Gate valve is a kind of valve to control the fluid, it is widely used in the industry. The gate valve controls the flow of fluid by controlling the opening and closing of the valve. Gate valve acco...
The butterfly valve was invented in the United States in the 1930s. It was introduced to Japan in the 1950s and was not widely used in Japan until the 1960s. It was not popularized in my country un...
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...
A butterfly valve is a type of quarter-turn valve that controls the flow of a product in a pipeline.
Butterfly valves are usually grouped into two types: lug-style and wafer-style. These me...
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