... 2.Vertical structure 3.Bent frame, beautiful and durable Outside envelope Expander-cold retread General Specification: Booking No. ... *550mmWeight160kgPowerminimum 0.8Mpa, air supply pipe diameter1/2inchMax. Tyre diameter1300mmMax. Tyre Weight136kgFunction Description: 1With vertical structure, height is adjustableLabor ... is bent (non-welded), beautiful and durable. Outside envelope expander