... . Length:5-12meters 3. API & ISO certificated ASTM A106/A53 Gr.B carbon steel pipe 1. OD 10.3-610mm WT:1 ... /A53 Gr.B carbon steel pipe:StandardAPI 5CT, 5L; ASTM, BS, JIS, DINSteel GradeAPI 5L Grade B/ASTM A106/A53 Gr.BO.D ... , Middle East, America, Europe,etc.We supply ASTM A106/A53 Gr.B carbon steel pipe,seamless pipes, welded pipes, galvanized pipes, special ...