The invention relates to a hydraulic drive gate valve for welding type high-temperature resistant bellows, in particular to a hydraulic drive gate valve.
2
一种气动的焊接式耐高温波纹管闸阀，涉及一种气动的闸阀。
The invention relates to a pneumatic gate valve for welding type high-temperature resistant bellows, in particular to a pneumatic gate valve.
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