Due to the special properties and advantages of metal threading pipe, the current use is more and more extensive, the common metal threading pipe are JDG pipe and KBG pipe. Metal threading pipe surface smooth, fluid resistance is very small, not easy to produce dirt, not easy to produce bacteria, the coefficient of thermal expansion is very low, in the case of sudden cold and hot temperature is not easy to deformation, as long as the installation of the traditional way to connect the line can be threaded even. Metal threading pipe surface layer is a good solution to the waterway transportation, buried, all kinds of acid and alkali high-pressure use, a long service life. In the choice of metal line pipe we also need to be able to basic judgment, to determine whether the metal line pipe is qualified.

How to judge whether the metal threading pipe is qualified?

1, you can judge whether it is qualified by observing its rigid density, the higher the rigid density indicates that the material inside the less adulterated substances, the better the quality, you can buy.

Metal wire pipe

2, if there is a cross-section of steel pipe, we can judge by observing its cross-section, in general, the cross-section of unqualified products is oval.

3, the diameter of the metal threading pipe is almost uniform, the amount of variation is not very large.

This article is edited by China Steel Pipe.