Profile: Qingdao HQ Pipeline Co., Ltd. is a manufacturer & exporter of all kinds of pipeline products, mainly specializing in steel pipe fittings, casting, and forging. We are an ISO 9001:2000 certified company. Our pipe fittings include butt-welding pipe fittings, flange & forged fittings, malleable iron pipe fittings, ductile iron grooved fittings, and couplings. Our products are widely used in the field of petroleum, shipbuilding, natural gas, electric power, and chemical industries. Butt welding pipe fittings are accessories of pipeline system, which connect pipes by welding. They include tees, cross, elbows, reducers, bends, and caps. Butt welding pipe fittings are highly leak proof and resistant to corrosion. They are extensively used in water supply pipelines, industrial food processing pipelines, and in various other fluid transfer piping systems.