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  • Anti-corrosion countermeasures of oil casing

    Anti-corrosion countermeasures of oil casing

    1. To make sure that the water quality meets the standards, and strictly monitor and manage the water quality. Implement cleaning and separate injection, strengthen the cleaning of main water pipelines, ensure that the water quality in the station and the bottom of the well meets the standard, an...
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  • Stainless steel pipe welding process method A

    Stainless steel pipe welding process method A

    High-frequency induction welding In high-frequency contact welding and high-frequency induction welding, the equipment that provides current and the equipment that provides squeezing force are independent of each other. In addition, both methods can use a magnetic rod, which is a soft magnetic el...
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  • What are the classifications of stainless steel pipes

    What are the classifications of stainless steel pipes

    1. Stainless steel pipes are classified by material Divided into ordinary carbon steel pipes, high-quality carbon structural steel pipes, alloy structural pipes, alloy steel pipes, bearing steel pipes, stainless steel pipes, as well as bimetallic composite pipes, plating and coating pipes to save...
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  • Production process of spiral steel pipe

    Production process of spiral steel pipe

    (1) Raw materials are strip steel coils, welding wires, and fluxes. Strict physical and chemical tests are required before investment. (2) Butt joint of strip steel head and tail, adopt single wire or double wire submerged arc welding, after coiling into steel pipe, adopt automatic submerged arc ...
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  • Key points of internal thread tapping of stainless steel pipe fittings

    Key points of internal thread tapping of stainless steel pipe fittings

    1 Tap design and manufacture a. Choose a better tap material. Adding special alloy elements to ordinary high-speed tool steel can significantly improve the wear resistance and toughness of the tap. b. Coating titanium nitride coating into the surface of the tap thread can significantly improve th...
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  • Hot rolling process in stainless steel pipe fittings

    Hot rolling process in stainless steel pipe fittings

    Simply put, the process of rolling steel material after heating it to a temperature above the recrystallization temperature is called hot rolling. And below the recrystallization temperature, the process including rolling at room temperature is known as cold rolling. Hot rolled steel has good pla...
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  • How to seal threaded steel pipe fittings

    How to seal threaded steel pipe fittings

    Through the colorless tape (plaster tape) on the thread, this is more efficient. 1. First, apply lead oil evenly on the outer thread of the thread, then evenly wind the hemp wire in a clockwise direction, and then screw on the inner wire steel pipe fittings and connectors (this method is a method...
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  • Introduction to water supply steel pipe

    Introduction to water supply steel pipe

    1. Aluminum-plastic composite pipe The aluminum-plastic composite pipe is the first water supply pipe to replace the cast iron pipe. Its basic structure should be five layers, namely plastic, hot melt adhesive, aluminum alloy, hot melt adhesive, and plastic from the inside to the outside. The alu...
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  • Prevent decarburization of steel pipe surface

    Prevent decarburization of steel pipe surface

    The key to resolving the problem of surface decarburization lies in the heat treatment process. Since the decarburization and the oxidation of the steel wire are carried out at the same time, as long as the steel wire is kept in contact with air as little as possible during the heat treatment pro...
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  • Oil and gas pipeline welding construction technology

    Oil and gas pipeline welding construction technology

    1.1 Manual welding with cellulose downward electrode When there is a pipeline with severe hydrogen sulfide corrosion or a pipeline operating in a cold environment, use a low-hydrogen type vertical downward welding electrode. Due to the flexibility of manual welding and the low requirements of wel...
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  • Introduction of anti-corrosion of inner wall of large diameter steel pipe

    Introduction of anti-corrosion of inner wall of large diameter steel pipe

    1. Before processing all steel pipes, the steel plate on the inner wall of the large-diameter steel pipe should be trusted, and it is required to reach the metal luster (whitening). It should reach the sa2.5 standard required in the “Surface Rust Grade and Derusting Grade of Steel Before Pa...
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  • Winding 3PE anticorrosive steel pipe

    Winding 3PE anticorrosive steel pipe

    3pe anti-corrosive steel pipes are pipes (steel pipes) used in different working environments. To slow down or prevent the pipes from being corroded and deteriorated by the chemical or electrochemical action of the external medium or by the metabolic activities of microorganisms, the outer wall o...
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