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The reasons for the leakage of hot-dip galvanizing of seamless steel pipes
The reasons for the leakage of hot-dip galvanizing of seamless steel pipes causes and solutions: 1. The surface of the plated parts is not clean (1) The surface of the plated parts contains paint, grease, and soldering iron; it can be polished or scrubbed with relevant solvent...Read more -
Surface treatment method of anti-corrosion spiral steel pipe
1. The surface of the anti-corrosion spiral steel pipe is cleaned with solvent and emulsion, which can remove the organic matter on the surface of the spiral steel pipe, but it cannot remove the surface rust, oxide scale, welding flux, etc., so cleaning can only be used as an ...Read more -
The reason for the wrong side of the spiral steel pipe
In production practice, the steel pipe is often degraded by the wrong side and out of tolerance. Therefore, it is necessary to analyze the reasons for the misalignment of the spiral steel pipe and its preventive measures. The camber bend of the steel strip is the most importan...Read more -
Welding treatment of thick-walled spiral steel pipe
Thick-walled spiral steel pipe is a method of arc welding under the flux layer, which is formed by using the heat generated by the arc burning between the flux and the welding wire under the flux layer, the base metal, and the melting wire flux. In the process of use, the prin...Read more -
Quenching technology of straight seam welded steel pipe
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. Vickers hardness tester c...Read more -
Hardness index of anti-corrosion spiral steel pipe
The ability of metal materials to resist the indentation of the surface of hard objects is called hardness according to different test methods and application ranges. The hardness can be divided into Vickers hardness, Shore hardness, Brinell hardness, Rockwell hardness, microh...Read more -
The problem of uneven thickness of the anti-corrosion coating of the spiral steel pipe and the treatment method
Spiral steel pipes are mainly used as fluid pipes and piling pipes. After the steel pipes are made, if they are used for running water, they will generally be treated with anti-corrosion on the inner or outer surface. The general anti-corrosion includes 3pe anti-corrosion, epo...Read more -
What are the factors that affect the performance of the steel pipeline
Factors that degrade pipe materials or affect their function include pH, soil and water resistivity, abrasion resistance, chloride, sulfate or acid corrosion, fire resistance, crack propagation and oxidation of thermoplastics and electrochemistry of steel corrosion. The above ...Read more -
How to clean the dirt in the steel pipe
There are three ways to clean the substances in the steel pipeline. Internal cleaning method of pipeline 1. Chemical cleaning The chemical cleaning pipeline is to use chemical agents to temporarily transform the pipeline. The temporary pipeline and the circulating pump station...Read more