Hebei Beihai pipeline Manufacturing Co. ( http://www.guandaogs.com 13733273698) is a professional engaged in metal pipes and pipe fittings products R & D, design, production and sales, is the domestic high grade steel, resistant to high pressure, large diameter end pipe fittings products professional supplier. Production of diameter 219 ~ < 3650 * 5-32mm spiral submerged arc welded steel pipe, steel pipe ( SSAW ) implementation of domestic and overseas standards such as GB / T9711.1-1997 or GB / T9711.2-1999 or APl 5L, Q235, Q345, steel grade B ~ X80, and the introduction of the new production of the inner lining stainless steel spiral pipe, using stainless steel and ordinary carbon composite plate rolled, the wall is made of stainless steel of various specifications of spiral submerged arc welded steel pipe, the annual production capacity of 200000 tons; products are mainly used in oil, gas, natural gas, water, thermal power and hydropower station, infrastructure construction and chemical industry and so on, at the same time in the piling, bridges, steel the structure has been widely used.