Standard:API 5L,API 5CT,API 5CT.5B,GB/T9711.1,GB/T9711.2-99 ect Material :J55,K55,N80 ect Product Name:pipe for ... field1,Outer Diameter:73mm-630mm2,Thickness:5-30mm3,Application:For line pipe in petroleum and natural gas4,Quality:First grade5,Others:Special ... with black or other paintingCommodityOil casing pipe/tubePlace of originTianjin, China(Mainland)StandardAPI 5L,API 5CT,API 5CT.5B,GB/T9711.1,GB ...