CN203686388U - Steel and plastic composite pressure pipe - Google Patents
Steel and plastic composite pressure pipe Download PDFInfo
- Publication number
- CN203686388U CN203686388U CN201420049442.0U CN201420049442U CN203686388U CN 203686388 U CN203686388 U CN 203686388U CN 201420049442 U CN201420049442 U CN 201420049442U CN 203686388 U CN203686388 U CN 203686388U
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- CN
- China
- Prior art keywords
- steel
- layer
- plastic
- pipe
- steel pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 61
- 239000010959 steel Substances 0.000 title claims abstract description 61
- 229920003023 plastic Polymers 0.000 title claims abstract description 60
- 239000004033 plastic Substances 0.000 title claims abstract description 60
- 239000002131 composite material Substances 0.000 title claims abstract description 26
- -1 polyethylene Polymers 0.000 claims description 17
- 239000004698 Polyethylene Substances 0.000 claims description 13
- 229920000573 polyethylene Polymers 0.000 claims description 13
- 239000003292 glue Substances 0.000 claims description 12
- 230000003746 surface roughness Effects 0.000 claims description 9
- 239000004831 Hot glue Substances 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 4
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 229920001038 ethylene copolymer Polymers 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 239000005435 mesosphere Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Landscapes
- Laminated Bodies (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The utility model discloses a steel and plastic composite pressure pipe and belongs to the technical field of steel and plastic composite pipes. The steel and plastic composite pressure pipe comprises an outer plastic layer, an outer rubber layer, an inner rubber layer and an inner plastic layer. A steel pipe with the high-roughness surface is arranged between the outer rubber layer and the inner rubber layer, and the thickness of a weld joint of the steel pipe is larger than the thickness of a pipe body of the steel pipe. The steel and plastic composite pressure pipe has five layers of structures, the middle layer is a welded steel pipe with the high-roughness surface, the bonding strength of the inner plastic layer and the outer plastic layer is good, and the pressure bearing capability is high.
Description
Technical field
The utility model relates to steel-plastic composite pipe technical field.
Background technique
The category of piping materials that mainly apply in steel-plastic composite pressure pipe field at present mainly contains:
1) hole pattern steel band polyethylene compound pipe, its product structure is to contain by polyethylene the round-meshed steel pipe that distributes, can solve from technique the quality problems of bonding delamination, but incomplete welded tube of steel pipe series of strata, plastic layer is also being born certain pressure-bearing effect, when serviceability temperature raises or plastic layer when aging, its bearing capacity must decline; Add metal frame to strengthen compound obtained effect not bery remarkable.
2) steel wire mesh frame plastic (polyethylene) composite pipe, its product structure is that winding steel wire is strengthened polyethylene pipe in vinyl tube, the bearing course of the tubing of this form is not complete steel pipe, polyethylene participates in pressure-bearing in this tubing, and therefore the variation of extraneous factor and poly aging bearing capacity and reliability to tubing can exert an influence.
3) steel-plastic composite pressure pipe of zinc-plated or aluminum-plated steel pipe, its steel tube surface hot galvanized layer or aluminium coated surface roughness are very low, thereby have reduced effective bond area of polyethylene layer and steel pipe layer.Adopt electrogalvanizing to process steel tube surface, can improve the surface roughness of coating, and then improve effective bond area of polyethylene layer and steel pipe layer, but the intensity of electro-galvanized layer is very low, can reduce again the bonding strength of polyethylene layer and steel pipe layer.In addition, adopt treatment process zinc-plated or that aluminize, can increase the cost of production of tubing.
4) plain carbon steel plastic composite, while adopting Tig Welding, the steel plate of weld seam both sides does not stress substantially, and therefore the thickness at weld seam position can be less than the thickness of mother metal, and therefore weld seam position becomes the weak spot of whole tubing.The strength decreased at weld seam position has caused the reduction of the intensity of whole tubing, and the utilization ratio of tubing metal is reduced, and has caused very large waste.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of steel-plastic composite pressure pipe, and described steel-plastic composite pressure pipe has five-layer structure, the welded steel pipe that mesosphere is surperficial high roughness, and interior outer plastic layer bonding strength is good, and bearing capacity is high.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
A kind of steel-plastic composite pressure pipe, comprises outer plastic layer, outer glue-line, inner glue layer and inner plastic layer, is the coarse steel pipe of inner and outer surface between described outer glue-line and inner glue layer; Throat depth on described steel pipe thickens 1 ~ 8% than steel pipe body.
The surface roughness of described steel pipe is Ra6.3 ~ Ra50.
Preferably, the surface roughness of described steel pipe is Ra12.5 ~ Ra25;
Throat depth on described steel pipe thickens 3 ~ 5% than steel pipe body.
Further, the coarse steel pipe of described inner and outer surface is the steel pipe that surface is provided with annular knurl, groove or reticulate structure.
Described outer plastic layer and inner plastic layer are polyethylene, crosslinked polyethylene or polypropylene.
When described outer plastic layer or inner plastic layer are polyethylene or crosslinked polyethylene, described outer glue-line or inner glue layer are ethylene copolymer based hot melt adhesive; When described outer plastic layer or inner plastic layer are polypropylene, described outer glue-line or inner glue layer are propylene copolymer hot melt adhesive.
The beneficial effect that adopts technique scheme to produce is:
1) weld seam position thickness is greater than steel plate mother metal thickness, and weld seam position intensity is also greater than the intensity of steel pipe mother metal; Therefore the intensity of steel-plastic composite pressure pipe and reliability are close to intensity and the reliability of same tube wall thickness seamless steel pipe, and bearing capacity is high;
2) the high roughness of surface of steel plate has improved effective bond area of steel pipe layer and interior outer plastic layer, contributes to improve to mould layer and the bonding strength of steel pipe layer, effectively avoids moulding layer separating with steel pipe layer; The cost of production of tubing, so have better economic benefit;
3) steel pipe has played the effect of covering completely to light, has avoided all-plastic pipe, hole pattern Steel Skeleton steel to mould pipe and the steel wire winding steel transmission of light of moulding pipe, has avoided the pollution of having avoided water quality of growing of pipe material inner wall liver moss and microorganism.
Brief description of the drawings
Fig. 1 is the utility model structural representation;
Wherein, 1, outer plastic layer, 2, outer glue-line, 3, steel pipe, 4, inner glue layer, 5, inner plastic layer, 6, weld seam.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
The surface roughness of described steel pipe 3 is Ra12.5;
Described outer plastic layer 1 and inner plastic layer 5 are polyethylene;
Described outer glue-line 2 and inner glue layer 4 are ethylene copolymer based hot melt adhesive.
According to " CJ/T 183-2008 steel is moulded and met pressure tube ", the performance of prepared steel-plastic composite pressure pipe is tested, test result is as shown in table 1, its peel strength value >=150N/25mm, should be without separating and crack phenomenon between interior outer plastic layer and steel layer, and weld seam is without tearing phenomenon.
The performance of table 1 steel-plastic composite pressure pipe
Claims (7)
1. a steel-plastic composite pressure pipe, comprises outer plastic layer (1), outer glue-line (2), inner glue layer (4) and inner plastic layer (5), it is characterized in that: between described outer glue-line (2) and inner glue layer (4), be the coarse steel pipe (3) of inner and outer surface; Weld seam (6) Thickness Ratio steel pipe (3) body on described steel pipe (3) thickens 1 ~ 8%.
2. a kind of steel-plastic composite pressure pipe according to claim 1, is characterized in that: the surface roughness of described steel pipe (3) is Ra6.3 ~ Ra50.
3. a kind of steel-plastic composite pressure pipe according to claim 2, is characterized in that: the surface roughness of described steel pipe (3) is Ra12.5 ~ Ra25.
4. a kind of steel-plastic composite pressure pipe according to claim 1, is characterized in that: weld seam (6) Thickness Ratio steel pipe (3) body on described steel pipe (3) thickens 3 ~ 5%.
5. a kind of steel-plastic composite pressure pipe according to claim 1, is characterized in that: the coarse steel pipe (3) of described inner and outer surface is the surperficial steel pipe that is provided with annular knurl, groove or reticulate structure.
6. a kind of steel-plastic composite pressure pipe according to claim 1, is characterized in that: described outer plastic layer (1) and inner plastic layer (5) are polyethylene, crosslinked polyethylene or polypropylene.
7. a kind of steel-plastic composite pressure pipe according to claim 1, is characterized in that: when described outer plastic layer (1) or inner plastic layer (5) are polyethylene or crosslinked polyethylene, described outer glue-line (2) or inner glue layer (4) are ethylene copolymer based hot melt adhesive; When described outer plastic layer (1) or inner plastic layer (5) are polypropylene, described outer glue-line (2) or inner glue layer (4) are propylene copolymer hot melt adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420049442.0U CN203686388U (en) | 2014-01-24 | 2014-01-24 | Steel and plastic composite pressure pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420049442.0U CN203686388U (en) | 2014-01-24 | 2014-01-24 | Steel and plastic composite pressure pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203686388U true CN203686388U (en) | 2014-07-02 |
Family
ID=51008286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420049442.0U Expired - Lifetime CN203686388U (en) | 2014-01-24 | 2014-01-24 | Steel and plastic composite pressure pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203686388U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759080A (en) * | 2014-01-24 | 2014-04-30 | 新兴铸管股份有限公司 | Composite steel-plastic pressure tube and manufacturing method thereof |
| CN104676237A (en) * | 2015-02-11 | 2015-06-03 | 宁波市鄞州得发铝型材配件有限公司 | Plastic-covered iron pipe and production device thereof |
| CN107725912A (en) * | 2017-09-27 | 2018-02-23 | 江苏瑞腾涂装科技有限公司 | A kind of anti-electrostatic fire retardant shaped steel plastic composite |
| CN113217717A (en) * | 2021-04-19 | 2021-08-06 | 四川比耐斯管业有限公司 | Plastic-lined composite pipe |
-
2014
- 2014-01-24 CN CN201420049442.0U patent/CN203686388U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759080A (en) * | 2014-01-24 | 2014-04-30 | 新兴铸管股份有限公司 | Composite steel-plastic pressure tube and manufacturing method thereof |
| CN104676237A (en) * | 2015-02-11 | 2015-06-03 | 宁波市鄞州得发铝型材配件有限公司 | Plastic-covered iron pipe and production device thereof |
| CN104676237B (en) * | 2015-02-11 | 2017-05-03 | 宁波市鄞州得发铝型材配件有限公司 | Plastic-covered iron pipe and production equipment thereof |
| CN107725912A (en) * | 2017-09-27 | 2018-02-23 | 江苏瑞腾涂装科技有限公司 | A kind of anti-electrostatic fire retardant shaped steel plastic composite |
| CN113217717A (en) * | 2021-04-19 | 2021-08-06 | 四川比耐斯管业有限公司 | Plastic-lined composite pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |
|
| CX01 | Expiry of patent term |