夹套保温闸阀

BZ41H BZ40H BZ41Y BZ40Y BZ40R BZ40T BZ41T

保温闸阀按照标准

1. 设计制造按GB12234-89
   Design Manafacfure According to GB12234-89
   • 结构长度按GB12221-89
     Face to Face ACCORDING to GB12221-89
     • 法兰尺寸按JB/T79-94
       Flange Dimenaion Accoring to JB/779-94
       • 阀门检查和试验按GB13927
         Valve Check and Test According to GB13927

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