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Surface hardening treatment of multi-lev...
The sealing surface of multi-level hard sealing butterfly valve is made of superhard material or sur...
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Essence and advantages of ball valve
In essence, the ball valve is a quarter turn rotary valve, that is, rotate it 90 degrees to fully o...
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Characteristics and channel form of stai...
Stainless steel stop valve is a kind of stop valve, which has high requirements for valve body mater...
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