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

2. 结构长度挈�/strong>GB12221-89
   Face to Face ACCORDING to GB12221-89

3. 法兰尺寸挈�/strong>JB/T79-94
   Flange Dimenaion Accoring to JB/779-94

4. 阀门检查和试验挈�/strong>GB13927
   Valve Check and Test According to GB13927