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What should be done at the end of cooling large diameter steel pipes
(1) When the cooling of the large diameter steel pipe ends, that is, when the temperatures of the surface layer and the core are all consistent, the elastic deformation of the surface layer and the core will all disappear and return to the original state. Although instantaneous thermal stress is ...Read more -
Technical requirements for steel bending pipe and analysis of factors affecting elbow quality
Steel bending pipes are produced step by step and then made into finished products. During the entire production process, there are requirements that the pipes must be bent. In addition, the bending of the pipes requires certain techniques, and the degree of bending is also different. So What are...Read more -
Technical characteristics of double-sided submerged arc welded spiral steel pipe
1. During the forming process of the steel pipe, the deformation of the steel plate is uniform, the residual stress is small, and there is no scratch on the surface. The processed steel pipe has greater flexibility in the diameter and wall thickness of the steel pipe size range, especially in the...Read more -
Significance of oil casing heat treatment process
In addition to being used for oil extraction, the emergence of oil casing can also be used as a pipeline for transporting raw materials. To enhance the quality of the oil casing, every link in the production process is particularly important, especially the temperature control during the period m...Read more -
Straight seam steel pipes de-rusting technology and forming technology introduction
Straight seam steel pipe de-rusting technology: In the anticorrosion construction process of oil and gas pipelines, the surface treatment of straight seam steel pipe is the key factor in determining the anti-corrosion service life of the pipeline, and it is the premise of whether the anticorrosio...Read more -
A106b seamless steel pipe manufacturing method
According to different production methods, it can be divided into hot-rolled tubes, cold-rolled tubes, cold-drawn tubes, extruded tubes, etc. 1.1. Hot-rolled seamless steel pipes are generally produced on automatic pipe rolling units. After checking and removing surface defects, the solid tube bl...Read more