电动  气动 J44H J44Y 直角截止阀 角式截止阀 法兰截止阀 不锈钢 铸钢 J44H J44Y 直角截止阀 角式截止阀 法兰截止阀  

●检验与实验：　GB/T13927J44H_Y角式截止阀(节流阀)安装尺寸及重量：GB 1.6MPaDN506580100125150L125145155175200225H375390425515535570D0200250250300300350GB 2.5MPaGB 4.0MPaDN506580100125150506580100125150L125145155175200225125145155175200225H375390425515535570375390425515535570D0200250250300300350200250250300300350GB 6.4MPaDN506580100125150L150170190215250275H390425450565675715D0200250250350400450