Q41F燃?xì)馇蜷yQ341F液化天燃?xì)馇蜷y埋地式燃?xì)馇蜷y全焊接鋼質(zhì)球閥手動燃?xì)馇蜷y渦輪燃?xì)馇蜷y上海球閥廠家Q41F、Q341F液化天燃?xì)馇蜷y產(chǎn)品性能規(guī)范:壓力等級常溫試驗壓力(Mpa)殼體密封低氣壓密封公稱壓力(LB)1503