I good tightness 我好闷
Good tightness & self-fightness 与药物相容性好
Good air-tightness 气密性好
Good water tightness 水密性好
Gas Tightness Good 气密性好
Good air tightness 气密性好
All welding field combination, good tightness, ensure that water quality from secondary pollution.
全焊接现场组合，密封性好，确保水质不受二次污染。
The utility model has the advantages of reasonable material selection, high intensity, good tightness and corrosion resistance.
选材合理有较高的强度、耐腐蚀和密封性好。
The utility model has the advantages of simple structure, easy manufacture and maintenance, low cost, good tightness, convenient pressure relief operation, etc.
它具有结构简单使制造和维护比较容易，成本低、密封性能好，卸压操作方便等优点。
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