Tianjin Rainbow Steel Group was founded in 2000, located in Tianjin City. With development of the past 20 years, Rainbow Steel became into an integrated iron and steel enterprise of galvanized Steel Pipe, galvanized Steel Angel bar, galvanized profiles, galvanized big Steel Structure for construction.Our team has manufacturing technologies, processing experiences, engineering capabilities and advanced equipments. Our people are intelligent and hardworking. Our products includes big steel structures for construction, high way traffic facilities, high speed rail steel structure post, subway steel props or steel structures, solar mounting system, and other big jobs of steel structure.Painted Sprinkler steel pipe is widely used for the water or other fluid transmission underground . Manufacture diameter is from 219mm to 1016mm. The joint is bevelded end or the flange joint. the internal epoxy coating can be used fot the transmission of living water and it is non toxic.