1.    The pipe expansion joint is simply a bellows element with flanges as end connections (without welding; so called weldingless).  Due to formed-in-one bellow structures, the contained fluid is separated to flanges away rusty.

2.    Weldingless anti-shock joints could avoid stress concentration and grain boundary corrosion resulting from welding thermal effect.

3.    The products are suitable for a dust-collecting piping system, a smoking-disposal outlet, an exhaust pipe for an engine power plant, and a blowing machine.

4.    The materials and specification could be assigned according to customer requirement.