Balance valve is a special function of the valve, it has a good flow characteristics, valve opening degree indication, opening degree locking device and for flow determination of the pressure measu...
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...
“Golden beach, blue sea, on the coast, we enjoy the sand and water. Into the mountains and rivers, dancing with nature. Travel group building, find the heart’s yearning”
In this f...
Valve selection principle
(1)Safety and reliability. Petrochemical, power station, metallurgy and other industries production requirements for continuous, stable, long-cycle operation. Therefore, t...
The initial stage of the valve industry (1949-1959)
01Organize to serve the recovery of the national economy
The period from 1949 to 1952 was the period of my country’s national economic reco...
The continuous development of the valve industry (1967-1978)
01 Industry development is affected
From 1967 to 1978, due to the great changes in the social environment, the development of the valve ...
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