Product News

  • Introduction on Welded Steel Pipe Classes and Features

    Introduction on Welded Steel Pipe Classes and Features

    The welded steel pipe of low pressure fluid is also known as the clarinet. This kind of welded steel pipe can be used like the common welded steel pipe, for example, transporting water, gas and oil, but also it can be used to convey low pressure steam heating fluid. The wall thickness of this kin...
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  • How to produce steel pipes

    How to produce steel pipes

    Steel is not only for the transmission fluid and powdered solids, heat exchange, manufacture of mechanical parts and containers, it is an economical steel. Building structure with a steel pipe manufacturing grid, pillars and mechanical support, can reduce weight and save 20 to 40% metal, and can ...
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  • How to make hot rolled pipe ?

    How to make hot rolled pipe ?

    Hot rolled (extrusion seamless steel pipe): round tube → heating → ​​perforation → → three-roll rolling, rolling or extrusion → detached → sizing (or reducing) → cooling → ​​straightening hydraulic test (orflaw) → tag → storage. Rolling seamless tube of raw materials is a round tube, tube embryos...
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  • Physical phenomena of spiral submerged arc welded pipe

    Physical phenomena of spiral submerged arc welded pipe

    Spiral submerged arc welded pipe widely used double submerged arc welding technology, the principle: Submerged arc welding is carried out by arc welding heat, and manual arc welding is different: submerged arc welding wire is bare, no paint above submerged arc flux is indeed to be welded in advan...
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  • On-line testing of welded pipe

    On-line testing of welded pipe

    Welded pipe at the factory to go through rigorous testing to ensure compliance with the provisions of pipe quality standards and user requirements. Pipe inspection items generally include: factory inspection items have the appearance quality, straightness, dimensions, and other types of weld qual...
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  • Marine Seamless Steel Pipe

    Marine Seamless Steel Pipe

    The steel pipe is very common in marine engineering. Two systems of ship and marine engineering demand roughly in three types of steel pipe: steel pipe in the conventional system, constructed with steel pipes and special purpose steel pipes. steel pipe in the conventional system. Different ship a...
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  • Hydrostatic test of spiral welded pipe

    Hydrostatic test of spiral welded pipe

    Spiral steel pipe carrying water application to conduct a hydrostatic test, usually it is testing machine to test when trials to ensure the quality of the spiral steel pipe. Spiral steel pipe hydrostatic testing machine works: Spiral steel pipe hydrostatic testing machine during a pressure test, ...
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  • High-pressure steel pipe production process and its simple maintenance

    High-pressure steel pipe production process and its simple maintenance

    The main production process of high-pressure steel pipe: billet heating, perforated tube, pipe extension. High-pressure steel pipe rolling, pipe sizing, reducing pipe, cooling and finishing steel or can be said to be heated perforated steel embryo hot rolled pickling spray head cut cold drawn car...
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  • Difference of Hot-rolled and Cold-drawn

    Difference of Hot-rolled and Cold-drawn

    Hot-rolled is based on the slab (mainly billet) as raw material, heated by a roughing mill and finishing mill group made of steel. From finishing the last one out of the hot strip mill by laminar cooling to the set temperature, the coiling machine rolled steel strip coils, steel roll cooled throu...
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  • disadvantages of welded pipes

    disadvantages of welded pipes

    Welded steel pipe is continuous online production, the thicker the thickness, the greater the unit and dissolves equipment investment, the less it has economical and practical. The thinner wall thickness, its input-output ratio will be reduced. The advantages and disadvantages of the process of t...
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  • Coefficient of expansion of precision steel pipe

    Coefficient of expansion of precision steel pipe

    Coefficient of expansion of precision steel pipe Check the method can be used in the annealing furnace soapy water to wipe each joint crevice, to see whether to run gas; places where gas is most likely to run into the annealing furnace tube and place the tube in place, this place seals are partic...
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  • Low carbon steel weld ability

    Low carbon steel weld ability

    Because of the low carbon steel is with low carbon content, manganese, silicon content is also small, therefore, under normal circumstances will not be welded to produce severe hardening tissue or quenched structure. Low carbon steel welding joints plasticity and the impact good toughness, weldin...
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