Straight seam steel pipe production temperature and purchasing precautions

First, straight seam steel pipe production temperature:
In the process of producing straight seam steel pipes, the temperature must be strictly controlled to ensure the reliability of welding. If the temperature is too low, the welding position may not reach the temperature required for welding. When most of the metal structures are still solid, it is difficult for the metals at both ends to penetrate each other and combine. When the temperature is too high, there are many metals in the molten state at the welding position. The texture of these parts is very soft, and some fluidity may carry molten droplets. When such metal drips, there is also not enough metal to penetrate each other. During welding, there will be some unevenness with the weld to form a molten hole. Therefore, the integrated sewage treatment equipment manufacturer reminds us that the temperature must be strictly controlled during the production process of straight seam welded pipes. Regular manufacturers have very good control technology, so they can achieve the temperature control requirements during the production process to ensure the product, so we need to buy straight seam welded pipes from regular manufacturers.

Second, the matters needing attention in purchasing straight seam steel pipes:
The purchasing industry should be relatively lucrative, but it is quite difficult to do. They also bear more hardships. Many materials have never been seen before after the project, and they also need to be studied and researched. Here are some points that should be paid attention to when purchasing straight seam steel pipes.
1. You need to understand the types of steel pipes when purchasing:
① According to the type: straight seam steel pipe, seamless steel pipe, spiral steel pipe, etc.
② Classification of the cross-sectional shape of straight seam steel pipes: square pipe, rectangular pipe, elliptical pipe, flat elliptical pipe, semicircular pipe, etc.
2. Some points to note:
In the early days of the steel pipe industry, there were many tricks to deceive people, but now people are more proficient in this industry, so those means can be identified with our naked eyes.
① If the wall thickness of the steel pipe is not enough, use the gate means. The mouth of the steel pipe is hammered with a shield to make it look thicker, but it will be exposed when measured with an instrument.
②Use straight seams as seamless steel pipes. There are relatively few straight seams, only one longitudinal weld. Use a machine to grind the entire steel pipe, commonly known as polishing, so that it looks like there is no gap and acts as seamless.
③Now there is another more sophisticated method, which is seamless steel pipes. Seamless steel pipes are also hot-expanded steel pipes. After expansion, there is a lead powder inside and burn marks on the outside, and the welds cannot be seen. Many larger steel pipes use this kind of steel pipe as seamless to sell, seeking large profits.
④Girth weld straight seam steel pipes use polishing to replace seamless steel pipes and straight seam steel pipes.