NEWS

01-06

2022

The development of copper valve In China

In the early 1980s, my country developed copper valves by introducing and absorbing new technology, which changed the history of long-term use of cast iron valves in China. In the manufacturing process, the sand casting process was initially used, and in the early 1990s, it was changed to the forging process. By the beginning of the 21st century, China has developed into the world's copper valve manufacturing center.

01-06

2022

What is the difference between copper, brass, bronze and cupronickel?

An alloy made from pure copper as the base, with one or several other elements. Pure copper is purplish-red and also known as bronze.