
Heat Resistant 321 Stainless Steel Seamless Pipe ASTM A213 for Boiler Heat Exchanger with Custom Dimension. Wide Grade Range: Available in 202, 304, 316, 321, 410, 904L and more for diverse applications. Custom Dimensions: Outer diameter 5mm-1200mm, thickness 0.5mm-30mm, and custom lengths available. OEM and ODM Services: Full customization options including designs, samples, and flexible customization. Multiple Surface Finishes: Options include 2B, BA, mirror, hair line, sandblast, and brushed finishes. High-Temperature Resistance: 310S and 321 grades offer excellent oxidation and creep resistance for boilers. Superior Corrosion Resistance: 316L and 904L grades provide exceptional resistance to chlorides and acids. Comprehensive Certifications: ISO 9001, SGS, CPR certified with full material test certificates provided.