The method of selecting copper pipe is as follows:
1, first distinguish the advantages and disadvantages of copper fittings, we can observe from the copper fittings themselves, in its outside surface, we can use some relatively sharp things to scrape, then if there is a deep line produced, then it is good copper, because the good copper fittings are produced with more than pure copper, copper extensibility is very good. So this better material is not scored in the military industry production or some more special industry;
2, just now is the outside surface of the copper pipe fittings scratch, we can also scratch the surface of the copper pipe fittings inside, and then the two will be compared with each other, if the effect is the same, it shows that the copper pipe fittings of the overall material is good, and vice versa, may be copper pipe fittings itself is not pure texture;
3, due to the copper fittings of their own properties, so when we force to fold the copper fittings, in fact, relatively easy to bend, and vice versa, it can be judged that the material is not pure copper or copper itself is not good.
