... name:black steel seamless pipes 2,size:1/2"~48" 3,wall thickness:1.5mm~160mm 4,delivery time:7days TypeSeamless steel pipeSizeSeamless Pipe ... expanded,cold drawn,and hot galvanizedSurface treatmentTransparent oil, rust-proof black oil or hot galvanizedPackingwooden case, pallet or as customers’ ... advance , the balance against with the copy of B/L) black steel seamless pipe