CN2509414Y

CN2509414Y - Ultrathin wall inner & outer stainless steel liner plastic composite pipe

Info

Publication number: CN2509414Y
Application number: CN 01235809
Authority: CN
Inventors: 黎国强
Original assignee: GAOMING-SANSHUN PIPE-MATERIAL Co Ltd
Current assignee: GAOMING-SANSHUN PIPE-MATERIAL Co Ltd
Priority date: 2001-05-15
Filing date: 2001-05-15
Publication date: 2002-09-04
Anticipated expiration: 2011-05-15

Abstract

The utility model relates to an ultrathin wall inner and outer stainless steel liner plastic composite pipe, comprising an outer liner ultrathin wall stainless steel pipe, a middle liner plastic pipe and an outer liner ultrathin wall stainless steel pipe. The utility model is characterized in that the inner and outer liners of the composite pipe are ultrathin wall stainless steel pipes and middle liner plastic pipe and are made through drawing and extruding. Compared with the prior art, the utility model has the advantages that the middle liner plastic pipe is tightly fastened by the inner and outer liner stainless steel pipes so that the plastic pipe and the inner and outer liner stainless steel pipes do not generate expansion and contraction to cause delaminating phenomenon because of the change of the environment temperature.

Description

The inside and outside stainless steel lining plastic composited pipe of ultra-thin-wall

The utility model relates to a kind of industry and civilian tubing, is the inside and outside stainless steel lining plastic composited pipe material of a kind of ultra-thin-wall specifically.

The cold and hot water supply of existing industry and civil building, the stainless steel lining plastic composited pipe that steam line is used, its outer stainless steel is a housing, inner lining plastic tube, through cold drawing extruding compound molding, this kind composite pipe manufacturing process is simple, can reduce the manufacturing cost of composite pipe, but exist outer layer metal Stainless Steel Tube and internal layer plastics lined pipe material coefficient of thermal expansion and contraction differ to, the long-time use can produce absciss layer phenomenon between the internal and external layer, cause between pipe leakage and the internal and external layer and hide incrustation scale, influence is used and is healthy, this phenomenon is especially serious at hot water supplying pipe, can produce gas permeation on steam line uses, therefore, people always have a lingering fear to existing stainless steel lining plastic composited pipe usability.

Goal of the invention of the present utility model is to provide between a kind of Stainless Steel Tube and the plastic tube not and can produces stainless steel lining plastic composited pipe inside and outside the ultra-thin-wall that the phenomenon of expanding with heat and contract with cold causes the absciss layer phenomenon because of variation of ambient temperature.

The utility model is to adopt following technological scheme to realize, comprise the mesosphere plastic tube, be enclosed within the inside and outside two-layer ultra-thin-wall Stainless Steel Tube of outside in the plastic tube respectively, its specialization is: the two-layer ultra-thin-wall Stainless Steel Tube that is enclosed within outside in the plastic tube by drawing, extruding and lock ring on the interior outside of plastic tube, thereby plastic tube is fastened.

Itself has the elasticity of wriggling plastic tube, and the ultra-thin-wall Stainless Steel Tube that is enclosed within internal and external layer lock ring after the drawing extruding has been avoided producing the gap between plastic tube and the Stainless Steel Tube at the inner and outer surface of plastic tube.Because internal and external layer stainless steel heat expansion shrinkage coefficient is the same, plastic tube is inside and outside to be fastened by Stainless Steel Tube, so can not produce the absciss layer phenomenon between plastic tube and the Stainless Steel Tube because of the phenomenon of expanding with heat and contract with cold causes.Therefore, compared with the prior art the utility model has between plastic tube and the Stainless Steel Tube and can produce the advantage that the phenomenon of expanding with heat and contract with cold causes the absciss layer phenomenon because of variation of ambient temperature.

Now in conjunction with the accompanying drawings and embodiments the utility model is described in further detail:

Fig. 1 is a preferred embodiment longitudinal profile of a utility model structural representation;

Fig. 2 is a preferred embodiment horizontal section of a utility model structural representation.

As depicted in figs. 1 and 2, the utility model comprises outer ultra-thin-wall Stainless Steel Tube 1, mesosphere plastic tube 2, internal layer ultra-thin-wall Stainless Steel Tube 3, its specialization be outer ultra-thin-wall Stainless Steel Tube 1 and internal layer ultra-thin-wall Stainless Steel Tube 3 by drawing, push lock ring on plastic tube 2 inner and outer surface, the thickness of ultra-thin-wall Stainless Steel Tube is no more than 1/50 of composite pipe external diameter.

Claims

1, the inside and outside stainless steel lining plastic composited pipe of a kind of ultra-thin-wall is characterized in that: the composite pipe internal and external layer is ultra-thin-wall Stainless Steel Tube, mesosphere lining plastic tube.

2, the inside and outside stainless steel lining plastic composited pipe of ultra-thin-wall according to claim 1, it is characterized in that: the stainless thickness of described ultra-thin-wall is not more than 1/50 of composite pipe external diameter.