hot rolled carbon seamless steel pipe 1.O.D:16mm-630mm 2.thickness:2mm-25mm hot rolled carbon seamless steel pipe Descriptionhot rolledcarbon seamless steel pipeTechniquehot rolled, cold rolled, cold drawnStandardGB/T8162-1999,GB/T8163-1999,GB3087-1999,GB5310-1995,GB6479-2000Material20#, 45#, A106B, A53BThickness2mm-25mmO.D16mm-630mmPayment30% TT in advance, balance against copy B/L; 100% ...