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  • EFW pipe vs ERW pipe

    EFW pipe vs ERW pipe

    Electric Fusion Welding(EFW steel pipe) refers to an electron beam welding, the use of high-speed movement of the electron beam directed impact kinetic energy is converted to heat the workpiece so that the workpiece leaving the melt, the formation of the weld. It is mainly used for welding dissim...
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  • Coal tar epoxy pipe storage methods

    Coal tar epoxy pipe storage methods

    1. The principle requires coal tar epoxy pipe stacking under palletizing firm to ensure the safety of the premise, according to achieve varieties, specifications palletizing, different varieties of materials to palletizing respectively, to prevent muddy and mutual erosion; 2.Banned in coal tar ep...
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  • Characteristics of round billet continuous casting

    Characteristics of round billet continuous casting

    Round billet used in the production of seamless steel tubes of different caliber. Seamless steel pipe production round billet while rotating propulsion and perforation, round billet is inclined to rely on two rollers to rotate the rod core end plug. The inner surface of the inner wall is perforat...
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  • Application of steel pipes in concrete structures

    Application of steel pipes in concrete structures

    It is often seen that it is used in water-cooled steel pipe structural systems. This is to use a specially designed structural system to make the water containing antirust and antifreeze constitute a circulation, and reduce the temperature to improve the refractory of the steel. This closed chann...
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  • Causes of pits on the surface of seamless steel pipes and treatment methods

    Causes of pits on the surface of seamless steel pipes and treatment methods

    Continuous pits on the surface of seamless steel pipe cause: 1. Heavy wear on the rolls and grooves 2. The roll is not cooled well, and the surface is sticky steel 3.The surface of the conveying roller table is not smooth 4.The high temperature heating time of the abandoned tube in the heating is...
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  • Production steps of spiral steel pipe

    Production steps of spiral steel pipe

    How to produce a variety of spiral steel pipes from a piece of steel? Today I will introduce to you, the steps in the production of spiral steel pipes are briefly introduced. (1) Various inspections of raw materials. Raw materials generally refer to strip coils, welding wires, fluxes, etc. Before...
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  • How does the weld burr of the anti-corrosion spiral steel pipe form and eliminate

    How does the weld burr of the anti-corrosion spiral steel pipe form and eliminate

    How does the weld burr of the anti-corrosion spiral steel pipe form and eliminate The technology of removing internal burrs is difficult. Because the special device for removing internal burrs is inside the steel pipe, the working environment is very poor, invisible and inaccessible. It is affect...
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  • Why is galvanized steel pipe corrosion resistant?

    Why is galvanized steel pipe corrosion resistant?

    Galvanized steel pipe is made by reacting zinc in a molten metal state with an iron substrate to generate an alloy layer, thereby combining the substrate and the plating layer. In the use of galvanizing technology, hot-dip galvanizing of galvanized steel pipe is to pickle the steel pipe first. In...
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  • Where are alloy steel tubes suitable?

    Where are alloy steel tubes suitable?

    Alloy pipe is a kind of seamless steel pipe. Alloy pipe is divided into structural seamless pipe and high-pressure heat-resistant alloy pipe. The main difference is the production specifications of the alloy pipe and its industry. Annealing and tempering of the alloy pipe changes its mechanical f...
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