Carbon steel spiral steel pipe is a common material, including Q235A, Q235B, Q355B, Q355C, Q355D and other materials.
However, we usually use Q235B and Q355B materials. Q235B is the main material for drainage pipes, and Q355B is the auxiliary material.
So without explanation, we think the carbon steel spiral steel pipe for drainage is made of Q235B.
The carbon steel spiral steel pipe for drainage can now be produced with a diameter of 219-4020 mm and a wall thickness of 4-25 mm. The submerged arc welding technology is adopted for the weld, which has guaranteed quality and high production efficiency, so it has been widely used.
The connection method is generally welding. Of course, there are flange connection and socket connection, but the cost is high.
The carbon steel spiral steel pipe used for drainage and the anti-corrosion technology can ensure that the pipeline will not be corroded by water for 20-30 years, and the technology is quite mature.
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The main factors affecting the internal hole finish of cold-drawn seamless steel pipe are as follows:
