Manufacture of great size check valve body seal surface;
大口径止回阀阀体密封面加工
Measure and analysis about the leakage rate in sealing test for metal-seated check valve covered in GB standard;
相关标准对金属密封副止回阀密封试验泄漏率的规定及分析
The model and application of check valve in power plant;
电站止回阀的选型及应用