... 2-30mm, OD:14-630mm 3.Material:20#,45#,16Mn,ST37 3.5 inch steel pipe Size1/2"-36 ... "(DN15-DN900)W.T2mm-30mmOD14mm-630mmLength4m-12mMaterial20#,45#,16Mn,Grade B ... ,ST37,ST42,ST45,X42-X65StandardASTM,API,JIS,BS,DINRange of applicationFor conveying oil, gas,water and other fluidEndbeveled end or plain ... customers' requirementPortTianjin Xingang port,China 3.5 inch steel pipe