Things to note when purchasing ASTM A252 straight seam steel pipes

　　ASTM A252 LSAW Steel Pipe is the standard specification for welded and seamless steel pipe piles. It covers the nominal wall thickness of cylinder shape steel pipe, rectangular pipe is not included. These round pipes are used for piling purposes, playing a permanent role in load carrying and bearing the pressure. Furthermore, to act as a tank shell to fill with the concrete piles at the sight of the project.

       First, purchasing needs to understand the types of steel pipes:

　　1. By type: straight seam steel pipe, seamless steel pipe, spiral steel pipe, etc.

　　2. Sectional shape classification of straight seam steel pipes: square pipe, rectangular pipe, elliptical pipe, flat elliptical pipe, semi-circular pipe, etc.

　　Second, a few points to note:

　　In the early days of the steel pipe industry, there were many deceptive tricks, but now people are more proficient in this industry, so those tricks can be identified with our naked eyes.

　　Secondly, there are a few points to note: In the early days of the steel pipe industry, there were many deceptive tricks, but now people are more aware of the industry, so those tricks can be identified with our naked eyes.

　　1. Whether the wall thickness of ASTM A252 straight seam steel pipe meets the standard is not enough to use the gate method. If you use a hammer to cover the mouth end of the steel pipe, it will look thicker, but when measured with an instrument, the original shape will be apparent.

　　2. Use a ASTM A252 straight seam steel pipe as a seamless steel pipe. There are only a few longitudinal welds in the straight seam. Use a machine to polish the entire steel pipe, commonly known as polishing. It will look like there is no gap to act as a seamless steel pipe.

　　3. Nowadays, there is a more clever method which is seamless steel pipe. Seamless steel pipe is also a thermally expanded steel pipe. After the expansion, there is lead powder inside, and there are burn marks on the outside, but the weld seam cannot be seen. Many larger steel pipes use this kind of steel pipe to act as seamless and sell it to make big profits.

　　4. Girth welded straight seam steel pipes use polishing to produce seamless steel pipes and straight seam steel pipes.

　　ASTM A252 straight seam steel pipe sizes up to 100 inches, thickness up to SCH 160, types are seamless or welded ERW, LSAW, SSAW.  If you have any questions about steel pipes, you can send an email to our 24-hour service email: [email protected] or call: 0086-317-5298199.