| 摘要 |
<p>PURPOSE:To secure such a synthetic resin coated pipe that is less in an amount of flexibility due to external force and excellent in wear resistance and nonstickiness in terms of surface by coating crystalline resin on the surface of a nonmagnetic metal pipe specified with specific gravity and elastic modulus each. CONSTITUTION:Crystalline resin is coated on the surface of an inner pipe of a non-magnetic or feeble magnetic metal pipe or fiber reinforced resin pipe of less than 5.0 in specific gravity and more than 2000kg/mm<2> in elastic modulus. This inner pipe 1 consists of a pipe of light metal such as aluminum, aluminum alloy or the like and a pipe reinforced with an organic or inorganic fiber such as a carbon fiber, a glass fiber or suchlike. The crystalline resins are of polyolefine resin, polyacetal resin or the like. The coated pipe is secured in the floowing procedures that the inner pipe 1 is inserted into a die 3, coated with crystalline resin pressed-in from an extruder 4, forming an outer pipe 5, and then cut off successively via a detecting machine 10, a cutting mechanism 9 and a travel measuring mechanism 11. In consequence, such a wear resisting and nonsticky pipe is securable in succession.</p> |
