HQ Pipeline Co., Ltd (Pressure Fittings) is a professional manufacturers & exporters of all kinds of high pressure pipeline products in China, mainly specializing in kinds of steel pipes, steel pipe nipples and coupling, high pressure fittings (steel butt-welding pipe fittings, steel forged fittings), forged flanges and OEM/ODM service, which are widely used in the field of petroleum, natural gas, ship building, metallurgy, electric power, chemical industries, etc.