... API 5CT,API 5CT.5B,GB/T9711.1,GB/T9711.2-99 ect Material :J55,K55,N80 ect Product Name:pipe for oil ... casing pipe/tubePlace of originTianjin, China(Mainland)StandardAPI 5L,API 5CT,API 5CT.5B,GB/T9711.1,GB/T9711.2-99 ... ProcessweldedOD(mm)73mm-630mmWall Thickness(mm)5mm-30mmSurfaceBlack/brightBrand NamePetroleum, oil , gas, chemistry, electrical power, metallurgy,etcPackingBundles,sea-worthy or ...