Spiral steel pipe waste is divided into two types: internal waste and external waste. Internal waste refers to the waste spiral steel pipe found in the foundry or foundry workshop; external waste refers to the waste spiral steel pipe found after delivery, which is usually revealed during mechanical processing, heat treatment or use, and the economic losses caused by it are far greater. Bigger than internal waste. In order to reduce external waste, batch-produced spiral steel pipes are preferably sampled for experimental heat treatment and rough processing before leaving the factory. Potential spiral steel pipe defects can be found in the spiral steel pipe factory as much as possible so that necessary remedial measures can be taken as early as possible. In order to improve the service life of the pipe, spiral pipe manufacturers will process the surface after making it, which is also a step in production. The four methods we commonly use include cleaning, tool rust removal, pickling, and shot blasting.
Spiral welded steel pipes for water supply pipes
The spiral steel pipe welding method is submerged arc welding, forming technology, forward swing intermittent production, unit speed, and welding speed. The unit consists of decoiler, machine, centering device, hydraulic shear, milling and welding machine, disc shear, edge milling machine, plate cleaning equipment, delivery machine, plate edge pre-bending equipment, forming machine, internal welding, external welding, fly It consists of edge removal, slag pouring, repair welding, flat head chamfering, hydraulic inspection, finished product inspection, and oil removal collection.
Spiral seam submerged arc welded steel pipes for fluid transportation are made by double-sided automatic submerged arc welding or single-sided welding. The whole process of submerged arc welding for water spiral steel pipes is as follows: Spiral steel pipe-submerged arc welding principle: Submerged arc welding is the use of Arc heat energy can be used to weld large steel sections, for example.
