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The most important parameter in the cathodic protection of oil well casing is the penetration depth of the protection current and its magnitude, which depend on the geological structure and the resist...

With the rapid development of the petroleum industry, serious corrosion of oil well casings, buried pipelines, and storage tank bottom plates in oil fields, especially oil well casings, has severely a...

The method of preventing and reducing welding deformation needs to consider the welding process design to overcome the changes in the heat and cold cycle during the welding process. The shrinkage cann...

The sizing of high-frequency straight seam welded pipes (ERW welded pipe) refers to the rolling of welded pipes after welding by rollers of a specific pass, and the round or special-shaped pipes of ir...

Because the multi-wire submerged arc welding of longitudinally welded pipes has the characteristics of large undercooling and fast welding speed, the equilibrium state is basically eliminated. If the ...

Welding heat-affected zone（HAZ) is different from welding seam. Welding seam guarantees performance requirements through chemical composition adjustment, redistribution and proper welding process, whi...

The production process of straight seam steel pipes is relatively simple, and the main content of the production process is high-frequency welded straight seam steel pipes (ERW) and submerged arc weld...

The difference between carbon steel seamless pipe and stainless steel seamless pipe mainly refers to the difference in design rules between stainless steel and carbon steel, which means that the desig...

"Ordering" is the beginning of cooperation between the supplier and the buyer. In order for the buyer to obtain steel pipes that meet the requirements for use, and for the supplier to produce steel pi...

ERW Pipe Meaning: ERW is the abbreviation of Electric Resistance Welding. The ERW pipe often referred to in the steel pipe industry refers to electric resistance welded pipe. The ERW welded pipe p...