Production and technical features of galvanized pipe
The sealing failure of galvanized pipe sealing joints is mainly manifested in leakage. In the pipeline system and equipment of various industries, the sealing failure of flange joint is light, which can cause a lot of waste of energy and raw materials. If the cost of labor and materials becomes more severe, it will lead to the disuse of equipment, strikes, casualties and serious environmental pollution. Therefore, modern petroleum, chemical, petrochemical, atomic energy, aerospace and other industries put forward higher requirements for pipeline equipment seal. Flange joint is a detachable connector, and it is a product with high sealing requirement. The key is in the sealing material, the quality of sealing materials, directly related to the quality of flange products. It can be said that although the gasket is small, it is related to the sealing failure of the flange.
Generally, the load-bearing components are relatively large, in engineering is not a simple deformation, the key is the thickness of the problem. On the other hand, the inside and outside diameters are not a problem. The worst part is their thickness. A little too thin will be simple deformation, of course, in the manufacturing process will not appear in general deformation problems, processing through the machine tool will not occur, but in the use of the process is dangerous.
The middle plate is cut into strips, and then rolled into a circle. Then the waterline, bolt hole and so on are processed. Generally speaking, the maximum can be 7 meters. These flanges have good quality assurance. Because the material is medium plate, the density is good. Raw materials include carbon steel, stainless steel, alloy steel and so on.
Production technology features: the products are full of welded products without threads. The production process includes three types: forging, rolling and splicing. First, the middle plate is cut into a suitable note. The length of the note is based on the standard. Then the coiler is used to make a circle, and the joint is soldered by welding rod. X-ray spectrum inspection is carried out at the joint. Then the press is used to flatten it, then the lathe is used to process water lines, chamfering and other processes, and finally the indexing plate cooperation drilling machine is used to drill the bolt hole.
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