Product Information
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Stages and standard parameters of mechanical expansion process for large diameter steel pipes
The stages of the mechanical expansion process of large-diameter steel pipes: The steel plate is first pressed into a U shape in the forming die, and then pressed into an O shape, and then internal and external submerged arc welding is performed. After welding, the diameter is...Read more -
Maintenance method of large diameter straight seam steel pipe
In the process of manufacturing straight seam steel pipes, straight seam steel pipe manufacturers need to have very good control of the extrusion force. This is because, during the welding process, when the temperature of the edges of the two tube embryos reaches the welding t...Read more -
How to solve the phenomenon of spiral steel pipe “goose head bend”
If the large-diameter spiral steel pipe is processed to a certain length, there must be bending, which is a phenomenon and situation that is often encountered in steel pipes. The large-diameter spiral steel pipe is commonly called “goose head bend” due to the uneve...Read more -
Surface treatment of thick-wall straight seam steel pipe
The uniformity of the pipe wall of the thick-walled straight seam steel pipe will directly affect the post-processing parts. The pipe wall of the thick-walled straight seam steel pipe cannot be controlled, and the overall steel pipe cannot be strictly controlled. Small and med...Read more -
What are the classifications of the coating methods of large-diameter water-conveying plastic-coated steel pipes
The coating methods of large-diameter water-conveying plastic-coated steel pipe plastic-coating equipment are divided into two categories: simultaneous internal coating and external coating, and separate internal coating and external coating. Process coating methods are also d...Read more -
Technical characteristics of spiral steel pipe
Spiral steel pipes are mainly used in tap water engineering, the petrochemical industry, the chemical industry, the electric power industry, agricultural irrigation, and urban construction, and are twenty key products developed. For liquid transportation: water supply, drainag...Read more -
Anti-corrosion Countermeasures for Oil Casing
1. First of all, do a good job of water quality standards, and strictly monitor and manage water quality. Implement cleaning and separate injection, strengthen the cleaning of the main water pipeline, ensure that the water quality in the station and the bottom of the well meet...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 -
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