| 摘要 |
A pressure-withstanding synthetic resin pipe includes an inner wall of a synthetic resin and an outer wall of a synthetic resin. A metallic reinforcement belt plate having an inverted U-shaped sectional contour and a flat, metallic belt plate having ends bent to form engagement portions and adapted to be engaged with open end portions of the metallic reinforcement belt plate are disposed between the inner wall and a protruded corrugation portion of the outer wall.
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