... COILSTEEL PIPESCERTIFICATEISO9001:2008STANDARDAISI, ASTM, DIN, GB, JISAISI, ASTM, DIN, GB, JISAISI, ASTM, DIN, GB, JISAISI, ASTM, DIN, GB, JISGRADE201,202,304,304L,316,316L ... NO.1220*2440MMOr1000*2000MM1250*6000MMOr1500*6000MM60MMTo1500MMTH:1.0~60.0mmOD: 6.0~610mmTECHNIQUECold Rolled Hot RolledCold/Hot RolledSeamless/WeldingSURFACETREATMENTBA/2BNO.1BA ...