... Q215, Q235, Q345, X52, X60 STK500, or per the buyers demand. 3) Standards: BS1387, GB/T3081, GB/ ... welded stab can be removed 5) Dimension of the pipe: A)Outside diameter: From 219.1mm ... 8m or 12m, or per the buyers demandCangZhouTianYi Co., Ltd. Is one of the leading manufactures of welded steel ... was founded in 1999. We always put the quality as the first consideration. If you have any requirement ...