... 200series&300series&400series CR material 201 stainless steel pipe1. Standard: ASTM A240, JIS G4304, G4305, GB/T 4237, GB/T 8165 ... ,MIRROR,NO.1-NO.4,8K,and so on.StandardASME, ASTM, EN ,BS,GB,DIN, JIS etcMaterial201,202, 301,304,410 ... finished, after cold rolling, by heat treatment, pickling or other equivalent treatment and lastly by cold rolling to given appropriate luster ...