The blank used for welded steel pipes is steel or strip. The steel plate or strip is bent into a circular shape, a square shape, etc. by a manufacturing process, and then welded to form a welded steel pipe having a seam on the surface.
The casting has higher precision and surface finish, which greatly reduces the machining amount of the casting, greatly reduces labor intensity, and saves electricity and metal materials. Because of its higher internal and external quality.
The magnesium alloy sheet has good heat dissipation capability and can prevent electromagnetic waves. Magnesium alloy sheets are used in electrical products to effectively dissipate internal heat to the outside.