蝶阀(英文:butterfly valve)是指关闭件(阀瓣或蝶板)为圆盘,围绕阀轴
high performance lug eccentric butterfly valve
retz(法兰,对夹)气动硬密封蝶阀采用三偏心多层次金属
612 series regulating butterfly valve dn 40 – 200 mm
d371f4-16c turbo butterfly valve
Tips:Do Not Provide
Personal Loans: Go Easy On Your Finances
Finance, Finance, Finance, Foreign Exchange, Stocks, Currency Circle, Venture Capital, Bitcoin, ICO...