Enhanced plastic double-walled corrugated pipe and manufacturing method thereof

Abstract

The invention discloses an enhanced plastic double-walled corrugated pipe, comprising a pipe wall with an outer wall to be corrugated and convex. The enhanced plastic double-walled corrugated pipe ischaracterized in that an annular and hollow inner pipe is packed in the corrugated and convex inside. The invention has the advantages that the plastic double-walled corrugated pipe with the structurehas high ring stiffness, high yield, simple operation, high production efficiency, smother inner wall and little water flow friction, the manufacturable pipe has a diameter as large as 3,000 or more,and the structure can be made into the flanged connection. The manufacturing method of the invention uses the flame for heating the molds, thereby saving the electric energy and lowering the manufacturing cost.

Description

technical field [0001] The invention relates to a plastic corrugated pipe and a manufacturing method thereof, in particular to a reinforced plastic double-wall corrugated pipe and a manufacturing method thereof. Background technique [0002] The disadvantages of ordinary extruded plastic double-wall bellows are: 1. Due to the limitation of the extrusion head, the diameter cannot be made very large, and it is generally difficult to exceed φ1200; 2. The ring stiffness is not enough, and the ring stiffness of pure plastic double-wall bellows is often not Up to SN8, and the Ministry of Construction stipulates that the stiffness of the drainage pipe ring should not be lower than SN8; 3. The yield is low, especially for large diameters, such as φ800 and above. Production is difficult and the yield is low. Contents of the invention [0003] The object of the present invention is to provide a reinforced plastic double-wall corrugated pipe with low manufacturing cost and high ring ...

AI Technical Summary

Problems solved by technology

[0002] The disadvantages of ordinary extruded plastic double-wall bellows are: 1. Due to the limitation of the extrusion head, the diameter cannot be made very large, and it is generally difficult to exceed φ1200; 2. The ring stiffness is not enough, and the ring stiffness of pure plastic double-wall bellows is often not Up to SN8, and the Ministry of Construction stipulates that the rigidity of the drainage pipe ring cannot be lower than SN8; 3. The yield is low, especially for large diameters, such as φ800 and above. It is difficult to produce and the yield is low.

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