... many years.Our steel pipes are us stainless steel round pipe1.Specification:GB6728,DIN,JIS,ASTM-A5002.Grade: ... / S, TP316L, TP316 / 316L dual grade, TP317L,TP321, TP347 5) Standards: ASTM (ASME) SA / A312 / MCommodity Description Stainless steel ... (0Cr18Ni10Ti), 316(0Cr18Ni12Mo2), TP317L, TP347H, 904L, 316L (00Cr17Ni14Mo2)5. Section Shape Round6. Technique Cold Rolled7. Certification BIS8. Application ...