Hao source flexible waterproof casing cast iron flange pressure gland blue bar pressure platen flexible waterproof casing designed ..

Now many manufacturers for the production of waterproof casing has come to consummate the point. But with the development of social engineering, some of our products are subject to approval gradually improve. Now we use waterproof casing pressure problems Lan introduced, there are two options under normal circumstances, a cast iron press blue, the other is blue steel pressure; pressure cast iron blue is generally used ordinary materials gray iron and ductile iron two materials, the benefits of using cast iron pressure orchid is: to prevent heat deformation, it does not because the temperature changes in the external environment, deformed; but it will be a corresponding disadvantages, such as: intolerance vibration, material casting process is affected by temperature the material will be subject to different degrees of impact, easy to break the outstanding performance of this material; cast iron blue waterproof casing pressure environment should generally be larger temperature difference, there is no vibration or a slight vibration the environment; steel pressure orchid name suggests, the material and are based on 45 steel production from its advantages and disadvantages of the cast iron pressure Fundamentalists contrary, it is easily deformed material use in environments where a large temperature difference, the advantage is strength large, easy to break; impact toughness: structure with optimized formulation designed to increase its impact system, its true impact rate TIR≤, good strength and stiffness, in the correct design and construction conditions, fully meet the laying of underground resistance to external load requirements.