... Quality A106/53 Gr B Carbon Steel Pipe OD: 14-630mm WT: 2-80mm Grade:Gr.B/ A106B High Quality A106/ ... 53 Gr B Carbon Steel Pipe StandardAPI 5L; ASTM, BS ... , JIS, DINSteel GradeAPI 5L Grade B/ASTM A106B, BS 1387O.D.2mm-80mmW.T.14mm-630mmLength5m ... . Lisa.liTel86-311-86987980 High Quality A106/53 Gr B carbon Steel Pipe