321Seamless Stainless Steel tubess 1.Grade:304,304L,316,316L,321,317L,310S,904L and so on. 2.Standards:ASTM,JIS, ... DIN,GB ,etc 321 Seamless Stainless Steel PipeFeatures:1) pipe diameter : 6mm- ... ,317L,310S,904L and so on.3) Standards: /ASTM/ASME/DIN/JIS and etc4) Applications range: for use ... .11) Capacity:500 ton per month 321 Seamless stainless steel tube