we are specialized in providing high-end products and service for industries such as petroleum, refining, chemical engineering, metallurgy, electric power, shipbuilding, gas transmission and pipe-line transportation. Main products: High (medium, low) pressure pipe fittings and parts series; seamless (straight slit, spiral) steel pipe series; thermal insulation (wear-resisting, corrosion resistant) pipeline series. The company has obtained ISO9001:2008 Quality Management System ...