产品参数
![](/uploadfile/image/20200111/201498d04.gif)
保温闸阀应用规范 Application Norm
1、设计制造按12234-89 Design Manafacfure According to 12234-89
2、结构长度按GB12221-89 f-ace to Face According to GB12221 89
3、法兰尺寸按JB/T79-94 Flange Dimenaion Accoring to JB/T79-94
4、阀门检查和试验按GB13927 Valve check and Test According to GB13927