Axial type coal expansion joint （YTZM ）
Compensation direction: axis, the horizontal
Ptfe bellows expansion section
Characteristic menu type Angle to the hinge type..
Straight pipe pressure balance type expansion ...
Double entry universal hinge type expansion joint
Bypass pressure balance of straight pipe type....
Double entry bars high-temperature type expansion
Double entry universal hinge type high temperature
Smoke wind pipe circular expansion joint （YTAS ）