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Straight seam steel pipe classification and welded steel pipe use guide
Straight seam steel pipe refers to a welded steel pipe with one weld in the longitudinal direction of the pipe body. GB/9711.1 stipulates that when the diameter is greater than 914.4, the straight seam steel pipe can have two straight welds, and the angle between the welds is ...Read more -
Anti-corrosion process of anti-corrosion steel pipes
In recent years, the demand for steel pipe insulation in various industries in China has increased. The production technology of domestic steel pipe anti-corrosion factories has been relatively mature, and various anti-corrosion products can be produced. Among them, 3PE anti-c...Read more -
Geometric Properties of Sections of Large Diameter Steel Pipes
(1) Its node connection is suitable for direct welding, which does not need to pass through the gusset plate or other connectors, which saves labor and materials. (2) When necessary, concrete can also be poured into the tube to form a composite member. (3) The geometric charac...Read more -
How to judge the quality of spiral steel pipes
1. From the surface of the spiral steel pipe to see whether the production process of the spiral steel pipe is exquisite. Generally, research and analysis of spiral steel are required, and the section of fake and inferior spiral steel pipes is oval. The reason is that the manu...Read more -
Technical requirements for steel bending pipes and analysis of factors affecting the quality of steel bending pipes
Steel bending pipes are produced step by step, and then made into finished products. In the whole production process, because the pipes are required to be curved, and the bending of the pipes requires some technology, the degree of bending is also different. Then What are the ...Read more -
Deviation and Forming Method of Large Diameter Steel Pipe in Production
Deviation of large-diameter steel pipes in production: common large-diameter steel pipe size range: outer diameter: 114mm-1440mm wall thickness: 4mm-30mm. Length: according to customer requirements can be made in fixed length or indefinite length. Large-diameter steel pipes ar...Read more -
The difference between hot-rolled seamless steel pipe and cold-rolled seamless steel pipe
In terms of processing technology: hot rolling is hot processing, and cold drawing is cold processing. Hot rolling is rolling above the recrystallization temperature, and cold rolling is rolling below the recrystallization temperature; Distinguish from the appearance: the surf...Read more -
Execution standard of spiral welded steel pipes
Spiral seam submerged arc welded steel pipe SY5036-83 for pressurized fluid transportation is mainly used for oil and natural gas pipelines; spiral seam high frequency welded steel pipe SY5038-83 for pressurized fluid transportation is welded by high-frequency lap welding. Spi...Read more -
Why non-metallic pipes or stainless steel pipes cannot be used as long-distance pipelines
The transportation of oil and gas through pipelines requires a certain pressure. The longer the pipeline, the higher the pressure required for oil and gas transportation. The pressure of long-distance pipelines is generally between a few MPa and more than ten MPa. Therefore, t...Read more