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  • [Industry News] Flange: Anti-corrosion method of plastic steel pipe

    Although chemical cleaning can make the appearance reach a certain degree of cleanliness and roughness, but its anchor lines are shallow and easily pollute the situation.Damage welding is to put two plastic-coated pipes directly in the non-destructive welding parts, and it can be directly welded by

  • [Industry News] Connection method of galvanized steel pipe

    Galvanized steel pipe connection method: threaded, welded.Roll groove connection(1) Cracking of roll groove weld1. Smooth the inner wall welding ribs of the pressure groove part of the nozzle to reduce the resistance of the rolling groove.2. Adjust the axis of steel pipe and rolling groove equipment

  • [Industry News] The development of welded steel pipe

    Summary of welded steel pipes on January 6: raw materials continue to support welded steel pipe prices stabilize and consolidateOn January 6, domestic welded steel pipe prices rarely adjusted. According to the monitoring data of Lange Steel Cloud Business Platform: The average price of 4-inch (3.75m

  • [Industry News] How to use the elbow

    How to use the elbowAnalysis of the main reasons for the decline in quality of elbows and methods of attention:1. In pure bending, under the action of external force M, the outer arm wall of its neutral layer is thinned by tensile stress &1, and the inner side is under compressive stress. The result

  • [Industry News] Quality inspection of spiral steel pipe

    Spiral steel pipes should be subjected to mechanical performance test, flattening test and flaring test before leaving the factory, and must meet the requirements of the standard. The quality inspection methods of straight seam steel pipes are as follows:1. Judging from the surface, that is, in appe

  • [Industry News] Introduction and application of galvanized steel pipe

    Galvanized steel pipes are divided into cold-galvanized steel pipes and hot-dip galvanized steel pipes. Cold-galvanized steel pipes have been banned, and the latter is also recommended by the state to be temporarily used. In the 1960s and 1970s, developed countries in the world began to develop new

  • [Industry News] Overview of welded steel pipes on January 5

    On January 5, domestic welded pipe galvanized pipe prices continued to fall.According to the monitoring data of the Lange Steel Cloud Business Platform: The average price of 4-inch (3.75mm) welded pipes in key domestic cities was 4,738 yuan, a decrease of 5 yuan from the previous trading day. Among

  • [Industry News] Technical characteristics of oil pipeline anticorrosion

    Oil pipeline anti-corrosion is the most important part of oil pipeline engineering management. Due to the vast areas of my country, the transportation system of oil companies uses long pipelines for underground logistics transportation. All have played an important role, so the anti-corrosion treatm

  • [Industry News] Testing method of seamless steel pipe hardness

    Seamless steel pipes must be tested for mechanical properties. Seamless steel pipes are widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipes, automobile transmission shafts, bicycle frames, and steel scaffolding used in construction. Steel pipes are used t

  • [Industry News] Application processing method of seamless steel pipe

      1. Grinding of the pipe mouth of seamless steel pipe: After cutting, the plastic layer of the pipe mouth should be polished with an angle grinder. The purpose is to avoid melting or burning of the plastic layer during flange welding and destroying the pipe. Use an angle grinder to polish the plast

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