Ball Valve supplier The company's pipeline ball valves mainly include three series: forged steel three-piece trunnion ball valve, cast steel three-piece trunnion ball valve and fully welded trunnion ball valve; size range: 2 inches to 56 inches (DN50~140; pressure range: 150Lb~ 2500Lb (PN16~42; materials include carbon steel, alloy steel, http://www.sinomachflange.com/valve/ball-valve/
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