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CN110792810A
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Micro-resistance slow-closing silencing check valve
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CN110715062A
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Limiting ring structure of three-eccentric seal butterfly valve
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CN110788669A
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Ball core clamping device of eccentric half-ball valve
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CN110778841A
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Double-ripple metal expansion piece
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CN110805741A
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Remote control ball-cock assembly with non return function
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CN110848403A
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Three-eccentric hard sealing butterfly valve
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CN109608736A
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A kind of pipe used in mine sealing gasket for valve piece preparation method
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CN109608735A
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A kind of underground utilities pipe gasket piece preparation method
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CN109575403A
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A kind of industrial oil impact resistance valve door sealing coil preparation method
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CN109467763A
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A kind of offshore oil probing pipeline valve gasket seal
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CN109467826A
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A kind of stretch-proof sealing gasket for valve
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CN109575477A
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A kind of valve seal rubber pad water-soluble lubricant and preparation method thereof
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CN109467764A
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A kind of conveyance conduit impact resistance valve door sealing gasket
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CN109608799A
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A kind of stretch-proof sealing element for offshore oil
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CN109396258A
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A kind of check-valves valve block full automatic processing device
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CN109396249A
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A kind of check-valves sheet type valve block automatic punching device
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CN109396136A
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A kind of secondary clarifier effluent corridor automatic cleaning apparatus
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CN109200645A
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A kind of novel filter structure
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CN109465263A
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A kind of self-cleaning brushing device
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CN109351008A
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A kind of filter tank structure of high efficiency from block clearing
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