Q345 seamless steel tube Standard:ASTM A53/A106B GB/T8162/8163/3087 JIS EN DIN Size:8~219mm Length: 5.8M -11.8M Q345 seamless steel tube StandardASTMA106 GRB /API5LGRB/ASTMA53GRBMaterialGRB 20# STEELOD1/4"-24",13mm-610mmWTSCH20,SCH40,SCH60,SCH80,SCH100,SCH120,SCH160,XXSUsageBoiler Use,water transport,Building,Machinery,Traffic,Aviation,Oil development ect.OD TolleranceD<48.3mm,+-0.4mm/-0.79mm , ...