Q235B spiral tube

Q235B spiral tube is a material commonly used in spiral tubes. It is a spiral seam steel pipe welded by automatic double-wire double-sided submerged arc welding process, which is made of strip steel coil as raw material, extruded at regular temperature.

Commonly used standards for spiral steel pipes are generally divided into: SY/T5037-2000 (ministry standard, also known as spiral seam submerged arc welded steel pipes for ordinary fluid transportation pipelines), GB/T9711.1-1997 (national standard, also known as oil and gas industry transportation steel pipes) The first part of delivery technical conditions: A-grade steel pipe (GB/T9711.2 B-grade steel pipe with strict requirements), API-5L (American Petroleum Institute, also called pipeline steel pipe; which is divided into two levels: PSL1 and PSL2), SY/T5040-92 (spiral submerged arc welded steel pipe for piles).

Q235B spiral steel pipe needs to do hydrostatic test, and the pressure stabilization time during hydrostatic test:
When D<508, the test pressure should be kept for no less than 5 seconds;
D≥508 The test pressure should be kept for no less than 10 seconds.

Q235B spiral steel pipe is widely used in water supply engineering, petrochemical industry, electric power industry, urban construction, chemical industry, agricultural irrigation and other fields, providing good resources for construction and transportation.
According to its own structural characteristics, there are two main purposes.
One is to transport liquids, such as water supply and drainage, and it can also be used to transport chemical substances such as gas and petroleum.
Second, it can be used as pile pipes, bridges and other structures, and can also be used for roads, docks, and building structure pipes.

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