There are three ways to judge whether brass pipes are good or bad

1: To observe the

The quality of copper tube can be judged by observation, we first look at the color of copper tube, generally divided into copper, brass. Under normal circumstances, the color of copper pipe is a single color, such as copper pipe, the general color red basically can be concluded that it is good, look carefully at the doping of color, and even the appearance of impurities, basically concluded that this copper has impurities, belongs to the inferior copper pipe.

2: Test

Good quality copper pipe must be made of pure copper, copper metal has a characteristic: good ductility. A good copper pipe will have a dark line. This dark line does not mean it is defective, but rather that it is very ductile.

When buying, you can also draw a line inside the copper pipe, if the inner wall and the outer wall are the same, it shows that the overall quality of the copper pipe is better. If the inner and outer walls are markedly different, be careful that the copper may contain some iron.

3: The tensile

After the appearance and simple test are passed, the next inspection procedure is stretching. Copper tube processing molding, mainly divided into hard, semi-hard, soft three kinds, different forms, showing the flexibility is not the same you only need to stretch the copper with a little force. Brass tubes of good quality are slightly deformed, very hard, or not easily deformed. Basically can conclude that the quality of copper pipe is not good.