... system: TS, ISO90012. Design: refer to GB12338,MSS-SP-683. Face to face: refer to GB12221-894. Flange standard: JB/T79. ... paper making, metallurgy and waste watertreatment industries, especially applicable to the automation control of fluids with fibre, granule, or with greaterviscosity, ... , Bubble tightCertificationWorkshop and production equipmentsOfficeCompany mansion HB2510 flow control ball valve