good quality spiral welded structure pipes 1.8-1240mm*1-200mm 2. good quality ,black 3. ... large stock We produce these SSAW Steel Pipes for piling,strictly according to ASTM A252-1998 Standard & customized ... ,JIS,BS,EN,etc.5) Steel Grade: API5L Gr. B, X 42, X46, X52, X56, X60, X65, X70, Q235B, Q345B, L245 ... 12) Seaports and Docks etc. good quality spiral welded structure pipes