Haicheng Liaohe Large Steel Tube Co., Ltd. was established in 2002 with a registered capital of 100 million RMB and an area of 100,000 square meters. It is a large modern and standardized enterprise specializing in spiral steel pipe, insulation pipe, steel-plastic composite and three-layer PE (3PE) pipe. The factory is located in Tiexi Economic Development Zone, Haicheng City, Liaoning Province.

At present, there are 356 employees in the enterprise, including 52 technicians of high and intermediate quality, and 6 spiral steel pipe production lines. The production specifications are DN219-DN4020 spiral steel pipe with wall thickness of 5 mm-32 mm. The annual production capacity is 250,000 tons, four production lines of prefabricated direct-buried insulating pipe and several advanced equipment for insulating and repairing joints. The production specifications are DN50-DN1620, the annual production capacity is 1000 km, and four steel-plastic composite pipes are produced. Line, production specifications for DN219-DN4020, annual production capacity of 800 km, three PE anti-corrosion pipe production lines. The production specifications are DN219-DN1600, with an annual production capacity of 1000 kilometers; 4 production lines of steel-plastic composite pipe with socket and socket, DN219-DN4020, with a wall thickness of 5 mm-32 mm and an annual production capacity of 800 kilometers; 3 internal rust-removing shot blasting machines, 3 internal spraying liquid coating production lines (DN89-DN4020), 4 internal spraying hot-melt epoxy powder and polyethylene spraying lines (DN219-DN4020), with an annual production capacity of 10. 00 kilometers. All the products are in accordance with the national standards GB/T9711-2011, SY/T5037-2000 of the Ministry of Petroleum, CJ/T114-2000 of heat preservation pipe urban construction, GB/T 2897-2012 of steel-plastic composite pipe, GB/T 23257-2009 of 3PE winding standard and enterprise standards of socket steel-plastic composite pipe. Products are widely used in petroleum, natural gas, thermal pipe network, chemical industry, gas, pulp, brine, electricity, irrigation, piling and other projects. Relying on Angang, Bengang and Tangshan Steel, the company has sufficient raw materials and geographical advantages.

In March 2002, the company passed the ISO 9001-2000 quality management system certification and special equipment pressure license, and established a strict quality assurance system to ensure that the product quality pass rate of factory inspection is 100%. The products are sold all over the country and exported to Saudi Arabia, Russia, Myanmar, Iran and other regions. They have won high praise from users for their high quality products and perfect technical services.

Over the past few years, with the competitive consciousness of galloping the market, the pursuit of perfect strict style, continuous innovation and enterprising spirit, and people-oriented management concept, the company has successively made technological renovations and purchases: Lincoln Welding Machine, Pipe Inner Wall Shot Blast Rust Removal Machine, Pipe Outer Wall Shot Removal Rust Removal Machine, Medium Frequency Heating System, Electrostatic Powder Spraying Machine, Polyethylene Powder Spraying Machine, etc., Measuring equipment: X-ray real-time imaging system, ultrasonic testing equipment, magnetic powder testing equipment, hydraulic testing machine, tension testing machine, bending testing machine, carbon and sulfur analyzer, Japan Shimadzu spectrometer, Charpy impact machine, metallographic microscope, hardness tester, drop hammer equipment, tension testing machine, differential thermal analyzer, pull-out adhesion tester, impact testing machine, paint film elasticity testing machine The instrument, pencil hardness tester, salt spray testing machine, roughness measuring instrument, infrared thermometer, coating thickness gauge and electric spark leak detector have formed a perfect physical and chemical inspection facility.