First:the strength of the rubber expansion joint link parts is lower,so if it is glue joint method is not accurate, the strength of the joint will be more low,it is possible cracking.
Second:rubber joint in the process of using the length of the link is not enough,forced out of the length of the link,expanding the scope of the contract may also be cracking at will.
Third:after installation of rubber joint,casual in other parts of the pipe belt here is beyond the scope expansion,is also likely to crack.
Fourth:rubberjoint outdoors under the influence of bad weather,such as sunlight,temperature below use may also be craze.
Fifth:rubber joint in the process of production of sulfide sulfur rubber rubber function is bad or has been used since the excessive failure,grinding, wire rope,rust,etc.,the strength of the joint part is reduced,when use,will also likely flush joint parts easily broken.
because the rubber expansion joint mainly used for lifting and conveying raw water and sewage,water supply and cooling circulating water of coal-fired power plants,metallurgical industry,condensate,the chemical industry of chemical pipelines,cooling of the petrochemical industry.we should pay more attention on these question,and put an end to the accident.
