Stainless steel welded tube / pipe 1. Standard: GB, ASTM, JIS, DIN, EN, AISI 2. Material: 304, 304L, 316, 316L, ... etc Stainless steel welded tube / pipe1. Standard: GB, ASTM, JIS, DIN, EN, AISI2. Material: 304, 304L, 316, 316L, etc3. ... , mechanical polishing.8. Test: eddy current, hydrostatic test, mechanical properties test, chemical test, etc.9. Packing: plastic bag, seaworthy woodedn ...