Spiral steel tube units are selected on-line continuous review to ensure the weld quality of the weld, which is another major feature of spiral steel pipe production different from spiral pipe production. Continue to review the monitoring of defects in welding, the smoothness of welding quality, and the assurance of welding grade. Due to the constraints of production techniques, it is extremely difficult to complete the continuous uninterrupted inspection of the spiral tube. This will increase the probability of welding hazard and quality problems, and even affect the full operational reliability of future pipeline operations.
As a branch of the traditional ssaw steel pipe industry, the spiral pipe is the first to satisfy the thermal and petroleum industry’s central materials. It has a strong professionalism, but the quantity is necessary to be small. It is difficult to scale up the production and even the company’s benefits. Low level features. However, following the upgrading of industrial structures, the requirements for basic materials for downstream equipment construction are getting higher and higher, and the added value of commodities is getting higher and higher. Spiral steel pipes have broad room for growth.
The welding pattern of spiral steel pipe and spiral pipe is different, but there are many T-weld welds in the spiral pipe unpreventably, so the probability of welding error is greatly improved, and the welding residual stress at T-weld is large, welding the metal is in a three-way stress condition, adding to the possibility of cracking. Seamless steel tubes can also be judged according to their size and length.
The share of spiral tubes in spiral steel pipes has been continuously between 42% and 45% in recent years, and the welded pipes have a rising trend. Compared with welded spiral steel pipe, spiral steel pipe is highly reliable in material reliability and type, especially in the production of thick wall and alloy steel. The strength of the spiral steel pipe is higher than that of the spiral pipe, and it is possible to produce a welded pipe with a large diameter by using a narrow blank, and it is also possible to produce a welded pipe having a different pipe diameter by using the same width of the blank.
Spiral steel pipe details on the construction skills of spiral steel pipe is not beautiful, where a good spiral steel pipe company will be careful in the production, there will be no contradictions, etc., on the other hand, hit the metal spiral steel pipe, if The sound is very brittle and the echo is not very turbid. If the name is a spiral steel pipe, it is the latest one instead of the scrap steel pipe.
Imagine the production of new-structured spiral steel pipes, such as double-layer spiral steel pipes, which are welded into a double-layer pipe with a thickness of half the pipe wall, which is not only stronger than a single-layer pipe of the same thickness, and does not exhibit brittle damage; The process is simplified and convenient, and both the processing plant and the incident site can be constructed. The technology is relatively simple and does not require serious equipment and equipment.