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Galvanized steel pipe welding how to prevent corrosion
Anticorrosion of galvanized steel pipe welding: after surface treatment, thermal spray zinc. If the site cannot be galvanized, you can follow the on-site anti-corrosion method: brush epoxy zinc-rich primer, epoxy mica iron intermediate paint, and polyurethane topcoat. The thickness refers to rele...Read more -
Manufacturing Technology of Large Diameter Longitudinal Submerged Arc Welded Steel Pipes
Large-diameter straight seam submerged arc steel pipes are mainly responsible for the pipeline transportation of marine and land oil and gas, oil and natural gas, coal, and ore pulp. The methods and characteristics of international pipe-making technology, the forming methods of large-diameter lon...Read more -
Straight seam steel pipe derusting method and inspection steps
Straight seam steel pipe is a steel pipe whose weld seam is parallel to the longitudinal direction of the steel pipe. It is usually divided into metric electric welded steel pipe, electric welded thin-walled pipe, transformer cooling oil pipe and so on. The production process of straight seam wel...Read more -
Is there any difference between HFW steel pipe and ERW steel pipe
The difference between ERW (straight seam electric resistance welded) steel pipe and HFW (high frequency welded) steel pipe is mainly the principle. As the name implies, resistance welding is a method in which pressure is applied through electrodes after the weldment is combined, and the resistan...Read more -
What is the suitable temperature for welding straight seam steel pipe
Welding, also known as welding, is a manufacturing process and technology that can join metal or other thermoplastic composite materials such as plastics by applying heat, high temperature, or pressure. There are three welding methods: 1. Welding. The workpiece is heated to form a molten pool. Af...Read more -
Defects that are prone to occur in the welding zone of spiral steel pipes
The defects that are easy to occur in the welding area of the spiral steel pipe include air holes, thermal cracks, and undercuts. Spiral steel pipe weld porosity not only affects the tightness of the pipe weld, causing pipeline leakage but also becomes a corrosion induction point, seriously reduc...Read more