Steel Pipe ASTM A106B Competitive price Good and high quality control MTC and original certificate offered steel pipes ASTM A106bO.D21mm-406.4mmW.T4mm ... -45mmLengthLength:6m-12m,as requiredStandardsGB6479-2000,ASTM,JIS,DINMaterial10#,,20#(ASTMA106B,ASTMA53B)20g,Q345,Q390,15CrMo,12CrMo ...