SHIWANG STEEL PIPE is a leading manufacturer of SAW (Submerged Arc Welded) stainless steel pipes, with a strong focus on large-diameter, heavy-wall straight seam welded pipes. Our advanced welding technology and rigorous quality systems ensure unmatched strength, corrosion resistance, and performance in demanding industrial applications.
Product Name | Longitudinal Submerged Arc Welded (LSAW) Stainless Steel Pipe | |
Brand | SHIWANG STEEL PIPE | |
Material Grade | AISI 304 / 304L / 316 / 316L / Duplex / Custom | |
Standards | ASME B36.10M / B36.19M, ASTM A358 / A778 / A999 | |
Welding Method | SAW – Submerged Arc Welding (Single or Double-sided) | |
Outer Diameter | 8” – 64” (219mm – 1625mm) | |
Wall Thickness | 5mm – 70mm | |
Length | Up to 13m, custom lengths available | |
Finish | Pickled, Polished, Brushed (as required) | |
Ends | Beveled / Plain / Flanged |
Plate Cutting – High-quality stainless steel plates are cut precisely to required width.
Edge Milling – Plate edges are prepared for consistent welding quality.
Forming – Plates are formed into round pipes via UOE or JCOE method (as per order).
Submerged Arc Welding – Internal and external welds completed using advanced SAW technology.
Heat Treatment – Solution annealing and stress-relief processes to ensure pipe durability.
Weld Seam Inspection – 100% NDT (X-ray, UT) for seam reliability.
Hydro Testing & Final Inspection – Pressure tests and dimensional verification per standard.
