Sizes not available in double flange design are offered as lug body design, see page 12.
有些通径的阀门没有双法兰结构，对于这些通径的阀门，可提供凸耳阀 体结构，请参阅第12页。
Flange structure, double sealing rubber ring, so anti-corrosion, waterproof performance.
法兰式结构，双层密封胶圈，故防腐、防水性能好。
The double shell side heat exchanger for use in hydrogenated unit is divided into two kinds of flange type and thread lock ring type.
加氢装置用双壳程换热器分为法兰式和螺纹锁紧环式两种。
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