A kind of fiberglass-steel-lined plastic pipe and its production method

Abstract

The invention discloses a glass reinforced plastic-lined pipe and a production method of the glass reinforced plastic-lined pipe. The glass reinforced plastic-lined pipe comprises a glass reinforced plastic layer, wherein a PE inner pipe is arranged on the inner wall of the glass reinforced plastic layer; a hollow PE spiral rib pipe winding the outer wall of the PE inner pipe in a spiral mode is welded to the periphery of the PE inner pipe; the PE spiral rib pipe is embedded into the inner wall of the glass reinforced plastic layer. The PE inner pipe has better moisture prevention and corrosion prevention properties and is not prone to aging, the glass reinforced plastic layer has higher hardness and mechanical strength, the PE inner pipe and the glass reinforced plastic layer are matched to be complementary, aging of the glass reinforced plastic-lined pipe is relieved on the whole, and the service life of the glass reinforced plastic-lined pipe is prolonged. The PE is a food-grade health material, so that the pipe is applicable to the field of water pipes. As the thermal expansion coefficient of the glass reinforced plastic layer and the thermal expansion coefficient of the PE inner pipe are different, a gap will be generated between the glass reinforced plastic layer and the PE inner pipe, the PE inner pipe is not separated from the glass reinforced plastic layer due to the PE spiral rib pipe, and meanwhile as the PE spiral rib pipe is hollow, materials are saved, and the PE spiral rib pipe plays a role in buffering the pressure of the PE inner pipe to reduce the possibility of cracking caused when the pipe is stressed.

Description

technical field [0001] The invention belongs to the field of pipe materials, and in particular relates to a glass steel pipe structure. Background technique [0002] The existing glass steel pipe is also called glass fiber wound sand pipe (RPM pipe). It mainly uses glass fiber and its products as reinforcing materials, unsaturated polyester resin and epoxy resin with polymer components as matrix materials, and inorganic non-metallic particle materials such as quartz sand and calcium carbonate as fillers as main raw materials. FRP has a series of advantages of light weight, high rigidity, low cost and easy installation. Its weakness is also obvious: it is easy to age due to sunlight and humidity for a long time, and its related performance cannot be guaranteed. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a fiberglass-lined plastic pipe with a novel and compact structure, which is not easy to age and has a lo...

AI Technical Summary

Problems solved by technology

Its weakness is also obvious: it is easy to age due to sunlight and humidity for a long time, and its related performance cannot be guaranteed

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