1. Size: (6mm-630mm)*(1mm-45mm) 2. Material: 200 series, 300 series, 400serieS 3. Standard: ASTM, AISI, DIN, JIS, EN, GB ... 1. Size: (6mm-630mm)*(1mm-45mm)2. Material: 200 series, 300 series, 400series3. Standard: ASTM, AISI, DIN, JIS, EN, GB 4 ... test, water pressure test, crystal rot test, heat treatment, NDT 300 series TP 304 cold rolled Seamless Steel Pipe