1. Inner: rubber tube. 2. Middium layer: multi-layer of rubber-dipped tyre fabric. 3. Material: natual rubber, anti-aging. Multi layer of rubber- dipped tyre fabric. ar. 11. Testing pressure: 0.15mpa, 1.5bar. 12.Warranty: 12 months. 1. Anti-explosion. 2. Wholely winding. 3. Anti-aging. 4. Thick material, 18layers, 19layers, 20layers, 21layers, 22layers, etc.
