1. ASTM A554 (EN10296-2) Stainless Steel Welded Tubes for Decoration and Mechanical Structure and General Engineering Purpose
2. EN 10217-7 Stainless Steel Welded Tubes for Pressure Purpose
3. ASME/ASTM SA/A249/A269/ A789 Stainless Steel Welded Tubes for Heat Exchanger, boiler, Super Heater, Condenser and General Usage
4. ASTM A270 (S2/3A/AS1528/EN 10357)Stainless Steel Welded Tubes for Sanitary Food Grade