structural steel pipe with ASTM A106 GradeB 1.standard: ASTM JIS API DIN etc 2. ... :2-100mm4.Specification: ASTM A53 GR.B,ASTM A106 GR.B.A106 Gr.B etc.5.End Type: BE PE6. ... own steel pipe factory ,so we have the price advantage.Our company are specialized in the production of steel pipe ... Fourth,product Details StandardBS, JIS, GB, DIN, ASTM, APIStandardASTM A106,ASTM A53,10#,20# and so onGradeGr.B,X42,X46 ...