| 摘要 |
PROBLEM TO BE SOLVED: To provide a work execution method of preventing generation of a water leakage by weeping even when a water pressure is loaded in a pipe end and applying the execution work at a low cost, in composite high pressure pipe used in a high-pressure pipe requiring high internal pressure strength. SOLUTION: This work execution method of a composite high pressure pipe is one constituted of an inner layer consisting of synthetic resin, a reinforced layer formed by a drawing polyolefin system resin sheet wound in a peripheral direction to an external peripheral surface of the inner layer, and an outer layer consisting of synthetic resin wound to an external periphery of the reinforced layer, to comprise a process stratifying the inner layer, reinforced layer, and outer layer without being fused to make a laminated unit wound to a drum and a process for piping, while forming the long-scaled compound high pressure pipe by heating between each layer fused while delivering the laminated unit from the drum.
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