... oiled or black painted to prevent rust . TYPESeamless steel pipe (hot finished steel tube )StandardDIN17175,DIN1626,DIN2448,DIN17120,API 5L, API 5CT ... rangePetroleum, chemical, power; (oil, gas, water) liquid transport; shipbuilding, construction, steel structure; city piping system etc.Min Order QuantityAccording to customer's ...