Search Results

What is a Olet? Branch Connection fittings (also known as Olets) are fittings which provide an outlet from a larger pipe to a smaller one (or one of the same size). The main pipe onto which the branch connection is welded is usually called the Run or Header size. The pipe to which the branch connection provides a channel is usually called the Branch or Outlet size. Branch connections are in all sizes, types, bores, and classes, in a wide range of stainless steel, chrome-moly, and other alloys.

Pn on behalf of the nominal pressure, is steel elbow product under the reference temperature said crushing strength, is the production of steel pipe and accessories of the strength of the standard. Such as nominal pressure for 2. SMPa, can remember for PN2. 5 mpa. Due to butt weld bend material is different, the reference temperature is different also, cast iron and copper base temperature is 120 ℃, the steel base temperature is 200 ℃, the alloy steel reference temperature is 250 ℃. Products under the reference temperature close to room temperature compressive strength, compression strength of materials so the nominal pressure is close to room temperature compressive strength. Ps test pressure is to test steel bend and accessories mechanical strength at room temperature and the pressures of strict performance standards. Butt welding steel elbow and steel pipe accessories before they go out, must carry out pressure test, check the strength and sealing, and products for strength test pressure is called the strength test, ps said with symbols, such as the test pressure of 4 mpa, remember to ps4MPa. From a security perspective, the test pressure must be greater than the nominal pressure, testing pressure is generally 1.5 ~ 2 times of the nominal pressure. Pt said work pressure refers to the working pressure of the steel pipe inner flow medium.  Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)

What is a flexolet? Flexolet reduces the number of fitting sizes per outlet made possible by the revisions to the MSS specification. Flexolet is used widely abroad in recent years, It is used to connect the reinforced fittings. It takes place of traditional connecting ways. The body of Flexolet Threaded is made in excellent Forgings. Type of OletsflexoletSize 1/8″ (6 NB) to 20″ (500NB)StandardMSS SP-97Class  3000LB（SCH40，SCH80，STD，XS） 6000LB（SCH160，XXS） MaterialGradeCarbon Steel ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F70 Stainless SteelASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L Alloy Steel  ASTM / ASME A/SA 182 F12, A182 F11, A182 F22, A182 F5, A350 LF2, A350 LF3 What is the difference between weldolet and flexolet? All Weldolets are Flexolets but not all Flexolets are Weldolets in the same way that all dogs are animals but not all animals are dogs. The Flexolet and the Weldolet products are our two branch connection designs. They perform the same function, which is that they reinforce the strength lost when a hole is cut into the header pipe and they connect the header pipe to the branch pipe. The difference in designs is that the Weldolet® has a tapered bore while the Flexolet has a straight-through bore. See below: The tapered bore provides a better transition (reduces the flow resistance) and it also provides a lower stress intensification factor, which results in less stress on the welds and longer fatigue life. The straight-through bore decreases the diameter of the part and allows for larger run-size consolidations (meaning you can use them on a wider range of header pipe diameters). Because of the smaller size of the straight-through bore, the Flexolet tends to be less expensive as compared to the Weldolet.

What is a Brazolet ? Brazolet is designed for use with KLM and IPS brass or copper tubing. Available with socket or threaded connections. MaterialGradeCarbon Steel ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F70 Stainless SteelASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L Alloy Steel  ASTM / ASME A/SA 182 F12, A182 F11, A182 F22, A182 F5, A350 LF2, A350 LF3 Brazolet

What is a Coupolet? A coupolet is designed for use in fire protection sprinkler systems and other low pressure piping applications. manufactured with NPT female threads for 300# service and are UL Listed and F.M. approved. MaterialGradeCarbon Steel ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F70 Stainless SteelASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L Alloy Steel  ASTM / ASME A/SA 182 F12, A182 F11, A182 F22, A182 F5, A350 LF2, A350 LF3 Coupolet

What is a Nipple outlet (Nipolet)? Nipple outlet (Nipolet) have been developped especially for assemby without assistance. Nipple outlet (Nipolet) is available with varying ends. Plain or bevelled ends are used for weld connections while the ends for screw connections have an external thread. Standards and special requests Nipple outlet (Nipolet) can be ordered in a variety of wall thickness (STD, XS, S 160 & XXS and special wall thickness) and of all common materials. Upon request, we also supply them of special materials.Type of OletsnipoletSize 1/8″ (6 NB) to 20″ (500NB)StandardMSS SP-97Class  3000LB（SCH40，SCH80，STD，XS） 6000LB（SCH160，XXS） MaterialGradeCarbon Steel ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F70 Stainless SteelASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L Alloy Steel  ASTM / ASME A/SA 182 F12, A182 F11, A182 F22, A182 F5, A350 LF2, A350 LF3 Nipolet

What is a insert weldolet? Insert Weldolet is another contoured butt-weld branch connection used in less critical applications. MaterialGradeCarbon Steel ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F70 Stainless SteelASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L Alloy Steel  ASTM / ASME A/SA 182 F12, A182 F11, A182 F22, A182 F5, A350 LF2, A350 LF3 Insert Weldolet A’ Dimensions (Height above run pipe)1 1/222 1/23456810121416182024Std Wt Run Pipe1.501.501.621.752.002.252.382.753.063.383.503.753.8144.56XS Run Pipe1.501.501.621.752.002.253.063.873.694.063.814.194.384.695.50.500″ to .750″ Thick Run Pipe–––2.883.313.754.124.184.254.374.504.695.135.626.50.750″ to 1.00″ Thick Run Pipe–––3.223.383.754.344.624.845.105.255.886.506.757.621.00″ to 1.25″ Thick Run Pipe–––3.383.504.004.504.885.005.385.506.006.507.008.001.25″ to 1.50″ Thick Run Pipe–––3.623.874.254.695.165.315.685.816.446.507.568.72 Outlet Size *’W’ Dimensions (Max. O.D. of fitting – Max. size of hole)1 1/222 1/23456810121416182024Std Wt Run Pipe3.504.254.885.697.008.069.7111.7114.0016.3217.5619.7522.0024.0029.00XS Run Pipe3.564.385.005.757.128.2510.4413.4414.2516.5618.0020.0022.4425.0030.32

Butt welding elbow is the use of high-quality steel plate by stamping die stamping into half a block ring bend or use of casting mould cast directly into half a block ring bend, then the two semi ring elbow group of welding forming, so butt welding elbow, also known as welding elbow. Butt welding elbow the corresponding process fabrication and welding, forming good production standards and performance, fully display the important performance using the corresponding materials. Butt welding elbow’s material is the core of the field of new materials, the development of high and new technology plays an important role in promoting and supporting, in the global research in the field of new materials, wear-resistant materials accounted for about 85%. Butt welding elbow in the use of the process should be kept clean, the screw thread transmission must be lubricated periodically, find fault, should immediately stop using the clear identification of the reasons for failure. Stamping welding elbow used to connect the two nominal diameter of the same pipe, so that the pipe to make a 90 degree turn. Butt welding flange‘s joint sealing material asbestos rubber sheet Asbestos rubber sheet as a universal gasket, do not consider the use of a wide range of conditions. Actually, asbestos rubber sheet is will asbestos fiber and different rubber and other adhesive mixing after pressing, is a porous non-metallic materials, and with different varieties and the ratio of composition, the variation of performance is great. In fact, foreign use of asbestos rubber plate with strict restrictions, such as the provisions of the United States DuPont flammable materials must not use asbestos rubber sheet, because in the event of fire, the asbestos rubber plate butt welding flange joint is difficult to guarantee not to produce secondary leakage. Japan “petroleum industry standard for asbestos rubber plate” provisions of flammable and toxic gases using asbestos rubber plate for 0~260 DEG C, is less than or equal to 1.0 MPa, water, air, water vapor, -50~260 DEG C, is less than or equal to 3.0 MPa. Moreover, the foreign standard of asbestos rubber plate performance requirements than domestic similar products to high. Thick pads are better than thin spacers. In fact, asbestos rubber sheet is a porous material, the thicker the gasket, the permeability is high, in order to ensure a high seal must be greater than the shim the pressing force is applied to the core part of the leakage rate is reduced, so the thick gasket is larger than the pressing force of the shim. For large molecules such as water, the leakage rate of the core part of the gasket is very small, and the thickness has little effect. Usually only the spacer flange diameter is large, consider the use of sealing surface waves or buckling at. The thickness of the general use of 0.81, 0.6, 3.2mm. Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)

Flange, defined as: the structure or mechanical parts is perpendicular to the axis of the parts to highlight the edge. Large butt welding elbow and flange on equipment performance requirements include the following contents: Flange’s surface is perpendicular to the vertical lathe table is horizontal rotation, so the tooling’s main function is to use the big end flange bolt hole on the tooling with flange connection. When clamping fixtures on the workbench, should ensure that processed flange concentric and parallel to the plane and vertical lathe workbench, to reduce the number of tooling, the tooling should be able to transform the clamping position, guarantee the elbow 2 in 1 tooling can end flange size. At the same time, the equipment must have enough stiffness, otherwise will seriously affect the processing quality of flange gasket groove, so in the use cases, should try to reduce the height of the tooling, so can increase the stiffness of easy to operation. After the tooling with elbow and flange fixed radius of gyration radius should not be more than vertical lathe work, and can be convenient clamping is easy to adjust, convenient to feed cutting. Large butt welding elbow and flange of tooling design and manufacturing By 2 pieces into 900 clamping plate, two piece of flange plate and two vertical plate and four blocks of stiffener plate compound and into. Attached to stiffness, in order to ensure the tooling of the plate weld should open groove weld penetration, weld Angle of 20-30 mm. On the flange plate corresponding bolt hole is drilled, guarantee the accuracy of the flange to flange plate with bolts connection, flange and plate on the back of the small end, the gap between can put small manual jacks and press along the vertical direction of plate on the flange plate open a gap, so that the elbow into tooling, adopt the structure of the thicker steel plate approximate trough type tooling, can satisfy the demand for rigid when cutting. Tooling simple and reasonable structure, easy fabrication, good rigidity, process alignment adjustment is easy to operate, fully meet the large butt welding elbow and flange stand on the machining needs of the three groups of elbow and flange completely qualified, not only for the enterprise to save 200000 yuan of money, but also for the future under the condition of no end of machine tools, with vertical lathe machining similar parts has opened up a new way. Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)

What is a Sweepolet? Sweepolet is a contoured, integrally reinforced, butt-weld branch connection with a low stress intensification factor for low stresses and long fatigue life. The attachment weld is easily examined by radiography, ultrasound and other standard non-destructive techniques. Manufactured to meet your specific reinforcement requirements. MaterialGradeCarbon Steel ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F70 Stainless SteelASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L Alloy Steel  ASTM / ASME A/SA 182 F12, A182 F11, A182 F22, A182 F5, A350 LF2, A350 LF3 Standard: ANSI, DIN, JIS Material: Carbon Steel ASTM A 234 WPB Stainless Steel ASTM A403 WP304/304L, WP316/316L, WP321, WP347 Alloy Steel ASTM A234 WP1, WP5, WP9, WP11, WP12, WP22, WP91 Schedule: Carbon Steel & Alloy Steel STD, XS, XXS, SCH10-SCH160 Stainless Steel SCH5S, 10S, 40S, 80S Size: 1/2”-48” Type: Sweepolet Saddle, Steel Saddle, Carbon Steel Saddle, Stainless Steel Saddle, Alloy Steel Saddle Advantage Comparing With Tee:  1.Sweepolet Saddle can overcome the defeats in the process of making tee without weak point.  2. Sealed better and easy to be installed, it won’t affect main pipeline. 3. Sweepolet Saddle use less material than tee, so it has a more competitive price. Sweepolet Weldolet Vs Sweepolet Weldolets (aka WOL) are cheaper in terms of purchasing cost than sweepolets (aka SOL). WOLs may, in some situations (large dia, thin wall) warp the pipe, i.e. unstraight and oval, due to excessive heat input arising form the relative thick required weld metal layer. Since for WOLs the weld metal thickness is always greater than for SOLs (where one only welds the base metal wall thickness), welding may require some extra time to allow cooling off on the heat input to prevent banana-warping the pipe. SOLs are less standard, I think most of the time custom made. Without having specific experience with SOLs, preparing and beveling the pipe for it may be more difficult/time-costuming compared to WOLs. For WOLs, you can weld them on, and then bore through the hole. This gives a smooth weld profile on the inside. This may give the best option for a flushing branch, as there is not weld metal ‘sticking into the run’ (provided the pipe doesnt become oval, as this will cause the pig trap to become stuck perhaps). Since the saddle form is quite specific (but then again, the SOL may be laid down on the pipe, and the contour can be drawn), and a lot bigger than WOLs, more material has to be removed. If you use a SOL and the run pipe is large enough in dia, you may counter grind the root weld to become flush. WOLs can be RT-ed, SOLs can. WOLs are likely to give more peak stress than SOLs, since the latter has a much more continuous profile into the branch.

Carbon steel butt welding flange is not easy deformation, good sealing, widely used for in pipeline pressure or temperature fluctuations in the pipeline or high temperature, high pressure and low temperature, the advantage of cheaper prices and heat-resistant performance good we all know when working temperature of 75 degrees, the softening temperature of 135 degrees. Nominal pressure is not more than 2.5MPa; also used to transport the price is expensive, flammable, explosive medium pipeline, nominal pressure at PN16MPa or so. Carbon steel butt welding flange can in different areas and industries play an important role and value, can according to a certain way and numbering method, according to certain standards of production and use, to ensure to their in the use of the important role and contribution. The four major characteristics of carbon steel butt welding flange: 1. Good insulation: carbon steel butt welding flange because of the low thermal conductivity of materials, 20 degrees Celsius heat conduction coefficient for 0.21-0.24W/mk, ratio of the steel tube, ultraviolet tube is much smaller, so the PP-R pipe insulation is good. 2. high impact: carbon steel butt welding flange because unique impact strength performance than other solid wall pipe have improved significantly, stiffness commensurate to 1.3 times the solid wall. 3. Long life: carbon steel butt welding flange pipe under the rated operating temperature and pressure, with anti – ultraviolet radiation, anti radiation. Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)

The high frequency vibration of high pressure piping has strict requirements on the assembly of the lens gasket of the high pressure flange. Before the assembly should be inside pipeline, pipe threaded end and tapered sealing surface, gaskets, high pressure flange and bolts, nuts and all the clean up, and check the appearance, when necessary, then coloring, magnetic or ultrasonic flaw detection. Any seals shall have crack; surface defects, which the pipe threaded end, high pressure flange, bolt and nut thread of the effective part of tooth high corrosion and wear shall not exceed 10% of the standard tooth height, each lap mechanical damage length should not be more than 1 / 5 of the perimeter, each circle and not larger than the circumference of a circle, bolt rod section shall not corrosion or mechanical damage; overproofed defects should be replaced in a timely manner. In the assembly process, attention should be paid to maintain a clean sealing surface, and strictly control the bolt of flange preload, the hydraulic tightening device or measuring torque wrench symmetric fastening. Stud bolt tightening after the elongation control in general is not more than 3 / 10 000 bolt length, high temperature control between the 3 / 10 000 ~ 5 / 10 000 bolt length, bolt ends exposed outside the nut thread length should be equal as far as possible and not less than 2 times the pitch, to remove more than twice the bolt pre tightening force of around 6% increase. Installation shall not use forced assembly and a requirement to keep two flanges parallel to the end surface, the parallel deviation control within 0.3mm, keep the two flanges on the axial center line of the coaxial, coaxiality error depending on the diameter size control in less than 0.3 ~ 0.5mm range, to really confidential cover good contact and prevent bad moment. Keep a good surrounding environment, do a good job of dampproof, dustproof and anti rust and other maintenance work, and according to the working temperature of the level of discretion in the high pressure bolt coated powder lubricating oil or grease molybdenum disulfide. Pipeline running at high temperatures, the general should be in keeping the temperature test operation 24h after, tube pressure relief to 0.5MPa (gauge) following then moderate fastening force will flange bolts in hot tight to seal the pretightening force; pipeline running at low temperatures, in keeping the temperature test operation 24h after unloading despite internal pressure and with methanol on the surface of the bolts of flanges. Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)