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ASME B16.9 MSS SP-43 Stainless Steel Butt Welding Fitting
Stainless steel butt weld fittings offer excellent resistance to corrosion, making them suitable for use in corrosive environments or media. The stainless steel material provides protection against rust, oxidation, and chemical attack, ensuring the fittings maintain their integrity over time.
Butt weld fittings are pipe fittings used to change of direction of flow, to branch off, reduce pipe size or attach auxiliary equipment. Butt weld pipe fittings in stainless steel are the joining components that make possible the assembly of valves, pipes and equipment onto the piping system. And butt weld fittings are available in multiple shapes, such as elbows, tees, caps, reduces, stub ends and olets.
Stainless Steel Butt Welding Fitting application
Chemical and Petrochemical Industry: Butt weld fittings made from stainless steel are suitable for handling corrosive chemicals and aggressive substances in chemical plants and refineries. They are used in processes involving acids, solvents, and other chemical compounds.
Food and Beverage Industry: Stainless steel butt weld fittings are widely used in the food and beverage industry due to their hygienic properties and resistance to corrosion. They are employed in processing plants, breweries, dairies, and other facilities where cleanliness and product integrity are critical.
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 | ||||||