... , low temperature resistant, corrosion resistant seamless steel pipe used. 1. Grade: AISI 316L,316,310S,310,303,304,317,321 AISI ... ,420,430,430F,4031,416 AISI 201,Y201Cu,2022.Starndard: ASTM,JIS,GB,EN,AISI3.Surface: Bright,Polished,Turn smooth(Peeled ... .Size: Hot rolled round bar diameter from 5.5mm to 110mm Hot forged round bar diameter from 110mm to 400mm Cold drawn round bar diameter from 2 ...