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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 -
A brief introduction to the die-casting techniques and reagent comparison of straight seam steel pipes
Straight seam steel pipe products are widely used in water supply engineering, the petrochemical industry, the chemical industry, the electric power industry, agricultural irrigation, and urban construction. They are 20 key products developed by our country. Straight seam steel pipe is used for l...Read more -
How to cool the large diameter steel pipe after the quenching process
The steel pipe is used to transport fluid and powder, exchange heat and make mechanical parts and containers, what’s more, it’s a kind of economical steel. Using steel pipes to make building structure grids, pillars, and mechanical supports can reduce weight and save 20-40% of metal, ...Read more -
What needs to be done before the 3PE anti-corrosion steel pipe is buried
Before the 3PE anti-corrosion steel pipe is buried, it is necessary to clean up the surrounding environment first. The measuring and setting-out personnel must make technical disclosures to the commanders and mechanical operators participating in the cleaning work. At least one line of defense pe...Read more -
Large-diameter steel pipe connection method and method for improving the rust resistance
Connection method of large diameter steel pipe: 1. Large-diameter steel pipe heat-shrinkable fittings: When connecting pipes, on-site welding can be used. Welding points cannot be handled at the construction site, and heat-shrinkable pipe fittings are used as supplementary seals, which shrink und...Read more -
The quality process and characteristic use of large-diameter flanges
The large-diameter steel flange is a kind of flange, which is widely used and promoted in the machinery industry and has been well-received and favored by users. Large-diameter flanges are widely used, and the range of use is determined according to different characteristics. They are mostly used...Read more