1、Certain flexibility is provided with the position of joint that allows a certain swinging angle(within 5°) formedbetween the piep and the pipe axis.Join of the pipe system can be insured to be safe and reliable even when vibration or geological subsidence occurs.

2、The system avoids completely the problem that a radial shrinkage is formed in the position of joint resulting in a resistance to the hydraulic haed when using other ways of joint such as a concave groove and compression.Thus efficiency of dielectric transmission is improved and energy is saved.

3、The joint is applicable to occasions carrying a certain negative pressure.It has been tested taht good sealing is a available with the system is under 0.2Mpa negative pressure.Therefore,it is applicable to vacuum drainage system and siphonic drainages system.

4、The design is light and overcomes the defectes existing in traditional clasp joint,such as big material exhaustion,big radial size and strict requirements to reserved or embedded channels.The flange joint of the big-caliber pipe(DN 50-DN 200) shows a particularly distinct appearance of the above improvements.It lowers manufacturing cost for projects and saves cost.

5、The product can provide a safe and reliable joint for pipes with thin wall or even super thin wall while fulfilling needs for use,which reduces thickness of the pipe strikingly and save material.

6、Since the design adpots knock-down technology,replacement and maintenance of components in the system can be effected without destroying the original pipe system when failure occur to components of the system by accidents,which lowers daily maintenance cost and further reducees functioning and management cost of the system.