Rubber spiral hose suitable for concrete, sand, gravel, crushed stone, rubble. Heavy, dimensionally stable, flexible material transport hoses. Hose core: Highly abrasion-resistant, synthetic rubber, smooth. Liner: Highly tear-resistant, synthetic cord fabric, strand and steel spiral. Hose cover: Highly abrasion-resistant, synthetic rubber, black, smooth, fabric-patterned, weather and ozone resistant. Abrasion values in accordance with DIN 53516, braid and 1 steel spiral, temperature range from -40° C to +70° C. Operating pressure 10 bar. Vacuum meter/WS.