CN2465021Y

CN2465021Y - Steel plastics combined pipe

Info

Publication number: CN2465021Y
Application number: CN 01203574
Authority: CN
Inventors: 蔡海华
Original assignee: QINGYUAN HUAFEI ALUMINIUM PLAS
Current assignee: QINGYUAN HUAFEI ALUMINIUM PLAS
Priority date: 2001-02-22
Filing date: 2001-02-22
Publication date: 2001-12-12
Anticipated expiration: 2011-02-22

Abstract

The utility model discloses a steel-plastic composite pipe. The steel-plastic composite pipe is composed of a plastic inner pipe 1, a steel pipe 3, and a plastic outer pipe 4. An inner layer and an outer layer of the steel pipe 3 are bonded and sealed by hot-melting adhesive 2. The plastic inner pipe 1, the hot-melting adhesive 2, the steel pipe 3, and the plastic outer pipe 4 are bonded and fixed into an integral body, in this way, the steel pipe 3 in the steel-plastic composite pipe is hardly corroded by matters of air, moisture, etc., and the service life of the steel-plastic composite pipe is extended.

Description

Steel-plastic composite pipe

The utility model relates to a kind of compound pipe of moulding, especially steel-plastic composite pipe.

At present, the compound pipe of moulding is mainly by plastic inner pipe, metal tube or wire netting, and the plastic outer tube pressure injection is fixed into one.Because not exclusively sealing between metal tube or wire netting and plastic inner pipe and the plastic outer tube, metal tube or wire netting, especially steel pipe is subjected to the erosion of materials such as air and moisture and corrosion, thereby steel pipe is separated with plastic outer tube with plastic inner pipe, influences compound working life of moulding pipe.

The purpose of this utility model provides the steel-plastic composite pipe that a kind of steel pipe is corroded by materials such as air and moisture hardly.

For achieving the above object, steel-plastic composite pipe of the present utility model is by plastic inner pipe, and steel pipe and plastic outer tube are formed, and the internal and external layer of steel pipe seals with the hot melt adhesive bonding, plastic inner pipe, and hot melt adhesive, steel pipe, plastic outer tube are adhesively fixed and are integral.

After adopting such structure, the internal and external layer of steel pipe seals with the hot melt adhesive bonding, contacting of materials such as isolated steel pipe and air and moisture, steel pipe in the steel-plastic composite pipe is subjected to the erosion of materials such as air and moisture hardly, therefore, steel pipe and plastic inner pipe and plastic outer tube can the invar pipe corrosion and separate, prolonged the working life of steel-plastic composite pipe.

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is the structural representation of the utility model steel-plastic composite pipe.

Steel-plastic composite pipe as shown in Figure 1 is by plastic inner pipe 1, and steel pipe 3 and plastic outer tube 4 are formed, and the internal and external layer of steel pipe 3 is bonded and sealed with hot melt adhesive 2, plastic inner pipe 1, and hot melt adhesive 2, steel pipe 3, plastic outer tube 4 is adhesively fixed and is integral.

During production, steel band is welded into tubulose, or uses the shaping steel pipe, injection machine with hot melt adhesive and plastics respectively pressure injection be adhesively fixed into tubulose at the internal and external layer of steel pipe, like this, the production of steel-plastic composite pipe finishes.

Claims

1. steel-plastic composite pipe, by plastic inner pipe (1), steel pipe (3) and plastic outer tube (4) are formed, it is characterized in that: the internal and external layer of steel pipe (3) is bonded and sealed with hot melt adhesive (2), plastic inner pipe (1), hot melt adhesive (2), steel pipe (3), plastic outer tube (4) is adhesively fixed and is integral.