... oil casing pipe 2.Mainly export to Southeast Asia,Africa,Mid East,Eastern Asia,North America etc. 3.Standard : GB , API,JIS CommodityOil casing pipe ... (0.5-140mm)SurfaceBlack/brightBrand NamePetroleum, oil , gas, chemistry, electrical power, ... oil casing, conveying gas and oil,chemical industry,etc NoteWe are Tianjin Hong-Peng High-Pressure Alloy Pipe ... pofessional information. seamless oil casing pipe