| 摘要 |
The invention relates to a method of manufacturing reinforced pipes, particularly those having a strong resistivity against internal pressure as well as compressive strength due to external crushing forces, made of a material obtained by mixing thermoplastic synthetic resin powder and a fibrous inorganic substance. The material is introduced in a rotatable metal mold in a predetermined quantity, and the metal mold is heated externally while it is rotating. The fibrous substance is diffused uniformly in the molten plastic material and aligned in the peripheral direction, and thus the reinforced pipe is produced.
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