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??? ????? ????? ?????? ??????? ??????? 2012-03-19
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1? ?????? ?????? ?????? ?? API602 MSS-S
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????? ???????? 2012-03-12
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????? ??? ????? ????? ???? ???????? 2012-03-07
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?????? ?? ???? ??? ????? ?????? ... 2012-02-27
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The introduction of plug valve 2012-02-23
Plug valves are valves with cylindrical or conically-tapered "plugs" which can be rotated inside the valve body to control flow through the valve. The plugs in plug valves have one or more hollow pass
Vacuum gate valve 2012-02-01
The invention provides a vacuum gate valve for closing off an opening. The vacuum gate valve can have a valve plate that can be turned so that the alignment of the valve plate will adapt to a valve se
A gate valve capable 2012-01-19
An object is to provide a gate valve capable of preventing operational deficiencies caused by particulate materials accumulating in a valve box, thus providing superior sealing properties and high dur
