Spiral steel pipes are completely called spiral welded steel pipes. It is a spiral steel pipe that uses automatic double-wire submerged arc welding technology, with strip steel coils as raw materials, often using warm extrusion molding and double-wire double-sided automatic submerged arc welding technology, with spiral welds on the surface, called spiral welded pipes.
Threaded steel pipe refers to the outer surface of the steel pipe pressed by embossing equipment. Threaded pipes, also known as low-rib pipes, mainly rely on external rib pipes (rib coefficient is 2-3) to expand the heat exchange area and are usually used when the heat transfer coefficient inside the pipe is more than 1 times higher than that outside the pipe.

Threaded steel pipes have good connectivity and sealing properties, so they are widely used in pipeline systems in industries such as petroleum, chemical industry, and natural gas, as well as in connection and fixing parts in fields such as construction and machinery.
The spiral pipe, due to its unique spiral structure, plays an important role in drainage, sewage, ventilation, and other occasions that require flexible connection and bending performance.

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