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What environments are large-diameter steel pipes suitable for
1. Petrochemical: Crude oil, refined oil, petrochemical raw material, and finished product delivery pipes and oilfield pipe network. 2. Natural gas: submarine and onshore long-distance pipelines; gas pipelines at gas receiving stations; gas fields and urban natural gas pipeline networks. 3. Coal:...Read more -
Cooling form and construction introduction of large-diameter steel pipe
Cooling form of large diameter steel pipe: Large-diameter steel pipes are steel pipes with an outer diameter of 1000MM or more. Large-diameter seamless steel pipes are made of steel ingots or solid tube blanks that are perforated into capillaries, and then hot-rolled, cold-rolled, or cold-drawn. ...Read more -
The role of heat treatment of stainless steel pipe fittings
After stainless steel pipe fittings are processed by forming, welding and other processes, the molecular structure, magnetic properties, and physical properties of the metal have changed. Through the atmosphere protection solid solution process, the corrosion resistance affected after processing ...Read more -
Heating requirements for spiral steel pipes
Before the steel is hot rolled, heating the raw material not only improves the plasticity of the metal, reduces the deformation force, but also facilitates rolling. In addition, during the heating process of steel, some structural defects and stress caused by Tao ingots can also be eliminated for...Read more -
How to detect the corrosion performance of steel flanges
The use of steel flanges in industrial structural parts is mainly to improve the connection and keep the pipelines sealed without leakage. However, many steel flanges will corrode and age after being used for a period of time, thus losing their tightness. Therefore, it is very necessary to conduc...Read more -
Diameter expansion technology and detection method of straight seam steel pipe
Expanding technology of straight seam steel pipe: 1. Preliminary rounding stage: the fan-shaped blocks are opened until all the fan-shaped blocks touch the inner wall of the steel pipe. At this time, the radius of each point in the inner tube of the steel pipe within the step range is almost the ...Read more