Zhongyuan Pipeline Manufacturing Co., Ltd.,Spiral Steel Pipe

The business tenet of the company is “Prosperity from Credit, Win-win from Cooperation”.

Top ten Enterprise in steel pipe Industry of China

The production is according to standard of API Spec 5L, EN10217, AWWA C200, GB/T9711, GB/T3091, GB/T23257(anti-corrosion)

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Zhongyuan Pipeline

With an annual production capacity of 1.0 million Tons steel pipes and 1.6 million square meters anticorrosion coating pipes

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Production strength

Two anticorrosion coating production lines of internal and external liquid epoxy in the specification of φ406.4mm-φ3620mm and two internal and external FBE production lines in the specification of φ406.4mm-φ2540mm.

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PRODUCTS

With an annual production capacity of 1.0 million Tons steel pipes and 1.6 million square meters anticorrosion coating pipes

Spiral Steel Pipe

Spiral steel pipes are suitable for corrosion resistance of a variety of steel structures, water gates, coal gas tanks, wharfs, ships and equipment in oil refining and chemical plants, and for leakage prevention and waterproofing of cesspits, concrete pipes, roof waterproof layers, basements, bathrooms and other concrete structures. Meanwhile, they are mainly used for corrosion resistance of outer walls of buried or underwater steel pipes for transmitting gas, oil, heat and water.

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Spiral Steel Pipe

Bending of spiral weld pipes of spiral steel pipes: plates can be bent for 180°, but to reduce cracks on the curved surface, the radius is two times of the thickness, the thickness radius of thick plates is determined twice in the rolling direction, and the bending direction shall be vertical to the rolling direction. The radius that is 4 times of the plate thickness shall be guaranteed, especially in the case of welding. To prevent processing cracks, the surface of the welding area shall be ground. The welding repair method of spiral weld pipes with crack is one of the methods for heat resistance of stainless steel. With extraordinary inoxidizability and corrosion resistance performance, it is usually applied to pipes of alkali made through electrolysis with ion-exchange film. However, the material has high requirements for the technology, so serious potential hazards will be caused once the alloying element and the filling material of the base is incomplete, the weld process is unsuitable, the working condition is not good, medium in the pipe is corroded, there are working stress and pipe crack, etc. Therefore, crack recovery is also one good repair method.

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Spiral Steel Pipe

Type-I weld joints of Zhongyuan spiral weld pipes: all the weld joints in Y-branch pipes. 2. Longitudinal joints on steel pipe walls. 3. Circumferential welds of steel pipes. 4. Circumferential welds closed through pinching. 5. Weld joints are between the baffle and the pipe wall. If such weld joints are detected with the ultrasonic detection method, the detection rate shall be 50%, the detection rate of x-ray detection shall be 5%, and the required quality shall be B1.

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Spiral Steel Pipe

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ABOUT US

Enterprise Culture Construction of Zhongyuan Company

Zhongyuan Pipeline Manufacturing Co., Ltd. (originally known as Hebei Zhongyuan Steel Pipe Manufacturing Co., Ltd.), is situated at Chengnan Industrial Park, Yanshan county, Hebei province, covering an area of 545,000 square meters and a construction area of 210,000 square meters. It has a total asset of RMB 1.1 billion and 980 staffs. It has advanced 13 production lines of spiral seam double side submerged arc welding steel pipes, two coating production lines of three layers of polyolefin (PE, PP) in the specification of φ219mm-φ2420mm...