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ASTM A403 ASME B16.9 BW Stainless Steel Butt Welding Fittings
Product Information
Stainless steel butt welding fittings come in various types to accommodate different piping configurations. Common types include elbows, tees, reducers, caps, stub ends, crosses, and lap joint stub ends. These fittings allow changes in direction, branch connections, size transitions, and closure of pipe ends.
Stainless steel butt welding fittings are a type of pipe fittings used for joining stainless steel pipes or components by butt welding. These fittings are specifically designed to provide a strong, leak-free, and permanent connection in a piping system.
| Product Name | ASTM A403 ASME B16.9 BW Stainless Steel Butt Welding Fittings |
| Size Range | Dimension: 1/2” to 48” |
| Wall Thickness | SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120,SCH140, SCH160, XXS |
| Pressure Class | Class 150 to Class 2500 |
| Standards | ASTM A403 |
| Dimensions | ASME B16.9 |
Stainless Steel Butt Welding Fitting
Stainless steel is known for its excellent corrosion resistance properties. Stainless steel butt welding fittings are highly resistant to corrosion, making them suitable for various applications, including those involving corrosive fluids or environments.
The standard butt welding fittings can be furnished in various forms covering elbow (90°, 45°, long radius, short radius, 3D radius, reducing), 180° return (long radius,short radius), tee & cross (straight or reducing), lap joint stub end (long pattern , short pattern), cap, reducer (concentric or eccentric). The wall thickness of the fitting is often specified by a schedule number, which is a dimensionless number that is widely used as a convenient designation for use in ordering pipe and fittings.
Materials of Butt-Welding Fittings
| Steel Type | Materials | Grades |
| Stainless Steel | ASTM A403/A403M | WP304(H/L/N/LN) WP309 WP310 WP316(H/L/N/LN) WP317 WP321 WP321/H WP347 WP347/H WP348 |
| Carbon Steel | ASTM A234/A234M | WPB WPC WP1 WP12CL1 WP12CL2 WP11CL1 WP11CL2 WP11CL3 WP22CL1 WP22CL3 WP5CL1 WP9CL1 WP9CL3 WPR WP91 WP911 |
| LT Carbon Steel: | ASTM A420/A420M | WPL6 WPL9 WPL3 WPL8 |
Size Ranges
| Elbow | Tee | Reducer | Cap | ||||
| Seamless | Welded | Seamless | Welded | Seamless | Welded | Seamless | |
| Nominal Pipe Size | 1/2”-16” | 18”-72” | 1/2”-16” | 18”-72” | 1/2”-16” | 18”-72” | 18”-56” |
| Wall Thickness | Sch 5S-Sch160 | ||||||
