... .W.T:2-30mm, OD:14-630mm 3.Material:20#,45#,16Mn,ST37 3.5 inch steel pipe Size1/2"-36"(DN15-DN900 ... ,API,JIS,BS,DINRange of applicationFor conveying oil, gas,water and other fluidEndbeveled end or plain end SurfaceBlack painting.anti-corrosion ... days after confirming the orderPackageAs customers' requirementPortTianjin Xingang port,China 3.5 inch steel pipe