Sand casting: Sand casting commonly used in the valve industry can also be divided into various types of sand such as wet sand, dry sand, water glass sand and furan resin no-bake sand according to ...
Valves are critical components for controlling the flow of fluids and gases in a variety of industrial applications. The most commonly used valve types include butterfly valves, check valves, and g...
In the 30s, the butterfly valve was invented in United States, introduced to the Japan in the 50s, and was widely used in Japan in the 60s, and it was promoted in China after the 70s. At present, b...
1. The stomata
This is a small cavity formed by the gas that the metal solidification process does not escape inside the metal. Its inner wall is smooth and contains gas, which has a high reflectiv...
The advantages and uses of the electric butterfly valve have:
Electric butterfly valve is a very common pipeline flow regulation device, which is widely used and involves many fields, such as the ...
There are often friends who do not understand the relationship between the specifications of “DN”, “Φ” and “”". Today, I will summarize the relationship between ...