... -45mm 2.Well-quality and competitive price 3.API AND ISO ASTM A 106 GRB Carbon Steel Pipe:1.SIZE:21.3 ... -88.9*3-15mm2.Well-quality and competitive price3.API AND ISO ... ,or according to customer requirement.ASTMStandardASTM A 106-B,ASTM A 53-B,API 5LMaterialGR.A,GR.B,X42 X46 X52 X56 X60 ...