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Product name: threaded 90º elbow ATERIAL: A234-WPB.A420-WPL6.A234-WP12.A234-WP11.A234-WP5.A403-WP304.A403-WP304L.A403-WP316.A403-WP316L. SIZE: 1/8″-4″、DN6-DN100 PRESSURE GRADE: 2000LB、3000LB、6000LB、Sch40、Sch80、Sch160 STANDARDS: ISO, ANSI. JIS. DIN USE: Petroleum, chemical, power, gas, metallurgy, shipbuilding, etc. Nominal pipe size DN Center to End Outside Diameter D Wall Thickness Length of Thread(min) A D Cmin 90°Elbows 45°Elbows A B(in)2000LB3000LB6000LB2000LB3000LB6000LB2000LB3000LB6000LB2000LB3000LB6000LB NPT RcSch80Sch160XXSSch80Sch160XXSSch80Sch160XXSSch80Sch160XXS 6 1/8 21 21 25 17 17 19 22 22 25 3.0 3.0 6.5 6.5 6.581/42125291719222225333.03.56.58.010.0103/82529331922252533383.03.57.09.010.5151/22933382225293338463.04.08.011.013.5203/43338442529333846563.04.58.512.514.02513844512933354656623.55.010.014.517.53211/44451603335435662754.05.510.017.018.04011/25160643543446275844.05.511.018.018.550260648343455275841024.57.012.019.019.06521/2768395525264921021215.57.515.523.529.080386961066464791101211466.09.016.526.030.0 100 4 106 114 114 79 79 79 146 152 152 6.5 11.0 18.5 27.5 33.0

In the pipeline system, stainless steel elbow is change the direction of the line pipe fittings. Points, stainless steel elbow classification: according to the Angle 45 ° and 90 ° 180 ° three most commonly used, according to the requirements of the project also included Angle 60 °, and other abnormal stainless steel elbow. The material of the stainless steel elbow, stainless steel, alloy steel, cast iron can be calcined cast iron, carbon steel, etc. With the pipe connection way: direct welding (the most common way) flange connection, threaded coupling has socket type coupling, etc. According to the production process can be pided into: stamping welding of stainless steel elbow, stainless steel elbow, cast stainless steel elbow, etc. A connection is commonly used in pipe installation with fitting, used for the connection outside the pipe bend. Purpose: two of the same or different nominal diameter tubes, special steel flange made line turn Angle. 1 to material is pided into: carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum, etc. (but small wood factory is pure forgings) 2 to the producing method piding can be pided into: pushing, pressing, forging, casting, etc. (now are generally pure forging) 3 to create standard classified can be pided into: gb, electricity standard, water standard, American standard, Germany standard, Japanese standard, etc. 4 according to its radius of curvature points: can be pided into stainless steel elbow long radius and short radius stainless steel elbow. Stainless steel long radius elbow refers to its radius of curvature is equal to 1.5 times the outer diameter of tube, R = 1.5 D. Stainless steel elbow refers to its short radius of curvature radius equal to the pipe diameter, R = 1.0 D. Stainless steel bend diameter (D, R for the radius of curvature). 5 if according to the grades of pressure points: about seventeen kinds, and American standard pipe is the same, there are: Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS; Sch80, SCH100, Sch120, Sch140, Sch160, XXS; One of the most common is two kinds of STD and XS. Technical requirements: 1. Because most is used for welding pipe fittings, in order to improve the welding quality, end car into groove, leave a certain Angle, with a certain edge, this one is more strict, how thick, Angle deviation range for how much and there are rules. The surface quality and mechanical properties of the basic and the pipe is the same. In order to convenient welding, pipe fittings and connected pipe steel grade is the same. 2 is all the fittings are after surface treatment, the internal and external surface of iron oxide by shot blast spray drop, then coated with anticorrosive paint. This is to export demand, moreover, to prevent corrosion in domestic is for the convenience of transportation, have to do this work. 3 is the requirement for the packaging for small pipe fittings, such as export, you need to do the wooden case, about 1 cubic meters, the specified number of stainless steel elbow in the box about no more than a ton, the standard allows suit, namely large sets of small, but the total weight not more than 1 ton. For big y is a single package, like 24 “must be a single package. Another is the packing mark, mark is to indicate the size, steel grade, batch number, trademarks, etc.

Tapping the stainless steel slip-on flange, tapping oil selection is also very important. In order to prolong the service life of the screw tap, the progress of thread machining quality, should pay attention to the following points. Using special stainless steel tapping oil good effect, and can be used directly. In addition, also can use tapping oil and oil self configuration, but the ratio must be appropriate. Such as the lubrication effect of tapping oil is not good, the difference is tapping thread finish, and tap tapping resistance. Tapping oil must have good cooling, lubricating and rust proof function. As the cooling effect of tapping oil is not good, then tap easily stick teeth, namely the thread and the angle of surface bonding of stainless steel swarf. Stainless steel flat welding flange application: piping system for oil and gas, chemical industry, hydropower, construction and boiler etc.. Slip-on flange forming basic process: according to the need, a circular ring shells can be cut into four 90 101 elbow or six 60 101 elbow or other specifications of the elbow and the technology application in manufacturing bend diameter and bend diameter ratio greater than 1.5 any specification of large elbow, is currently making the ideal method of large pressure elbow. Slip-on flange less rigid, and is suitable for occasions of pressure P is less than or equal to 4 MPa; butt welded flange also known as high neck flange, rigidity, suitable for high pressure temperature of the occasion.

A threaded street elbow is a type of pipe elbow having an internal thread at one end and an external thread at the other. In other words, it is a type of plumbing or piping fitting which is intended to join a piece of pipe and another fitting at an angle. Materials used: Copper Iron Cast iron Plastic Brass Nickel Aluminum Bronze Stainless Steel etc. Applications of street elbow: Street elbows are used in: Water supply Drainage Sewer vents Central vacuum systems Compressed air and gas lines HVAC Sump pump drains, and Other plumbing fittings Dimensions Threaded Street Elbow – ASME B16.11 Dimensions – NPS 1/2 to 4 – Class 3000 NPSCenter to Female EndCenter to Male EndOutside Dia of BandMin WTMin WTACDG1G21/22841384.094.163/43548444.324.8814457514.985.561¼5166625.285.561½5471705.566.2526484847.147.64NPSACDG1G2Center to Female EndCenter to Male EndOutside Dia of BandMin WTMin WTNPSMin Length Internal ThreadMin Length Male ThreadBJ1J21/210.913.6143/412.713.916114.717.3191¼1718211½17.818.42121919.222NPSBJ1J2Min Length Internal ThreadMin Length Male Thread

What is threaded tee Threaded tees are mainly used to either combine or split a fluid flow. It is a type of pipe fitting which is T-shaped having two outlets, at 90° to the connection to the main line. It is a short piece of pipe with a lateral outlet. A tee is used for connecting pipes of different diameters or for changing the direction of pipe runs. They are made of various materials and available in various sizes and finishes. They are extensively used in pipeline networks to transport two-phase fluid mixtures. Threaded piping is commonly used in low-cost, noncritical applications such as domestic water, fire protection, and industrial cooling water systems. Threaded tees are normally made of cast gray or malleable iron, cast brass or bronze, or forged alloy and carbon steel. Dimensions Threaded Tee – ASME B16.11 Dimensions – NPS 1/2 to 4 – Class 2000NPSMin Length of ThreadOutside Dia of Band DCenter to End AMin WTBJ1/210.913.633283.183/412.713.938333.18114.717.346383.681¼171856443.891½17.818.462514.0121919.275604.272½23.628.992765.61325.930.5109865.99427.7331461066.55NPSBJOutside Dia of Band DCenter to End AMin WT

What is threaded full coupling? A threaded full coupling which means a steel pipe coupling has two ends both threaded. It could be a coupling with the thread only on the two ends, also could be a coupling with thread all over the length, they are all called full pipe coupling. Sometimes the two ends thread may be different, one end is BSP and another end is NPT, then it is like a adaptor for pipes which have different type of thread ends. When installing it, the workers should check the direction for correct match . Standard: ASME / ANSI B16.11 Class: 3000 LBS, 6000 LBS, 9000 LBS Material: Available in a complete range of Carbon Steels, Stainless Steels, Alloy Steels and Non-ferrous metals certified to ASTM, ASME Standard. Sizes: 1/8”- 12” in Class 3000 and 1/8”- 8”in Class 6000 Also available in 1/8 – 8” in 150 # and 1/8”- 4” in Class 9000 and in special lengths Threads: American National Standard Taper Pipe Threads NPT (ANSI/ASME B1.20.1-1983) Also available in other thread forms: NPTF, NPSC, BSPT, BSPP and in any combination. Left hand threads available upon request. FORGED FITTINGS THREADED FULL COUPLING MATERIAL & GRADES : Stainless Steel Threaded Full Coupling : ASTM A182 F304, F304L, F306, F316L, F304H, F309S, F309H, F310S, F310H, F316TI, F316H, F316LN, F317, F317L, F321, F321H, F11, F22, F91, F347, F347H, F904L, ASTM A312/A403 TP304, TP304L, TP316, TP316L Carbon Steel Threaded Full Coupling : ASTM A105, A350 LF2, A106 Gr.B, A234 WPB Alloy Steel Threaded Full Coupling : ASTM / ASME A182, ASTM / ASME A335 GR P 1, P 5, P 9, P 11, P 12, P 22, P 23, P 91, ASTM / ASME A691 GR 1 CR, 1 1/4 CR, 2 1/4 CR, 5 CR, 9CR, 91 Duplex Steel Threaded Full Coupling : ASTM/ASME A182 / SA182, A790 / SA790 UNS No S31803, S32205 Super Duplex Threaded Full Coupling : ASTM/ASME A182 / SA182, A790 / SA790 UNS No S32750, S32950 Nickel Alloy Threaded Full Coupling : ASTM B336, ASME SB336, Nickel 200 (UNS No. No2200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020), Titanium (Grade I & II), Copper Nickel (Cupro-Nickel 90/10 & 70/30). Low Temperature Carbon Steel Threaded Full Coupling : ASTM/ASME A420 SA/420 WPL3, WPL6 DIMENSIONS OF ASME B16.11 THREADED FULL COUPLING Dimensions threaded Full couplings – NPS 1/2 to 4 – 3000 LBS – ASME B16.11NPSEnd to EndOutside DiameterMinimum Length of ThreadADBJ1/2482810.913.63/4513512.713.91604414.717.31¼675717181½796417.818.4286761919.22½929223.628.9310810825.930.5412114027.733

The position of the line of stainless steel pipe fitting shall meet the following requirements; Work) straight pipe spacing should be greater than 200 mm ring: 2) easy to check the parts of the pipe should be located in the longitudinal seam welded steel pipe; two longitudinal joints should be staggered butt; 3) stainless steel pipe fitting girth butt joint and the pipe frame distance should be greater than 100 mm, and the wall and the Board shall remain in the: 4) in the longitudinal and circumferential weld of stainless steel pipe fitting is not allowed on the hole and welding accessories. Detachable piping installation, from one end to the other end in welding. Can also be segmented welding, we must also pay attention to minimize the deviation of stainless steel pipe fitting, fixed welding interface. In the pipeline not detachable for ease of assembly, in certain parts of the appropriate leave a few detachable short (sometimes is to install the valve parts) can facilitate the pipeline of the group of cleaning and inspection. No matter is dismountable and removable installation of pipelines, in the interface to the group prevailed, can not take compulsory assembly, otherwise it will make weld and non-standard flange connection uneven stress and damage. The whole pipeline laying, should reach a certain angle according to the design requirements, in order to condensate drain. If the construction plans no regulation in general 2 / 1000 slope. The pipeline wall, floor and roof should be added when the casing, with waterproof shoulder, waterproof cap device. Welds, non – standard flanges and so on should avoid the wall and the floor. Trench in the pipeline due to construction inconvenience, should be pre assembled in place, if necessary, it can be cleaned up, try to be in place after passing the test, so as not to deal with the difficulties of leakage. The installation should pay attention to prevent the formation of air pocket and stainless steel pipe fitting. For example, the pump inlet pipe to form air bag, not exhaust pipe gas imports, it will affect the normal work of the pump.

What is threaded cross Threaded cross is a kind of industrial pipe fitting and its main function is to shunt medium. The specifications of DIN stainless steel internal threaded cross are: 1. Materials: Stainless steel 201, 301, 304 etc. 2. Standard: ANSI, JIS, GB, GOST, BS 3. Norm: 1/4″ – 4″(DN8-DN100) 4. Nominal pressure: 50LB 5. Application medium: Water, oil, gas and some corrosive liquid 6. Threaded type: NPT BSPT BSP DIN259/2999 7. Working temperature: -20~160 degree~180 degree 8. Usage: Chemical industry, petroleum gas etc any kind pipeline and fluid equipment. DIN stainless steel internal threaded cross is produced by numerical control lathes; It has internal advanced manufacturing technique. All products are standard and have reliable quality. Please don’t hesitate to contact us if you have interest in our products. 1/4″ to 4″ class 2000 threaded, 1/8″ to 4″ class 3000 threaded, 1/8″ to 4 ” class 6000 threadedClass 2000 1/81/43/81/23/411 1/41 1/222 1/234A–7/831/321 1/81 5/161 1/21 3/422 3/833 3/84 3/16B–29/321 1/161 5/161 9/161 27/322 7/322 1/23 1/323 11/164 5/165 3/4 Class 3000 1/81/43/81/23/411 1/41 1/222 1/234A7/831/321 1/81 5/161 1/21 3/422 3/82 1/23 1/43 3/44 1/2B29/321 1/161 5/161 9/161 27/322 7/322 1/23 1/323 11/3244 3/46 Class 6000 1/81/43/81/23/411 1/41 1/222 1/234A31/321 1/81 5/161 1/21 3/422 3/82 1/23 1/43 3/44 3/164 1/2B1 1/61 5/161 9/161 27/322 7/322 1/23 1/323 11/3244 3/45 3/46

The welding of stainless steel pipe fittings is a strong technical work. Only absolutely guarantee the quality of weld to ensure the safety of use. For welding of stainless steel pipe work to strictly comply with the requirements stipulated in the specification. Of stainless steel pipe welding should take the following several parts: joint, group, welding rod, welding process, welding technology, welding inspection, etc. Welding interface, should according to the stainless steel pipe wall thickness to choose the appropriate joint type. On the machine or by hand file method processing good pipe groove. Group of welded joint, the gap between the pipe end can be according to the requirements given in table 5-3, the stainless steel tube joint hi-lo shall meet the following requirements: Wall thickness 15 mm or less, hi-lo 0.5 mm or less; Wall thickness > 15 mm, hi-lo 1 mm or less. Axis for the two tube group, should be in a straight line, the deviation should not be more than 1/1000. Joint group special fixture can be used for fashion fixed location, after waiting for spot welding to dismantle the fixed frame. Before welding, the groove and around 10 ~ 20 mm stainless steel pipe surface should be clean up dirt, soil, and rusty spot and moisture. To ensure welding quality, welding, shall check and make sure there are no cracks in the spot welding, such as a crack should be eliminated, while in the butt end grinding wheel grinding into a gentle slope. Each welding in the process of stainless steel pipe welding line shall be examined for cracks, uneven place inside the lap welding electrode and welding are used grinding wheel grinding into a gentle slope after welding. Process of welding all conditional should make joint rotating flat, so that we can ensure the weld quality. The selection of electrode and welding technology is good or bad, directly affect the quality of weld.

What is threaded half coupling? A threaded half coupling means a steel coupling which only has one thread end, another end of the coupling should be butt welding end. The thread end could be NPT or BSP standard thread. The butt welding end could be a plain end or a bevel end. it could be the connection between a pipe of male thread end and a pipe of no thread end. When installing this coupling in site, the ends should be in correct direction. Standard: ASME B16.11 ,Class3000/Class600, BS EN10241 Material: Available in a complete range of Carbon Steels, Stainless Steels, Alloy Steels and Non-ferrous metals certified to ASTM, ASME, and Military standards. Sizes: 1/8”- 12” in Class 3000 and 1/8”- 8”in Class 6000 Also available in 1/8 – 8” in 150 # and 1/8”- 4” in Class 9000 and in special lengths Threads: American National Standard Taper Pipe Threads NPT (ANSI/ASME B1.20.1-1983) Also available in other thread forms: NPTF, NPSC, BSPT, BSPP and in any combination. Left hand threads available upon request. MATERIALS:  Stainless Steel Threaded Half Coupling – SS Threaded Half Coupling  ASTM A182 F304, 304H, 309, 310, 316, 316L, 317L, 321, 347, 904L Duplex Stainless Steel Threaded Half Coupling – Duplex SS Threaded Half Coupling ASTM / ASME A/SA 182 UNS F 44, F 45, F51, F 53, F 55, F 60, F 61. Carbon Steel Threaded Half Coupling – CS Threaded Half Coupling ASTMA 105/A694/ Gr. F42/46/52/56/60/65/70 Low Temperature Carbon Steel Threaded Half Coupling  – LTCS Threaded Half Coupling A350 LF3/A350 LF2 Alloy Steel Threaded Half Coupling – AS Threaded Half Coupling ASTM / ASME A/SA 182  F1/F5/F9/F11/F22/F91 Nickel Alloy Threaded Half Coupling  : Standard: ASTM / ASME SB 564 / 160 / 472. UNS 10276 (HASTELLOY C 276 Forged Elbow) UNS 2200 (NICKEL 200 Forged Elbow ),  UNS 2201 (NICKEL 201 Forged Elbow ),  UNS 4400 (MONEL 400 Forged Elbow ),  UNS 8020 (ALLOY 20 Forged Elbow ) UNS 8825 INCONEL 825 Forged Elbow ),  UNS 6600 (INCONEL 600 Forged Elbow ),  UNS 6601 (INCONEL 601 Forged Elbow),  UNS 6625 (INCONEL 625 Forged Elbow), Copper Alloy Threaded Half Coupling ASTM / ASME SB 61 / 62 / 151 / 152. C 70600 (CU -NI- 90/10) – Cupro Nickel Forged Elbow  C 71500 (CU -NI- 70/30) – Copper Nickel Forged Elbow  UNS NO. C 92200, UNS NO. C 83600, UNS NO.  UNS NO C 10100, C 10200, C 10300, C 10800, C 12000, C 12200 DIMENSIONS OF ASME B16.11 THREADED HALF COUPLING Dimensions threaded Half couplings – NPS 1/2 to 4 – 3000 LBS – ASME B16.11NPS End to EndOutside DiameterMinimum Length of ThreadADBJ1/2482810.913.63/4513512.713.91604414.717.31¼675717181½796417.818.4286761919.22½929223.628.9310810825.930.5412114027.733 Dimensions threaded Half couplings – NPS 1/2 to 4 – 6000 LBS – ASME B16.11 NPS End to EndOutside DiameterMinimum Length of ThreadADBJ1/2483810.913.63/4514412.713.91605714.717.31¼676417181½797617.818.4286921919.22½9210823.628.9310812725.930.5412115927.733

1, “What is the basic difference between coupling and unions?” Both of these fittings are normally only found or used in 2″ (DN50) and smaller screwed or socket-weld piping. The basic difference between a coupling and a union is that a coupling is for joining pipe to pipe or pipe to a swedge. A union is made for joining and disassemble of a part of a piping system (a steam trap or control valve, etc) for maintenance or replacement. 2, “What are the advantages of ones over others?” The union is a higher cost item than the coupling. When you are just joining pipe you would want to use the lowest cost item. When you need the ability to disassemble the piping for removal of an item then you must use the higher cost union. 3, “Where we use coupling and where we use unions ?” Use couplings to join pipe in pipe racks. Use unions at steam trap or control valve manifolds for removal of items for repair. 4, “Is there any guidelines or code that specifies where should we use what?” The use of couplings or unions is not a code issue.

General stainless steel pipe fittings assembly mode can be pided into roughly two categories: one kind is detachable, non-standard flange, thread and packing methods of connection. Another kind is not detachable type, important is connected by welding method. These two kinds of assembly way have different requirements in the installation. Detachable when assembling, stainless steel pipe fittings according to the first position is pided into several section of the assembly. This can be done on the ground, also can be set to on installation location. Then from one end of the stainless steel pipe to the other end fixed interface of successive combination; Can also be from line 2 end interface to the middle of successive groups. But in the group of process, must check the deviation of the center line of the pipeline, to avoid due to deviation of finally closed joints hi-lo is too big. But although very attention, the final interface of a small amount of deviation is always free, so generally available to the last paragraph tube site configuration. If it is casting stainless steel pipe fittings with oblique pad and sub can be depended on to correct. Not detachable type pipe assembly, each joint should be according to the request processing groove, can indoors in advance the field compound welding joint should be indoors. The scene in the compound as steep reducing welding fixed to ensure the quality of joint. Welding construction site shall ensure that are not affected by the wind, rain, snow directly influence of ambient temperature shall be not less than allowed range. To preheat the stainless steel tube joint according to provisions of preheating, stainless steel pipe fittings for common welding environment and preheating requirements. Weld quality requirements, according to the different level of stainless steel pipe fittings. General requirements of weld shall be no cracks, porosity, slag inclusion. The depth of the bit of meat shall not exceed 10% of the pipe wall thickness, maximum less than 1 mm, and the nondestructive flaw detection for weld internal quality, and the towns.