The production process of spiral steel pipe is roughly as follows
● Spiral steel pipe raw materials are strip coils, welding wire, and flux.
● Before forming, the strip undergoes leveling, edge trimming, edge planing, surface cleaning and conveying, and pre-bending treatment.
● The welding seam gap control device is adopted to ensure that the welding seam gap meets the welding requirements, and the pipe diameter, the amount of misalignment and the welding seam gap are all strictly controlled.
● After cutting into a single steel pipe, the first three steel pipes of each batch shall be subject to a strict first inspection system to check the mechanical properties, chemical composition, fusion status of the weld, the surface quality of the steel pipe and the non-destructive inspection to ensure that the pipe manufacturing process is qualified. Before it can be officially put into production.
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