tire retreading parts-envelope spreader

Envelope spreader is used for loading ,unloading and expanding the envelope. 

1. 8PCS unsharp-angled hand grip well-proportioned distribute on the circle and stead working plate, protect the envelope and increase of service life. 

2.its size is 1750*1450*1950mm,it is suitable for the wheel rim diameter is :15"-24"

3. The power of lifting and expanding by air cylinder, save the labor force and engergy. 

4. the standard tire outer diamater is 500-1300mm.

5.the working pressure is 0.8Mpa.