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Stainless steel pipe welding process method A
High-frequency induction welding In high-frequency contact welding and high-frequency induction welding, the equipment that provides current and the equipment that provides squeezing force are independent of each other. In addition, both methods can use a magnetic rod, which is a soft magnetic el...Read more -
Production process of spiral steel pipe
(1) Raw materials are strip steel coils, welding wires, and fluxes. Strict physical and chemical tests are required before investment. (2) Butt joint of strip steel head and tail, adopt single wire or double wire submerged arc welding, after coiling into steel pipe, adopt automatic submerged arc ...Read more -
Hot rolling process in stainless steel pipe fittings
Simply put, the process of rolling steel material after heating it to a temperature above the recrystallization temperature is called hot rolling. And below the recrystallization temperature, the process including rolling at room temperature is known as cold rolling. Hot rolled steel has good pla...Read more -
Introduction to water supply steel pipe
1. Aluminum-plastic composite pipe The aluminum-plastic composite pipe is the first water supply pipe to replace the cast iron pipe. Its basic structure should be five layers, namely plastic, hot melt adhesive, aluminum alloy, hot melt adhesive, and plastic from the inside to the outside. The alu...Read more -
Prevent decarburization of steel pipe surface
The key to resolving the problem of surface decarburization lies in the heat treatment process. Since the decarburization and the oxidation of the steel wire are carried out at the same time, as long as the steel wire is kept in contact with air as little as possible during the heat treatment pro...Read more -
Oil and gas pipeline welding construction technology
1.1 Manual welding with cellulose downward electrode When there is a pipeline with severe hydrogen sulfide corrosion or a pipeline operating in a cold environment, use a low-hydrogen type vertical downward welding electrode. Due to the flexibility of manual welding and the low requirements of wel...Read more -
Winding 3PE anticorrosive steel pipe
3pe anti-corrosive steel pipes are pipes (steel pipes) used in different working environments. To slow down or prevent the pipes from being corroded and deteriorated by the chemical or electrochemical action of the external medium or by the metabolic activities of microorganisms, the outer wall o...Read more -
Protection method for back side of weld seam of argon arc welding of stainless steel pipeline
1. The tube is filled with argon for protection For argon arc welding of stainless steel pipes in petrochemical plant engineering, the method of filling the pipe with argon is generally used to prevent oxidation on the back of the weld. The argon filling methods mainly include argon filling as a ...Read more -
Introduction to Embroidery Removal Technology of Submerged Arc Steel Pipe
1. Cleaning Use solvents and emulsions to clean the surface of the steel to remove oil, grease, dust, smoothing agent, and similar organic matter, but it cannot remove the rust, oxide scale, welding flux, etc. on the surface of the steel, so it is only used as an auxiliary in the defense homework...Read more -
Process characteristics of spiral steel pipe
Spiral steel pipes are mainly used in water supply engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, and urban construction. It is one of the 20 key products developed in my country. For liquid transportation: water supply and drainage. For ...Read more -
Analysis of accidents prone to occur on the heating surface of boiler steel tubes
1. Long-term over-temperature burst tube Over-temperature refers to metal materials operating at temperatures exceeding the rated temperature. The rated temperature refers to the allowable maximum temperature of the steel during the design life, and can also refer to the rated temperature during ...Read more -
Acceptance standards and methods for spiral steel pipes
1. Acceptance principles for spiral steel pipes The quality inspection and acceptance of spiral welded pipes shall be carried out by the supplier’s technical quality supervision department. The supplier must ensure that the delivered spiral welded pipes comply with the requirements of the c...Read more
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