Knowledge

20Aug, 2025

27.1. What is the function of feeding uncoiling?
The function of feeding and uncoiling is to make the steel strip rotate smoothly under the action of the uncoiler, and the steel strip can be smoothly sent to the next process. The
18Aug, 2025

27. What are the processes in the production of spiral welded pipes?
Including raw material preparation, feeding and uncoiling, leveling, shear butt welding, edge cutting, delivery, pre-forming, internal welding, external welding, pipe cutting, prel
15Aug, 2025

26. How is the production of spiral welded pipe different?
Spiral welded pipes are steel plates or strips that are pre-bent and continuously bent on a forming machine to form a tube with spiral seams. Spiral welded pipe has the characteris
15Aug, 2025

25. What equipment is needed for spiral welded pipes? What is the principle o...
The production equipment of spiral welded pipes is usually composed of uncoilers, leveling machines, shears, disc shears, conveyors, guide plates, formers, internal and external we
13Aug, 2025

24. What raw materials are needed for spiral welded pipes?
Strip coil: As the main raw material for spiral seam submerged arc welded pipes, strip steel coils need to undergo strict physical and chemical inspections to ensure that their qua
13Aug, 2025

23. What is spiral welded pipe? Are there any other names?
Spiral welded pipe, also known as spiral seam submerged arc welded pipe or spiral pipe, is a type of metal pipe with spiral seams welded using the submerged arc welding process. It
11Aug, 2025

22. What problems are likely to occur in the production of high-frequency wel...
22.1. R Angle Cracking 22.1.1. Material selection and quality control Choose high-quality materials: ensure that the selected square tube materials are of high quality, and avoid u
11Aug, 2025

21. What is the difference between high-frequency welded square pipe and roun...
21.1. Distinction of production processes Production process of square rectangular welded pipe: raw material preparation, feeding and uncoiling, shearing butt welding, material sto
07Aug, 2025

20. What is high-frequency welded square pipe? Are there any other names?
High-frequency welded round tubes are round tubes made by welding metal materials (mainly steel plates) together using the resistive thermal effect of high-frequency currents, and
06Aug, 2025

19. What problems are likely to occur in the production of high-frequency wel...
19.1. Welding quality problems 19.1.1. Cracking of weld joints: Causes: Stress concentration at the welded joint or poor welding quality, such as improper welding heat control, mis
05Aug, 2025

18. Which step is the most important step in the production process of high-f...
The most important process in the production process of high-frequency welded round tubes is high-frequency welding. There are three reasons, first, the welding quality directly af
04Aug, 2025

3. Special chapter on the manufacture of high-frequency welded round tubes17....
High-frequency welded round tubes are round tubes made by welding metal materials, mainly steel plates, together using the resistive thermal effect of high-frequency currents. In a

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