... , DIN, ASTM 3.Grade :20#.45# 16Mn Q235 1. seamless steel pipe/tube2.Standard: BS, JIS, GB, DIN, ASTM 3.Grade ... precision cold rolled steel tubes are avalible here6.Application use for oil well, boilers, precision machines, petro-chemical, ship, structure pipe, automobile ... beveled,ends protected with plastic caps.In bundle hot rolled carbon seamless steel pipe