The specifications of steel pipe are:, such as 4-point pipe, 6-point pipe, 1-inch pipe, 2-inch pipe and so on.
According to the different model specifications, its wall thickness is different, and the same model specifications of the steel pipe, there will be a variety of wall thickness for consumers to choose. For example, 4 points pipe, wall thickness of 0.9mm, 1.0mm, 1.2mm, 1.5mm, 2.0mm and other models, the thicker the pipe, the higher the strength, the more expensive the price is more expensive, the user needs to buy according to the real.
Purchase of steel pipe method:
1, look at the surface of the steel pipe
Consumers in the purchase of steel pipe, you need to take a close look at the surface of the steel pipe, whether there is a luster, and whether the color distribution is uniform, and also need to touch the wall of the pipe, see whether the wall is smooth and flat. If the color distribution of the steel pipe is not uniform, or the pipe wall is rough, it means that the quality of the steel pipe is not good, and even affect its performance, it is not recommended to buy.
2, look at the steel pipe certificate
All the regular brand factory steel pipe, will be accompanied by the relevant quality inspection certificate, certificate of conformity and factory test report. Consumers in the purchase, you need to ask the businessman to show all the documents of the steel pipe to ensure the quality of the steel pipe, if the businessman can not provide these materials, then the quality of the steel pipe is not guaranteed, it is recommended not to buy.
3, look at the brand of the steel pipe
There are many different brands of steel pipe on the market, consumers in the purchase, it is best to look for high visibility brand purchase. Because the surface appears to be the same steel pipe, the raw materials used in the product are very different, if you choose the poorer raw material production, its performance, quality will be much worse.