CN202612889U

CN202612889U - Novel steel-plastic composite pipe

Info

Publication number: CN202612889U
Application number: CN 201220202900
Authority: CN
Inventors: 叶建伟
Original assignee: CHENGDU CHUANSHENG PLASTIC CO LTD
Current assignee: CHENGDU CHUANSHENG PLASTIC CO LTD
Priority date: 2012-05-08
Filing date: 2012-05-08
Publication date: 2012-12-19
Anticipated expiration: 2022-05-08

Abstract

The utility model discloses a novel steel-plastic composite pipe which comprises an external plastic layer, an internal plastic layer and a middle steel layer. The novel steel-plastic composite pipe is characterized in that a groove or a bulge loop is arranged on the surface of the middle steel layer. The groove or the bulge loop is a semi-circular or trapezoidal or triangular screwed gear. According to the steel-plastic composite pipe provided by the utility model, when the steel-plastic composite pipe is connected with an external tubular product, untight connection and match are avoided, and problem of leakage is avoided. The novel steel-plastic composite pipe has the advantages of good sealing effect and high safe quality and the like.

Description

A kind of new steel plastic composite

Technical field

The utility model relates to the composite pipe technical field, is specifically related to a kind of new steel plastic composite.

Background technique

Composite pipe especially steel-plastic composite pipe because its good anti-corrosion and have shock resistance and tensile strength is big etc. that advantage is widely used in industry and mining and the daily life.Existing steel-plastic composite pipe is made up of outer plastic layer, inner plastic layer and middle steel layer, described in the middle of the steel layer be continuous, so outer plastic layer, inner plastic layer are separated by middle steel layer.After steel-plastic composite pipe and the plastic pipe welding, pull strength is lower, and sealing effect is not good.But in its universal using process, have following defective: exist in the piping erection process when causing easily being connected with outer tube, composite steel-plastic pipe fitting cooperates not tight with it, causes seepage easily, even might cause the generation of security incident.

In order to solve above-mentioned deficiency of the prior art, the utility model provides a kind of new solution.

The model utility content

The technical problem that the utility model will solve is: be directed to the deficiency of existing technology, a kind of new steel plastic composite is provided, this steel-plastic composite pipe makes that when being connected with outside tubing it is not tight to have avoided connecting cooperation, even causes leakage problems.

For reaching the foregoing invention purpose, the technological scheme that the utility model adopted is: a kind of new steel plastic composite is provided, comprises outer plastic layer, inner plastic layer and middle steel layer; It is characterized in that: the steel laminar surface is provided with groove or bulge loop in the middle of said.

Further, said groove or bulge loop are semicircle trapezoidal or leg-of-mutton screw thread dentation.

Further, the recessed middle steel laminar surface 0.1～2mm of said groove.

Further, steel laminar surface 0.1～2mm in the middle of the said bulge loop protrusion.

Further, said outer plastic layer and inner plastic layer are high-density polyethylene material.

In sum, the new steel plastic composite that the utility model provided has following advantage than existing technology:

1, steel-plastic composite pipe is when being connected with outside tubing, and it is not tight to have avoided connecting cooperation, even causes leakage problems, and this new steel plastic composite has good sealing effect, safe mass advantages of higher.

2, also has long service life, advantage with low cost.

Description of drawings

Fig. 1 is provided with the structural representation of groove for the new steel plastic composite;

Fig. 2 is provided with the structural representation of bulge loop for the new steel plastic composite.

Wherein, 1, outer plastic layer; 2, middle steel layer; 3, inner plastic layer; 4, groove; 5, bulge loop.

Embodiment

Below in conjunction with accompanying drawing the embodiment of the utility model is done and to be described in detail:

As shown in the figure, this new steel plastic composite comprises outer plastic layer 1, inner plastic layer 3 and middle steel layer 2; It is characterized in that: steel layer 2 surface are provided with groove 4 or bulge loop 5 in the middle of said.

Said groove 4 or bulge loop 5 are semicircle trapezoidal or leg-of-mutton screw thread dentation; Said groove 4 recessed middle steel laminar surface 0.1～2mm; Steel laminar surface 0.1～2mm in the middle of said bulge loop 5 protrusions; Said outer plastic layer 1 is high-density polyethylene material with inner plastic layer 3.

Connection between the steel-plastic composite pipe is to peel off through the steel-plastic composite pipe termination that hot melt connects and composes steel-plastic composite pipe integral body in the outer joint that inserts plastic pipe of one section welded steel pipe.The steel-plastic composite pipe that the utility model provides is provided with groove or bulge loop, has increased compound surface of contact and Adhesion force, has improved the sealing effect of steel and plastic composite material pipe.

In sum, the steel-plastic composite pipe that utilizes the utility model to provide makes that when being connected with outside tubing it is not tight to have avoided connecting cooperation, even causes leakage problems, and this new steel plastic composite has good sealing effect, safe mass advantages of higher.

Though describe in detail in conjunction with the embodiment of accompanying drawing, should not be construed as qualification to the protection domain of this patent to the utility model.In the described scope of claims, various modifications that those skilled in the art can make without creative work and distortion still belong to the protection domain of this patent.

Claims

1. a new steel plastic composite comprises outer plastic layer (1), inner plastic layer (3) and middle steel layer (2); It is characterized in that: steel layer (2) surface is provided with groove (4) or bulge loop (5) in the middle of said.

2. new steel plastic composite according to claim 1 is characterized in that: said groove (4) or bulge loop (5) are semicircle trapezoidal or leg-of-mutton screw thread dentation.

3. new steel plastic composite according to claim 2 is characterized in that: steel laminar surface 0.1～2mm in the middle of said groove (4) is recessed.

4. new steel plastic composite according to claim 2 is characterized in that: steel laminar surface 0.1～2mm in the middle of said bulge loop (5) protrusion.

5. new steel plastic composite according to claim 1 is characterized in that: said outer plastic layer (1) and inner plastic layer (3) are high-density polyethylene material.