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Type 304 stainless steel is the most versatile and widely used stainless steel. It is also known as 18/8 from the nominal composition of type 304 stainless steel being 18% chromium and 8% nickel. The most versatile and widely applied of the 300 series Stainless Steels. It has excellent forming and welding characteristics. AISI304 stainless steel can be deep drawn more severely than Types 301 and 302 without immediate heat softening, a characteristic that has made this grade dominant in the manufacture of drawn stainless steel parts such as sinks, splashbacks and saucepans. Type 304 stainless steel also has outstanding welding characteristics. Post-weld annealing is not required to restore the excellent performance of this grade in a wide range of mildly corrosive conditions. Type 304L stainless steel does not require post-weld annealing and finds extensive use in heavy gauge components where freedom from carbide weld precipitation is often required. All stainless stock can be delivered mirror polished if required.BS 970 1991AISI/SAEWerkstoff304S11304L1.4306304S153041.4301 304 Stainless Steel Products 304 Stainless Steel Bars 304 Stainless Steel Round bars: – Bright Drawn – Smooth Turned – Rough Turned 304 Stainless Steel Flat Bars: – Hot Rolled – Rolled Edge 304 Stainless Steel Square Bars 304 Stainless Steel Angle Bars 304 Stainless Steel TUBES & PIPES (Seamless and Welded) 304L Stainless Steel Seamless Pipe 304L Stainless Steel Seamless Tubing 304 Round tube: Welded Mirror Polished 304 Stainless Steel Square tube: – Welded unpolished – Welded Dull Polished 304 Stainless Steel Rectangular tubes: – welded dull polished – welded unpolished Stainless Steel Round Bars 304S31 (1.4301) Dia (mm)Weight per metre (kg)Dia (in)Weight per metre (kg)3mm0.061/8″0.064mm0.103/16″0.145mm0.161/4″0.256mm0.225/16″0.398mm0.403/8″0.5610mm0.627/16″0.7712mm0.891/21.0015mm1.409/16″1.2720mm2.485/8″1.5625mm3.8811/16″1.893/4″2.257/8″3.071″4.03 Stainless Steel Seamless Pipes  ASTM 304L (Also in 312)NPS/NB (inches)SCH 10SSCH 40SSCH 80S1/4–XX3/8XXX1/2XXX3/4–XX1XXX1 1/4–XX1 1/2XXX2XXX2 1/2XX–3XXX4XXX6XXX8–XX Rectangular 304 Stainless Steel Tubes welded dull polishedDimensions (mm)Wall (mm)Weight per metre (kg)Dimensions (mm)Wall (mm)Weight per metre (kg)20 x 101.500.4460 x 402.003.0830 x 101.200.7160 x 403.004.6530 x 101.500.9080 x 401.502.8030 x 151.500.7680 x 402.003.7130 x 201.501.1480 x 403.005.4940 x 151.501.2580 x 404.007.2240 x 201.201.1080 x 405.008.9440 x 201.501.3780 x 603.006.5340 x 202.001.84100 x 401.503.2950 x 251.201.41100 x 403.006.5350 x 251.501.75100 x 502.004.6850 x 252.002.31100 x 503.006.9550 x 253.003.75100 x 504.009.0950 x 301.501.85100 x 505.0011.3050 x 303.003.61100 x 603.007.5360 x 201.501.85120 x 603.008.1260 x 202.002.45120 x 803.009.5360 x 302.002.80150 x 1003.0011.7060 x 303.004.13150 x 1005.0018.8060 x 401.502.32 Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)

Super duplex stainless steel tubes mainly used in the waters of the environment, petrochemical industry, chemical fertilizer industry, oil refining industry, oil and gas industry, light industry and food industry, pulp and paper industry, energy and environmental protection industries. Material: UNS S32001, S31500, S32304, S31803 S32205, S32760, S32750 Tags: UNS S32001 duplex stainless steel pipe, S31500 duplex stainless steel pipe, S32304 duplex stainless steel pipe, S31803 duplex stainless steel pipe, S32205 duplex stainless steel pipe, S32760 duplex stainless steel pipe, S32750 duplex stainless steel pipe Main standard: GB/T 21832 austenite grain size-iron duplex stainless steel welded tube GB/T 21833 austenite grain size-iron seamless duplex stainless steel pipe ASTM A789 (ASME SA789) general purpose seamless and welding ferritic/austenitic stainless steel pipe ASTM A790 (ASME SA790) seamless and welding ferritic/austenitic stainless steel nominal pipe ASTM A928 stuffed electric welding metal ferrite/austenite (dual) stainless steel pipe standards Duplex Stainless Steel Applications Chemical processing, transport and storage, Oil and Gas exploration and processing equipment, Marine and other high chloride environments, Pulp and paper digesters, liquor tanks and paper machines. Duplex Stainless Steel Corrosion Resistance Excellent general corrosion resistance; superior to Grade 316 in most environments. Excellent resistance to localized corrosion including intergranular, pitting and crevice corrosion; the CPT of 2205 is generally at least 35ºC. The grade is also resistant to chloride stress corrosion cracking (SCC) at temperatures of up to about 150ºC. Grade 2205 will often perform well in environments which cause premature failure of austenitic grades. It has better resistance to sea water then Grade 316. Duplex Stainless Steel Heat Resistance Although 2205 has good high temperature oxidation resistance, this grade – like other duplex stainless steels – suffers from embrittlement if held for even short times at temperatures above 300ºC. If embrittled, this can only be rectified by a full solution annealing treatment. Duplex stainless steels are almost never used above 300ºC. Duplex Stainless Steel Heat Treatment Solution treatment (annealing) – heat to 1020ºC-1100ºC and cool rapidly. This grade cannot be hardened by thermal treatment, but does work harden. Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)

303 stainless steel is the most readily machineable of all the austenitic grades of stainless steel. 303 stainless steel owes its machineable nature to the presence of Sulphur in the composition. However, it should be noted that the Sulphur also decreases the corrosion resistance of the steel and slightly lowers its toughness. The toughness is still excellent as with other austenitic grades. AISI 304 stainless steel offer higher corrosion resistance than 303.BS 970 1991AISI/SAEWerkstoff303S313031.4305 303 Stainless Steel Products 303 stainless steel round bars – Bright Drawn – Smooth Turned – Bright Ground – Rough Turned 303 stainless steel flanges 303 stainless steel tubes & pipes – 303 stainless steel round pipe – 303 stainless steel tubes Stainless Steel Round bars 303S31 (1.4305) Bright DrawnDiaWeightDiaWeight(mm)per metre (kg)(in)per metre (kg)3mm0.061/8″0.064mm0.103/16″0.145mm0.161/4″0.256mm0.225/16″0.397mm0.303/8″0.568mm0.407/16″0.7710mm0.621/2″1.0012mm0.899/16″1.2214mm1.225/8″1.5615mm1.4011/16″1.8916mm1.593/4″2.2518mm2.017/8″3.0720mm2.481″4.0322mm3.0024mm3.5725mm3.88Stainless Steel Supplier – Steel Express Stainless Steel Round Bars 303S31 (1.4305) Smooth Turned/ *Bright GroundDiaWeightDiaWeight(mm)per metre (kg)(in)per metre (kg)25mm*3.881″4.0330mm*5.581 1/8 “5.0735mm7.601 1/4 “6.2540mm*9.931 3/8″7.5745mm12.561 1/2″9.0160mm22.301 5/8″10.6050mm*15.501 3/4″12.201 7/8″14.102″16.002 1/8″18.102 1/4″20.302 3/8″22.602 1/225.002 5/8″27.602 3/4″30.303″36.00 Stainless Steel Round Bars 303S31 (1.4305) Rough TurnedDiaWeightDiaWeight(in)per metre (kg)(in)per metre (kg)3 1/4″42.904 3/4″91.703 1/2″49.805″102.003 3/4″57.105′ 1/2123.004″65.006″146.004 1/4″73.407″199.004 1/282.30 Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)

302 austenitic stainless steel, which exhibits excellent hardness and is suitable for spring applications. In order to reduce costs, this stainless steel is directly delivered from an electric-arc air melted process. However, when drawing to fine wire, localized differences in chemistry can induce minimal changes in the final tensile strength. Table 1 shows the typical chemistry of different elements. The chemistry is for reference only, and must not be employed for specification purposes. Table 2 gives the physical properties of the 302 stainless steel, and Table 3 the mechanical properties. Table 1. Typical chemistry of different elements FWM Avg. Wt. %ASTM A313Carbon0.100.12Manganese1.112.00Silicon0.521.00Phosphorus0.0230.045Sulfur0.0020.030Chromium18.6017.0-19.0Nickel8.408.00-10.00Molybdenum0.32–Copper0.36–Nitrogen0.030.10IronBalanceBalanceCobalt0.16– Table 2. Physical properties of 302 stainless steel Density0.285 lbs/in3Modulus Of Elasticity28.0 psi x 106Electrical Resistivity720 µohms-mmThermal Conductivity16.3 W/mK (100°C) Table 3. Mechanical properties of 302 stainless steel%CWY.S.(psi)U.T.S.(psi)% Elongation (10″ gauge length)0%49,000106,00048%20%125,000147,0009.8%37%169,000189,0003.2%50%196,000220,0002.6%60%222,000244,0002.2%68%243,000273,0002.1%75%251,000289,0002.4%80%282,000309,0002.2%84%295,000327,0002.2%87%300,000332,0002.3%90%319,000345,0002.2%92%322,000371,0002.5% Thermal Treatment Cold worked 302 stainless steel in wire form will acquire tensile strength when they are stress relieved from 350°C to 427°C for a period of 4 to 6 h. Here, a reducing atmosphere is usually used, but inert gas can also be employed. The 302 stainless steel can be fully annealed at 1010-1121°C for a short period of time. However, the corrosion resistance of the stainless steel is significantly reduced due to carbide precipitation that occurs between 427°C and 899°C. Nonetheless, a test method has been described by the American Society for Testing Materials (ASTM) which ensures that the stainless steel is not damaged. Surface Condition Since stainless steels are drawn to fine diameters, they tend to develop a highly polished appearance. When single crystal natural diamond (SCND) dies are utilized to process stainless steels, the surface roughness can be below 5 RMS. Stainless steels with more than 0.040” diameters are finished by means of polycrystalline dies and tend to have a rougher surface than those processed with natural diamond dies. Similarly, stainless steels with more than 0.100″ diameters will exhibit an even rougher surface as they are drawn with carbide dies. Applications 302 stainless steel is like 304 stainless steel, apart from the 0.12% carbon maximum. The maximum percentage of carbon in 304stainless steel is 0.08%. In principle, all 304 stainless steels fulfill the requirements of 302 stainless steel, but not all 302 stainless steels meet 304 stainless steel chemistry. This means, despite the same amount of cold work, 302 is comparatively harder than 304. The end products of 302 stainless steels include stainless steel pipes, stainless steel flanges, stainless steel pipe fittings, stainless steel tubes. Conclusion wilsonpipeline offers high quality and high hardness 302 austenitic stainless steel specifically developed for spring applications. Except for the slight difference in carbon maximum, the 302 stainless steel shares the same properties as the 304 stainless steel and is widely used for making medical appliances. About wilsonpipeline Pipe Industry Co., Limited Established in 2008, wilsonpipeline Pipe Industry Co., Limited is a professional organizer and one-stop-shop supplier for steel piping system products, including stainless steel pipes and stainless steel tubes, forged stainless steel flanges and stainless steel pipe fittings, butt-welding stainless steel pipe fittings, stainless steel elbows, stainless steel tees, stainless steel reducer, stainless steel stub end, stainless steel gaskets, stainless steel fasteners, stainless steel valves, Sanitary Services etc. in China. We have devoted to providing the best solutions of steel materials and industrial equipment for our respected customers. Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)

316 Stainless Steel is used for food and surgical stainless steel. Also known as marine grade stainless steel due to its increased resistance to chloride corrosion compared to type 304 stainless steel. 316L Stainless Steel is an extra low carbon grade of 316, generally used in stainless steel watches. Its resistance to chloride attack means it is often selected for use in marine atmospheres. 316Ti stainless steel includes titanium for heat resistance, therefore it is used in flexible chimney liners. 316 stainless steel is a molybdenum-bearing grade. This addition gives the better overall corrosion resistance properties than type 304 stainless steel and higher creep strength at elevated temperatures. All stainless stock can be delivered mirror polished if required, Call for details.BS 970 1991AISI/SAEWerkstoff316S11316L1.4404316S13316L1.4435316S313161.4401316S333161.4436 316 Stainless Steel Products 316 Stainless Steel Bar 316 Stainless steel round bars: – Bright Drawn – Smooth Turned – Bright Ground – Rough Turned 316 Stainless Steel Hexagon bars. 316 Stainless Steel Flat bar: – Hot Rolled – Rolled Edge 316 Stainless Steel Square bars 316 Stainless Steel Angle bars 316 Stainess Steel Tubes & Pipes (seamless and welded) 316L Seamless Stainless Steel Pipes 316L Seamless Stainless Steel Tubes: – Metric – Imperial 316 Stainless Steel Round tubes – Welded Mirror Polished -Welded Dull polished 316 Handrail Section 316 Stainless Steel Rectangular tubes: – Welded Dull Polished – welded unpolished 316 Stainless Steel Square tubes: – Welded dull polished – Welded unpolished Type 316 Stainless Steel Round bars S11/S31 (1.4404)Dia (mm)Weight per metre (kg)Dia (in)Weight per metre (kg)3mm0.061/8″0.064mm0.103/16″0.145mm0.161/40.256mm0.235/16″0.398mm0.403/80.5710mm,0.637/16″0.7712mm0.901/21.0114mm1.239/16″1.2815mm1.415/8″1.5816mm1.6011/161.9118mm2.033/4″2.2720mm2.507/83.0924mm3.601″4.0325mm3.91 316L Seamless Stainless Steel Tubes (metric)O/DWallO/DWallO/DWall(mm)(mm)(mm)(mm)(mm)(mm)60.5141.5251.561.0142.0252.061.5151.0252.581.0151.5253.081.5152.0301.5101.0161.5302.0101.5162.0303.0102.0181.5383.0121.0201.5384.0121.5202.0122.0221.5 316L Seamless Stainless Steel Tubes ASTM A269O/DWallO/DWallO/DWall(in)(swg)(in)(swg)(in)(swg)1/8241/21/8 Inch1 1/4181/8225/8201 1/4161/8205/818181 1/4143/61245/8161 1/41/8 inch3/16225/8141 3/8163/16205/81/8 inch1 1/2163/16183/4201 1/2141/4223/4181 1/21/4 inch1/4203/4161 1/21/8 inch1/4183/4141 3/4161/4163/4121 3/41/8 inch5/16223/41/8 inch2165/16203/43/162145/16187/81821/8 inch5/16167/81621/4 inch3/8227/8142 1/4163/8207/81/8 inch2 1/4103/8161202 1/41/4 inch3/8141182 1/2163/81/8 Inch1162 1/21/8 inch7/16201142 1/21/4 inch1/2221123161/2201103141/21813/16 inch3101/21611/4 inch31/4 inch1/2141 1/81641/4 inch 316 Stainless Steel Round tubes Mirror PolishedO/DWallWeight perO/DWallWeight per(in)(mm)metre (kg)(in)(mm)metre (kg)1/21.500.421 1/23.002.645/81.200.4450mm2.502.995/81.500.5450mm3.003.553/41.200.5321.201.493/41.500.6621.501.857/81.200.6322.002.407/82.001.0123.007.4311.200.732 1/21.502.3411.500.9031.502.8112.001.1733.005.5211/41.501.1343.007.421 1/21.501.38 316 Stainless Steel Round tubes Welded Dull polishedO/DWallWeight per(in)(mm)metre (kg)1 1/23.002.7623.007.4333.005.5243.007.42 Established in 2008, wilsonpipeline Pipe Industry Co., Limited is a professional organizer and one-stop-shop supplier for steel piping system products, including stainless steel pipe and tube, forged flange and fittings, butt-welding pipe fittings, elbow, tee, reducer, stub end, gaskets, fasteners, valves, Sanitary Services etc. in China. We have devoted to providing the best solutions of steel materials and industrial equipment for our respected customers. Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)

Description: Heat-exchanger equipment, pipelines and pipeline components  Heat exchanger Tube are used in all types of process industries. We offer the market’s widest selection of stainless steel grades and has extensive experience of manufacturing heat exchanger tubes. OD: 15.88, 19.05, 25.4, 31.75, 38.1mm etc; WT: 1.24, 1.65, 2.11, 2.77, 3.05mm etc;  Main Testing Terms Accoring to ASTM A213 and ASTM A1016, EN 10216-5  1. High pressure hydraulic Test / Hydrostatic testing  2. Eddy current test, Ultrasonic Test 3. Mechanical Test, Physical properties test  4. OD , WT, Length tolerance Test. 5. PMI Test  Tubes End: The tubes are supplied plain, square cut and on request, the tubes will be deburred.  Application: Nuclear Industry Chemical Industry Petrochemical industry HVAC (Heating Ventilation Air Conditioning), refrigeration Food and Beverages Power Generation Heat exchanger Tube | Pipe and Tube Bender | U Tube heat exchanger | Stainless Steel U Tube | ASTM A556M | “U” Bent Cold Drawn Stainless Steel Tube | Bend Testing | Bend Tubing Happens | Bending Stainless SteelGrade(UNS):Austenitic Stainless Steel: 304/304L/304H(1.4301/1.4306/1.4948); 316/316L(1.4401/1.4404); 316Ti(1.4571);321(1.4541);309S (1.4833); 310S(1.4845); 317L(1.4438)321H(1.4878); 347H (1.4550); Duplex Stainless Steel: S32001, S32003, S31500, 2205(1.4462); S32304,(1.4362);S31803,2507 (S32750),S32760(1.4501);S32101(1.4162); Super Austenitic Stainless Steel: 904L, S30432, S31042, 6Mo (S31254, N08367)  Nickel Base Alloys: Alloy 20 (UNS N08020), Monel 200 (UNS 02200), Monel 400 (UNS N04400), Incoloy 800 (UNS N08800), Incoloy 800H (UNS N08810), Incoloy 800HT (UNS N08811), Incoloy 825 (UNS N08825),Inconel 600 (UNS N06600), 4J29, 4J36, GH3030, GH3039, C276 (UNS N10276) Martensitic Stainless Steel:410(1.4006), 410S(1.4000), 420(1.4021) Ferritic Stainless Steel:405(1.4002), 430(1.4016) Outside Diameter:6 – 830mmWall Thickness:0.50 – 60mmStandards (Norm):EN 10216-5; DIN 17456, DIN 17458, DIN 2462, DIN 17455GB/T14975; T14976; T13296; GB5310;ASTM A213, A269, A312, A511, A789, A790, A928, A999, A1016, ASTM B161, ASTM B163, ASTM B165, ASTM B167, ASTM B338, ASTM B407, ASTM B423, ASTM B444,ASTM B619, ASTM B622, ASTM B626, ASTM B668, ASTM B677, ASTM B829JIS G3459, JIS G3463, JIS G3446, JIS G3447, JIS G3448, JIS G3468GOST 9940;GOST 9941; Related References: U bend Stainless Steel Tube for Heat Exchanger Heat Exchanger Tube Specification/Standards for Heat Exchanger Tubes Finned Tube and Pipe Heat Exchangers Shell Tube and Pipe Heat Exchangers Select Materials for Heat Exchanger Tubes with Substantial Pressure difference The difference between Stainless Steel Tubing and Copper Tubing in Shell and Tube Heat Exchanger Difference in Counter and Parallel Flow Heat Exchanger Aluminum Corrosion Resistance for Cold Plates and Plate-Fin Heat Exchangers Flow arrangement Heat exchangers – Tubes and Pipes Standards Selecting a Heat Exchanger Cooling Liquid Selecting a Heat Exchanger Cooling Air Selecting A Cold Plate Technology Selecting a Cooling System: Ambient Cooling System | Recirculating Chiller | Liquid-to-Liquid Cooling System |Recirculating Chiller or Liquid-to-Liquid Cooling System Selecting A Cold Plate Technology Selecting A Pump Selecting a Recirculating Chiller Selecting A Modular Cooling System Selecting an Liquid-to-Liquid Cooling System How To Selecting a Heat Exchanger How to Boost the Efficiency of Heat Exchanger Comparison of Heat Exchanger Types Parallel and Counter Flow Design Direct contact heat exchanger Types of heat exchangers Shell and tube heat exchanger Plate Heat Exchanger – Efficiency and Flexibility U Tube heat exchanger  Regenerative heat exchanger Adiabatic wheel heat exchanger Plate fin heat exchanger Fluid heat exchangers Phase-change heat exchanger Parallel Flow Heat Exchanger Counter Flow Heat Exchanger Cross Flow Heat Exchanger Spiral heat exchangers Shell and Coil Heat Exchangers Brazed Heat Exchangers – Advantages | Applications | Specifications Titanium Heat Exchanger Plate and Shell Heat Exchanger – Applications | Specification Block Welded Heat Exchanger – Applications | Specification Construction Self cleaning Applications Selection Pre Heater Radiator Air Conditioner Evaporator and Condenser Large Steam System Condensers Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)

The Welding Neck Flanges (WN Flanges) is normally referred to as the high hub flange. It is designed to transfer stresses to the pipe, thereby reducing high stress concentrations at the base of the flange. The welding neck flange is the best designed butt-welded flange of those currently available becuase of its inherent structural value. It is expensive because of the design. Weld-Neck flanges or welding-neck flanges can be differentiated from all other types of flange by their long tapered hub. In addition, there is also a gentle transition of thickness in the region of the butt weld that joins them to pipe or a fitting. Weld-Neck flanges or welding-neck flanges are best suited for severe service conditions, whether loading conditions are substantially constant or fluctuate between wide limits. Weld Neck Flanges (WN Flanges) are flanges with the wall thickness of the flange having the same dimensions of the matching pipe, the lighter the pipe is, the larger the bore, conversely, the heavier the pipe, the smaller the bore, they are normally used for high pressure, cold or hot temperature. The various types of steel weld neck flanges (wn flanges): Weld Neck Flat Face Flanges Raised Face Weld Neck Flanges Long Neck Weld Flanges Standards, Dimensions & Weight ASME B16.5 Class 300 WN Flanges ASME B16.5 Class 600 WN Flanges ASME B16.47 B 605 C 600 WN Flanges ASME B16.47 B 605 C 900 WN Flanges BS 3293 Class 150 WN Flanges BS 3293 Class 300 WN Flanges BS 3293 Class 600 WN Flanges DIN 2631 PN 6 WN Flanges DIN 2632 PN 10 WN Flanges DIN 2633 PN 16 WN Flanges DIN 2634 PN 25 WN Flanges DIN 2635 PN40 WN Flanges ASME B16.5 Class 150 WN Flanges ASME B16.5 Class 900 WN Flanges ASME B16.5 Class 1500 WN Flanges ASME B16.5 Class 2500 WN Flanges ASME B16.47 A SP-44 C 150 WN Flanges ASME B16.47 A SP-44 C 300 WN Flanges ASME B16.47 A SP-44 C 600 WN Flanges ASME B16.47 A SP-44 C 900 WN Flanges ASME B16.47 B 605 C 75 WN Flanges ASME B16.47 B 605 C 150 WN Flanges ASME B16.47 B 605 C 300 WN Flanges Meterial & Standard for weld neck flanges (wn flanges): CARBON STEEL ASTM A 105, ASTM A 181 ALLOY STEEL ASTM A 182, GR F1, F11, F22, F5, F9, F91 Nickel Alloys Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy C22,C276 Copper Alloys Copper, Brass & Gunmetal Size 1/8″ NB TO 48″NB. Class 150#, 300#,400 #,600#,900#, 1500# & 2500 #. Standard ANSI ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48 DIN DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673 B.S BS4504 , BS4504, BS1560, BS10 Size: 1/2” to 60”, DN 12mm to DN 1500mm Pressure class: Class 150 to Class 2,500, PN 2.5 to PN 250 Facing: RF / RTJ Dimensional Tolerances of Weld Neck Flanges (WN Flanges) ASME B16.5 Dimensions are in millimeters unless otherwise indicated. OUTSIDE DIAMETER ≤ 24 = 1.6 mm > 24 = ± 3.2 mm INSIDE DIAMETER ≤ 10 = ± 0.8 mm ≥ 12 = + 1.6 mm / – 0 mm DIAMETER OF CONTACT FACE 1.6 mm Raised Face = ± 0.8 mm 6.35 mm Raised Face Tongue & Groove / Male-Female = ± 0.4 mm DRILLING Bolt Circle = 1.6 mm Bolt Hole Spacing = ± 0.8 mm Eccentricity of Bolt Circle with Respect to Facing ≤ 2½ = 0.8 mm max. ≥ 3 = 1.6 mm max. DIAMETER OF COUNTERBORE Same as for Inside Diameter OUTSIDE DIAMETER OF HUB ≤ 12 = + 2.4 mm / – 1.6 mm ≥ 14 = ± 3.2 mm THICKNESS ≤ 18 = + 3.2 mm / – 0 ≥ 20 = + 4.8 mm / – 0 LENGTH THRU HUB ≤ 18 = + 3.2 mm / – 0.8 mm ≥ 20 = + 4.8 mm / – 1.6 mm Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)

Threaded flanges (TH Flanges) look very similar to Slip-On flanges but the main difference is that the threaded flange has been was bored out to match a specific pipe inside diameter. The backside of this center opening is then threaded with the relevant-sized tapered pipe thread. Threaded Flanges (TH Flanges) are used for special circumstances with their main advantage being that they can be attached to the pipe without welding. Threaded flanges are threaded in the bore which match an external thread on the pipe. These threads are tapered in order to create a seal between the threaded flange and the pipe as the tapers approach the same diameter. Sometimes a seal weld is also used together with the threaded connection. This special type of flange is generally used for high pressure, yet smaller diameter applications. Obviously, the larger the flange is, the harder the ability to machine a thread would be. Threaded flanges are also not a good choice for a system that has a high level of torque. Specifications: Size: 1/2” to 60”, DN 12mm to DN 1500mm  Pressure class: Class 150 to Class 2,500, PN 2.5 to PN 250 Facing: RF / RTJ Dimensions are in millimeters unless otherwise indicated. OUTSIDE DIAMETER ≤ 24 = 1.6 mm > 24 = ± 3.2 mm INSIDE DIAMETER ≤ 10 = ± 0.8 mm ≥ 12 = + 1.6 mm / – 0 mm DIAMETER OF CONTACT FACE 1.6 mm Raised Face = ± 0.8 mm 6.35 mm Raised Face Tongue & Groove Male-Female = ± 0.4 mm DRILLING Bolt Circle = 1.6 mm Bolt Hole Spacing = ± 0.8 mm Eccentricity of Bolt Circle with Respect to Facing ≤ 2½ = 0.8 mm max. ≥ 3 = 1.6 mm max. DIAMETER OF COUNTERBORE Same as for Inside Diameter OUTSIDE DIAMETER OF HUB ≤ 12 = + 2.4 mm / – 1.6 mm ≥ 14 = ± 3.2 mm THICKNESS ≤ 18 = + 3.2 mm / – 0 ≥ 20 = + 4.8 mm / – 0 LENGTH THRU HUB ≤ 18 = + 3.2 mm / – 0.8 mm ≥ 20 = + 4.8 mm / – 1.6 mm These Threaded Flanges (TH Flanges) are available in the following range. Stainless Steel: ASTM A182 F304, F304L, F304H, F316, F316L, F316Ti, F310, F310S, F321, F321H, F317, F347, F347H, F904L.  Duplex Stainless Steel: UNS S31803, UNS S32750  Carbon Steel: ASTM A105,  Alloy Steel: ASTM A182 F1, F11, F22, F5, F9, F91  Nickel Alloys: Monel 400 & 500, Inconel 600 & 625, Incoloy 800, 825, Hastelloy C22, C276  Copper Alloys: Copper, Brass & Gunmetal  Size: 1/8″ NB TO 48″NB.  Class: 150#, 300#, 400#, 600#, 900#, 1500#, 2500#  Dimensional Standard ANSI: ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48  DIN: DIN 2527, DIN 2566, DIN 2573, DIN 2576, DIN 2641, DIN 2642, DIN 2655, DIN 2656, DIN 2627, DIN 2628, DIN 2629, DIN 2631, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2636, DIN 2637, DIN 2638, DIN 2673 B.S: BS 4504, BS4504, BS1560, BS10 Standards, Dimensions & Weight ASME/ANSI B16.5 Class 150 TH ASME/ANSI B16.5 Class 300 TH ASME/ANSI B16.5 Class 600 TH ASME/ANSI B16.5 Class 900 TH DIN 2565 PN6 DIN 2566 PN10 Uses of threaded flanges (TH Flanges) : Threaded flanges can be fitted to pipes of various sizes without welding and this is one chief benefit for which these flanges are highly demanded. They can be used in extremely high pressure applications, particularly at or near atmospheric temperature, where the necessary post weld heat treatment is not possible. They are ideal for small diameter piping applications. They are economical and time saving devices. These threaded flanges are normally designed for non-cyclic applications. The flanges are suitable to be used in applications where welding is hazardous. They can be used in highly explosive areas. The various types of threaded flanges (TH Flanges) are as follows: Plain Threaded Flanges Female Threaded Flanges Male Threaded FlangesSS Threaded FlangeCS Threaded FlangeAlloy Steel Threaded FlangeF5 Threaded FlangeF11 Threaded FlangeF22 Threaded FlangeF12 Threaded FlangeF91 Threaded FlangeSS 304 Threaded FlangeSS 304L Threaded FlangeSS 316 Threaded FlangeSS 316 L Threaded FlangeSS 317 Threaded FlangeSS 317L Threaded FlangeSS 321 Threaded FlangeSS 347H Threaded FlangeSS 904L Threaded FlangeDuplex Threaded FlangeSuper Duplex Threaded FlangeS31803 Threaded FlangeS32205 Threaded FlangeMonel 400 Threaded FlangeMonel K500 Threaded FlangeInconel Threaded FlangeDuplex Threaded FlangeSuper Duplex Threaded FlangeS32750 Threaded FlangeS32760 Threaded FlangeF51 Threaded FlangeF53 Threaded FlangeA694 F42 Threaded FlangeA694 F46 Threaded FlangeA694 F52 Threaded FlangeA694 F56 Threaded FlangeA694 F60 Threaded FlangeA694 F65 Threaded FlangeA694 F70 Threaded FlangeA350 LF2 Threaded FlangeA350 LF3 Threaded FlangeA707 L1 Threaded FlangeA707 L2 Threaded FlangeA707 L3 Threaded FlangeA105 Threaded FlangeF904L Threaded FlangeInconel 625 Threaded FlangeIncoloy 800 Threaded FlangeIncoloy 800H Threaded FlangeIncoloy 800HT Threaded FlangeHastelloy Threaded FlangeHastelloy B2 Threaded FlangesHastelloy B3 Threaded FlangeHastelloy C22 Threaded FlangeHastelloy C276 Threaded FlangeKOC approved Threaded FlangeKNPC approved Threaded FlangeAAramco approved Threaded Flange Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)

Nickel alloy tube is one of wilsonpipeline Stainless Steel specialties. The addition of nickel adds unique characteristics to those alloys in which it comprises a large percentage of the element makeup. Normally, nickel content is limited to 8-11% in most 300 series stainless steels, but in the alloys below it represents a much larger percentage of the components in each respective alloy. Each of the high nickel alloys described below has unique characteristics which should be considered prior to purchase. Tube Technology can form tubing in these alloys to sizes and tolerances within our manufacturable range. All of our nickel alloy tube is seamless and cold drawn/rolling to size, and finished in bright annealing. custom manufactured to your specifications, and can be manufactured in tube lengths up to 60’.Grade(UNS):Austenitic Stainless Steel: 304/304L/304H(1.4301/1.4306/1.4948); 316/316L(1.4401/1.4404); 316Ti(1.4571); 321(1.4541);309S (1.4833); 310S(1.4845); 317L(1.4438)321H(1.4878); 347H (1.4550); Duplex Stainless Steel: S32001, S32003, S31500, 2205(1.4462); S32304,(1.4362);S31803,2507 (S32750),S32760(1.4501);S32101(1.4162); Super Austenitic Stainless Steel: 904L, S30432, S31042, 6Mo (S31254, N08367)  Nickel Base Alloys: Alloy 20 (UNS N08020), Monel 200 (UNS 02200), Monel 400 (UNS N04400), Incoloy 800 (UNS N08800), Incoloy 800H (UNS N08810), Incoloy 800HT (UNS N08811), Incoloy 825 (UNS N08825),Inconel 600 (UNS N06600), 4J29, 4J36, GH3030, GH3039, C276 (UNS N10276) Martensitic Stainless Steel:410(1.4006), 410S(1.4000), 420(1.4021) Ferritic Stainless Steel:405(1.4002), 430(1.4016) Outside Diameter:6 – 830mmWall Thickness:0.50 – 60mmStandards(Norm):EN 10216-5; DIN 17456, DIN 17458, DIN 2462, DIN 17455GB/T14975; T14976; T13296; GB5310;ASTM A213, A269, A312, A511, A789, A790, A928, A999, A1016, ASTM B161, ASTM B163, ASTM B165, ASTM B167, ASTM B338, ASTM B407, ASTM B423, ASTM B444,ASTM B619, ASTM B622, ASTM B626, ASTM B668, ASTM B677, ASTM B829JIS G3459, JIS G3463, JIS G3446, JIS G3447, JIS G3448, JIS G3468GOST 9940;GOST 9941; Nickel Alloys Pipes and Tubes Nickel Base Alloy  Corrosion Resistance of Nickel Alloys  Nickel Effect In Stainless Steel 2.4066 | 2.4068 | 2.4360 | 2.4600 | 2.4602 | 2.4605 | 2.4610 | 2.4619 | 2.4633 | 2.4660 | 2.4816 | 2.4851 | 2.4856 | 2.4858 |2.4889  Chemical Composition of Hastelloy Hastelloy B | Hastelloy B-2 | Hastelloy C-4 | Hastelloy C-22 | Hastelloy C-276 | Hastelloy X | Hastelloy G  Incoloy 800H | Incoloy 800HT | Incoloy 825 | Incoloy 901 | Incoloy 925 | Incoloy 926  Inconel 600 | Inconel 601 | Inconel 625 | Inconel 718 | Inconel X-750 UNS Number N1 Nickel Alloys | UNS Number N2 Nickel Alloys | UNS Number N3 Nickel Alloys Selection of Stainless Steel and Nickel Alloys Use of stainless steel under high temperature condition refer table Corrosion Resistant Stainless Steel Tube Corrosion Resistance of Stainless Steel Tubes High Temperature Stainless Steel Tubes High Temperature Stainless Steel Tubes Heat resistant Stainless Steel Tubes Welded Stainless Steel Pipe  U-bend Stainless Steel Tubes  Steel Tube Pipe Classification Heat Exchanger Tubes Duplex Stainless Steel Tubes  Boiler Tubes, Condenser Tubes Stainless Steel Tube Fitting Corrugated Seamless Stainless Steel Pipe Tube DIN 2391 Seamless Precision Steel Tubes DIN2391 Seamless Pricision Steel Tube Tubing Tubes Non Acid-resisting Stainless Steel Tubes Bright Annealing Stainless Steel Tubes Hydraulic and instrumentation tube High Temperature-Tubes and Pipes Standards High Temperature Property Stainless Steel Heat Resistant Stainless Steels and Corrosion Resistant Stainless Steels-Valve Steels,Iron Baes Super alloys Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)

U Tube is Designed for high temperature applications, especially steam condensing or hot oil system. Thïs model is selected when differential expansion make fixed tube sheet exchanger unsuitable and when preclude floating head type HPF selection. – Design Pressure 12 bar(g) – Design Temperature -20°C to +250°C – Size range 80 thru 250dia, up to 6m long Features U-tube construction Units designed for liquid to liquid and steam to liquid applications. Available in 2 or 4 pass construction. Removable tube bundles for convenience in cleaning and inspection. Strong, durable construction with copper steel tubes and rugged cast-iron or steel head in standard units. (Optional materials are available). Coil and baffle arrangements designed to maximize heat transfer performance. Tubes expanded into stationary tubesheet allow for tube expansions and contractions, due to thermal fluctuations, without causing stresses on the joints. Welding tubes to the tubesheet is optional. Advantages The advantage of the shell and tube design cannot be ignored. Each unit comes with: connections that come in standardized sizes for easy assembly and feature additional thread and surface protection for clean installation U-bend tubes expanded into a tubesheet which allow for tube expansions and contractions due to thermal fluctuations. gaskets that are made of high quality compressed fibres which lends to reusability. a standard cast-iron or steel head for heavy duty services (also available as a spare part). saddle attaches which make for quick and easy mounting. punched baffles with minimal clearances between tubes guaranteeing correct fluid flow and minimized bypass a welded< shell protected with high quality paint for corrosion resistance. copper steel tubes which allow for strong, durable performance over a wide range of applications. Unique tube bundle layout (chevron corrugated pattern) minimizes deposit buildup at the edges and optimises media flow for high velocity flow turbulence. Applications Shell and tube heat exchanger are frequently selected for such applications as: Process liquid or gas cooling Process or refrigerant vapor or steam condensing Process liquid, steam or refrigerant evaporation Process heat removal and preheating of feed water Thermal energy conservation efforts, heat recovery Compressor, turbine and engine cooling, oil and jacket water Hydraulic and lube oil cooling Shell and tube heat exchangers have been around for over 150 years. Their thermal technology and manufacturing methods are well defined and applied by the modern manufacturer. Tube surfaces range from standard to exotic metals with plain or enhanced surface characteristics. They can help provide the least costly mechanical design for the flows, liquids and temperatures involved. Related References: Heat Exchanger U bend Stainless Steel Tube for Heat Exchanger Heat Exchanger Tube Specification/Standards for Heat Exchanger Tubes Finned Tube and Pipe Heat Exchangers Shell Tube and Pipe Heat Exchangers Select Materials for Heat Exchanger Tubes with Substantial Pressure difference The difference between Stainless Steel Tubing and Copper Tubing in Shell and Tube Heat Exchanger Difference in Counter and Parallel Flow Heat Exchanger Aluminum Corrosion Resistance for Cold Plates and Plate-Fin Heat Exchangers Flow arrangement Heat exchangers – Tubes and Pipes Standards Selecting a Heat Exchanger Cooling Liquid Selecting a Heat Exchanger Cooling Air Selecting A Cold Plate Technology Selecting a Cooling System: Ambient Cooling System | Recirculating Chiller | Liquid-to-Liquid Cooling System |Recirculating Chiller or Liquid-to-Liquid Cooling System Selecting A Cold Plate Technology Selecting A Pump Selecting a Recirculating Chiller Selecting A Modular Cooling System Selecting an Liquid-to-Liquid Cooling System How To Selecting a Heat Exchanger How to Boost the Efficiency of Heat Exchanger Comparison of Heat Exchanger Types Parallel and Counter Flow Design Direct contact heat exchanger Types of heat exchangers Shell and tube heat exchanger Plate Heat Exchanger – Efficiency and Flexibility U Tube heat exchanger  Regenerative heat exchanger Adiabatic wheel heat exchanger Plate fin heat exchanger Fluid heat exchangers Phase-change heat exchanger Parallel Flow Heat Exchanger Counter Flow Heat Exchanger Cross Flow Heat Exchanger Spiral heat exchangers Shell and Coil Heat Exchangers Brazed Heat Exchangers – Advantages | Applications | Specifications Titanium Heat Exchanger Plate and Shell Heat Exchanger – Applications | Specification Block Welded Heat Exchanger – Applications | Specification Construction Self cleaning Applications Selection Pre Heater Radiator Air Conditioner Evaporator and Condenser Large Steam System Condensers Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)

U bend tubes for heat exchanger can be supplied in accordance with the following norms and steel grades : U bend tubes in accordance with the standards detailed in table 1, part A can be requested. The bent area can be subject to stress relieving heat treatment by joule effect in inert atmosphere. Minimum radius treated = 28 mm. Maximum radius treated = 750 mm. 2. Dimensions and lengths Tubes with the following external diameters in mm can be bent a upon agreement: 15,8 – 16,0 – 17,0 – 18,0 – 19,05 – 20,0 – 21,3 – 25,4 -26,7 – 31,8 -38,1. The minimum feasible radius is : 1,5 x external diameter The maximum feasible radius is 1500 mm. 3. Tolerances Tolerances (diameter and wall thickness) according to ASTM A556 or given in the standards detailed in table 1 point A are respected. Bending tolerances. The tolerances stipulated in ASTM A556 are respected. Minimum wall thickness tolerances in the bent area conforming to the TEMA standard “Class R heat exchangers” can be requested or in accordance with specific requests. 4. Checks and test All the mechanical and technological tests stipulated in the cited standards are carried out. Leak tightness test: electromagnetic test (Eddy Current) is performed on straight tubes. Hydrostatic test on bent tubes is performed only if expressly requested, specifying the test pressure (option d). Additional tests and checks can be agreed upon. 5. Surface protection U bend tubes for exchangers are supplied unprotected or with a temporary external oil protection to prevent from rust if stored in a covered area. (Tenaris code : PT9). Other types of protection can be agreed upon. 6. Certification The product is supplied with a 3.1. certificate, in compliance with EN 10204 and ISO 10474 3.1.B. Certification according to 3.2 can be agreed upon at time of order. In the event that one of these certificates is requested, the customer must designate, at time of order, the inspection authority. 7. Identification and marking Tube identification is by indelible ink marking. The data determined by the product norms are continuously marked along the entire length of the tube. Data in addition to that of the product norms can also be marked on the tube, upon request. 8. Packaging Suitable packaging should be agreed upon before ordering.Such as Wooden cases, bundle or plastic bags, plywood boxes 9. Minimum quantity supplied To be agreed upon, at time of order, on the basis of dimensions and stainless steel grade. 10. U Bend requirements When U-Bends are formed, it is normal for the tube wall at the outer radius to thin, the minimum tube wall thickness in the bent portion before bending shall be: T0=T1[1+D0/4R] Where: T0= Original Wall thickness Inches (mm) T1= Minimum Wall thickness calculated by code rules for a straight tube subject to the same pressure and metal temperature, inches (mm) D0= Outside tube diameter, inches (mm) R= Mean radius of bend, inches (mm) More than one tube gage tubes, may be used in a tube bundle When U-bends are formed from tube material which are relatively non-work-hardening and of suitable temper, Tube wall thickness in the bend should not exceed a normal 17% of original tube wall thickness. Flattening at the bend tube shall not exceed 10% of the normal tube outside diameter. U-bends formed from tube material having low ductility, or materials which are susceptible to work hardening may require special consideration. 11 Bend Spacing 11.1.Center-To Center Dimension The center to center dimensions between parallel legs of U-tubes shall be such that they can be inserted into the baffle assembly without damage to the tubes 11.2.Bend Interference The assembly of bend shall be of workmanlike appearance .Metal-To-Metal contact between bends in the same  Plane shall not be permitted 12. Heat treatment Cold work in forming U-bends may induce embrittlement or susceptibility to stress corrosion in certain material and/or environments. Heat treatment to alleviate such conditions may be performed by agreement between manufacturer and purchaser. View our U bend Stainless Steel Tubes for Heat exchanger… Related References: 1. Heat exchanger Tube 2. Pipe and Tube Bender 3. U bend Tubes heat exchanger 4. U bend Stainless Steel Tubes 5. ASTM A556M 6. Cold Drawn U bend Stainless Steel Tubes 7. Bend Testing 8. Bend Tubing Happens 9. Bending Stainless Steel Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)

U Bend Stainless Steel Tubes are manufactured in our plant as per the customer requirements. Bends can be Heat Treated in accordance with Clients’ requirements followed by hydrostatic testing and dye penetrant testing if required. ​ U bend tubes are widely used in heat-exchanger systems. Heat exchanger equipment on the basis of stainless U-tube is essential in strategically important and critical fields nuclear and petrochemical machine building. U tubes heat exchangers Designed for high temperature applications, especially steam condensing or hot oil systems. Thïs model is selected when differential expansion makes a fixed tube sheet exchanger unsuitable and when conditions preclude a floating head type (HPF) selection. Surface condition Finished U-tubes shall be free of scale, without scratches after bending. Dimensional tolerances U tubes acc. to TEMA R.C.B. Length of straight part -0/+5 mm  Flattening (also called “ovality”) at the bend shall not exceed 10% of the nominal tube outside diameter. Wall thickness in bending part acc. to TEMA RCB 2.31 Minimum tube wall thickness in the bend part (T min)T(min) ≥ (SW × (2×R + D))/( 2× (R+D)where:  SW is smallest wall thickness D Nominal outside diameter R radius Radius tolerance 1) for R 100 mm +/- 3 mm 2) for R ≥ 100 mm +/- 5 mm Straightness tolerance max. 1,5 mm per 1 m U-Tubes ends: plain, vertically cut to the tube axis Tube-bending line, installed at 2007, will allow to produce U-tubes as per such standards: 1. ASTM A688/A688M-08 2. ASTM A803/A803M 3. ASTM A556/A556M, ASME SA556 4. ASME SA-688 Initial Length Maximum lengths of 27000mm can be supplied on request Dimensions Tubes OD in mm can be bent upon agreement: 15,8 – 16,0 – 17,0 – 18,0 – 19,05 – 20,0 – 21,3 – 25,4 -26,7 – 31,8 -38,1 Bending radius Minimum: 1.5×OD Maximum: 1500 mm Heat treatment of the bend U bend tubes with a bending radius up to maximum of 1500mm can be heat treated on request The basic Testing and processing: 1. High Pressure Hydrostatic Test:Minimum:10 Mpa-25Mpa. 2. Air Under Water Test After Bending 3. U Tubes Wall Thickness Test 4. Eddy Current Test before U bend Formed  5. Ultrasonic Test before U bend Formed 6. Heat treatment to stress relieved  7. Ball passing test The below sizes are those most frequently used,other sizes can be produced upon request. The dimensions for heat exchanger tubes in special grades may differ from the above,please contact us: sales@wilsonpipeline.com .Grade(UNS):Austenitic Stainless Steel: 304/304L/304H(1.4301/1.4306/1.4948); 316/316L(1.4401/1.4404); 316Ti(1.4571); 321(1.4541);309S (1.4833); 310S(1.4845); 317L(1.4438)321H(1.4878); 347H (1.4550); Duplex Stainless Steel: S32001, S32003, S31500, 2205(1.4462); S32304,(1.4362);S31803,2507 (S32750),S32760(1.4501);S32101(1.4162); Super Austenitic Stainless Steel: 904L, S30432, S31042, 6Mo (S31254, N08367)  Nickel Base Alloys: Alloy 20 (UNS N08020), Monel 200 (UNS 02200), Monel 400 (UNS N04400), Incoloy 800 (UNS N08800), Incoloy 800H (UNS N08810), Incoloy 800HT (UNS N08811), Incoloy 825 (UNS N08825),Inconel 600 (UNS N06600), 4J29, 4J36, GH3030, GH3039, C276 (UNS N10276) Martensitic Stainless Steel:410(1.4006), 410S(1.4000), 420(1.4021) Ferritic Stainless Steel:405(1.4002), 430(1.4016) Outside Diameter:6 – 830mmWall Thickness:0.50 – 60mmStandards(Norm):EN 10216-5; DIN 17456, DIN 17458, DIN 2462, DIN 17455GB/T14975; T14976; T13296; GB5310;ASTM A213, A269, A312, A511, A789, A790, A928, A999, A1016, ASTM B161, ASTM B163, ASTM B165, ASTM B167, ASTM B338, ASTM B407, ASTM B423, ASTM B444,ASTM B619, ASTM B622, ASTM B626, ASTM B668, ASTM B677, ASTM B829JIS G3459, JIS G3463, JIS G3446, JIS G3447, JIS G3448, JIS G3468GOST 9940;GOST 9941; Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)