2025-01-02 The surface quenching and tempering heat treatment of straight seam welded steel pipe is usually carried out by induction heating or flame heating. The main technical parameters are surface hardness, local hardness, and effective hardened layer depth. Hardness detection can be carried out by Vickers
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2024-12-31 1. Fixed-length spiral steel pipes do not need to be bundled.2. If the ends of the spiral steel pipe are threaded, they should be protected by thread protectors. Apply lubricating oil or rust inhibitor on the threads. If the ends of the spiral steel pipe are broken, pipe mouth protectors can be adde
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2024-12-30 Control of the position of high-frequency induction coil of straight seam steel pipe: The excitation frequency of straight seam steel pipe is inversely proportional to the square root of capacitance and inductance in the excitation circuit, or proportional to the square root of voltage and current.
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2024-12-27 Controlling the wall thickness of straight seam steel pipe is a difficult point in steel pipe production. At present, the methods of wall thickness accuracy of straight seam steel pipe manufacturers in production generally include:1. Heating of pipe blank: heating should be uniform, and rapid temper
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2024-12-26 First, the regulations for thick-walled steel pipes in engineering projects: the corresponding regulations and various regulations for the actual selection and use of thick-walled pipe fittings. When thick-walled steel pipes and thick-walled pipe fittings are selected or used, they must first follow
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2024-12-25 First, the construction procedures of plastic coated steel pipes.(1) Plastic coated steel pipes should not be buried in reinforced concrete structures;(2) Welding is prohibited during the installation of plastic coated steel pipes;(3) Plastic coated steel pipes should be installed from large diamete
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2024-12-24 First, introduction to the anti-corrosion of the inner wall of large-diameter steel pipes:1. Before processing, all steel pipes should first be rust-free on the steel plate on one side of the inner wall of the large-diameter steel pipe, until the metal reveals the metallic luster (white). It should
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2024-12-23 With the widespread application of stainless steel pipes, people's requirements for them are getting higher and higher, and the processing technology has become more diversified. Pickling is one of the processing technologies. Do you know why stainless steel pipes after pickling will have a hydrogen
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