... erw carbon steel pipe1.Application of steel pipe:structure pipe2.OD of erw steel pipe:20mm -325mm3.W.T. of carbon steel pipe ... :0.3mm-14mm4.Material of erw steel pipe:Q195,Q235,Q345,carbon steel pipeerw steel pipesteel pipe carbon steel pipeO.DO ... info.We ,Tianjin wenyunxing Steel Pipe Co.,Ltd is a professional and reputed manufacture, for carbon steel welded pipes and galvanized