Views: 38 Author: Site Editor Publish Time: 2022-01-24 Origin: Site
Buttwelding pipe fittings are processed by steel pipe or steel plate made shape as elbow, tee, reducer, bend, cross, stub end and cap. They are widely used in oil, natural gas, water conservancy, shipbuilding, construction and so on. We manufacture these fittings and inspect the dimensions tolerance as per ASME B16.9 standard.
Dimension Tolerance
Manufacturing
This kind of pipe fitting would be made by a process known as hot forming. This would include bending the pipe and then forming it in to a shape. The starting material of this fitting would be a pipe that would first be cut in to length. This would then be heated and molded in to specific shapes with the help pf dies. In addition, heat treatment would also be done in order to get the desired mechanical properties and removed residual stresses.
Specification
| Sizes | 1/2” to 84” / DN15 to DN1200 |
| Thickness Schedule | Sch 10S, 20, 40, STD, 80, XS, 100, 120, 160, XXS. |
| Standard | ASME B16.9 / MSS SP-43 / ASME B16.49 |
| Carbon Steel Material | ASTM A234 WPB / WPC, A860 WPHY42 / WHPY52 / WPHY60 / WHPY65 / WPHY70, A420 WPL6 |
| Alloy Steel Material | ASTM A234 WP5 / WP91 / WP11 / WP12 / WP22 / WP9 / WP92 |
| Stainless Steel Material | ASTM A403 WP304 / 304L, WP316 / 316L, WP310S, WP321, WP904L, WP347 |
Functions
• Change of the direction of flow in a piping system.
• Join or connect equipment and pipes.
• Provide access, branches and takeoffs for auxiliary equipment.
Buttweld Fittings VS Socket Weld Fittings
Standard
BW: ASME B16.9
SW: ASME B16.11
Size
BW: 1/2 Inch to 84 Inch
SW: 1/8 Inch to 4 Inch
Welding
BW: Butt Welding
SW: Fillet Welding
Install
BW: Not easy but in good strength
SW: Easy to install and fillet weld
Price
BW: Cheaper but with extro cost
SW: Expensive in similar size
