Knowledge

01May, 2024

Galvanized steel pipe acid washing and passivation
The chemical skilled method is immersed in the tank, and the skilled tank is made of steel plate, and the inner wall is covered with polyvinyl chloride or polyethylene. Use 12-15%n
01May, 2024

Good galvanized steel pipe quality treatment
When the application characteristics of galvanized steel pipes are different, the aluminum alloy composition after light thermal treatment is different, so the production process o
01May, 2024

Analyze the cause of abrasion resistance of galvanized steel pipe
The wear-resistant layer of wear-resistant alloy tube is different, and generally controlled between 3-120mm, so its hardness level is also different. Compared with ordinary alloy
01May, 2024

Classification and production process of galvanized pipes
Galvanized pipes are divided into heat -galvanized steel pipes and cold -galvanized steel pipes, of which cold galvanized steel pipes have been gradually eliminated. 1. Hot -dip ga
30Apr, 2024

What should I pay attention to when the spiral steel pipe needs to be used?
The installation and use of the spiral steel pipe has strict technical requirements. It should be carried out according to the actual situation, and it must also be guaranteed and
30Apr, 2024

What do you need to pay attention to when the production of spiral steel pipes
Q345B spiral tube is prone to cracks in thermal treatment cooling. So, what aspects should spiral pipe manufacturers pay attention to the emergence of cracks in the production proc
30Apr, 2024

What can determine the quality of large -caliber spiral steel pipes
In recent years, with the continuous upgrading of large -caliber spiral steel pipes (SSAW) welding processes, its processing quality and process performance will be significantly i
30Apr, 2024

Spiral steel tube spiral welding pipe
The strength of the spiral tube is generally higher than that of the straight seam welded pipe. It can use a welded pipe with a larger diameter of the billet material, and can also
30Apr, 2024

How to distinguish the quality of bridge spiral steel pipes
The hot -rolled tape is rolled as a tube blank The pile is used as a tube of the hot steel band with a spiral welded steel pipe. It is often made of temperature and spiral. It is m
29Apr, 2024

Common defects in the welding area of spiral steel pipes
1. Bubble Bubbles mostly occur in the middle of the welded trail, and the hydrogen is still hidden inside the weld metal in the form of air bubbles. The main reason is that the wel
29Apr, 2024

The development history of seamless steel pipes
The seamless steel pipe is made of a hair tube with a steel ingot or solid tube, and then made by hot rolling, cold rolling or cold. The seamless steel pipe has a hollow section an
29Apr, 2024

Production of straight welding pipes
The straight seam welded pipe is now used in many areas, and let's take a look at how it was manufactured. 1. Steel plate probe: The buried arc welded large diameter tube conne

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