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Inter Expo Center (IEC)

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147 Tsarigradsko shose Blvd., Sofia, Sofia 1000 Bulgaria
http://iec.bg/en

Upcoming Events

June 2017
June 13, 2017 , 12:00 am - June 11, 2027 , 12:00 am

Present Situation and Analysis of Ball Valve Sealing

Cast stone ball valve is an ideal disc for ash pipeline and its back seal will directly affect the quality and service life of itself. In the past, it adopted an O-shaped rubber seal structure in which an O-shaped sealing ring was placed in an annular groove machined

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