| 摘要 |
PROBLEM TO BE SOLVED: To provide a hose for placing ready-mixed concrete with improved abrasion resistance by suppressing expansion deformation of a pressure resisting reinforcing layer between reinforcing wires, preventing generation of local abrasion of inner rubber when forcibly feeding ready-mixed concrete and preventing abrasion breakage of the hose. SOLUTION: In this hose for placing ready-mixed concrete having inner rubber 1, outer rubber 2, at least two layers of pressure resisting reinforcing layers 3, 4 disposed between the rubber 1, 2 and a spirally wound reinforcing wire 5, a reinforcing tape 6 with high elasticity having tensile elastic modulus of 4500 kg/cm or more is wound between the outer rubber 2 and the pressure resisting reinforcing layer 3 and between the outer rubber 2 and the spirally wound reinforcing wire 5.
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