1) Valves 2) ISO9001:2008 3) Technical Standard:MT/T98-2006 by state coal ministry Valves Size 2"-36" ANSI CLASS 150~2500 Working temperature: -46°C~550°C Pressure class(lb): 150,300,600,900,1500,2500 Medium: water, oil, acid medium, etc. Full port design Bolted bonnet, split body Three piece body for 12” and above Trunnion mounted ball type Blow-out proof stem Fire durable construction Anti ...