CN214662608U

CN214662608U - Plastic-coated steel pipe

Info

Publication number: CN214662608U
Application number: CN202120921502.3U
Authority: CN
Inventors: 梅畅; 梅鹏
Original assignee: Hunan Dingchen Pipe Industry Co ltd
Current assignee: Hunan Dingchen Pipe Industry Co ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2021-11-09
Anticipated expiration: 2031-04-29

Abstract

The utility model provides a plastic-coated steel pipe belongs to water pipe technical field. The plastic-coated steel pipe comprises a steel pipe body, thickened parts are arranged at openings at two ends of the steel pipe body, a first epoxy powder layer is arranged inside the steel pipe body, a second epoxy powder layer, an adhesive layer and a polyethylene powder layer are sequentially arranged outside the steel pipe body from bottom to top, and the thickness of the coating layer at the openings at two ends of the steel pipe body on the first epoxy powder layer, the second epoxy powder layer, the adhesive layer and the polyethylene powder layer is larger than that of the coating layer at other parts. The utility model discloses a steel pipe both ends opening part is equipped with the thickening portion, and when the steel pipe passed through the hoist and removed, fixes the hoist in thickening portion department, avoids the steel pipe to remove in-process steel pipe opening part and warp. During the installation, both ends and flange or other steel pipe junctions easily take place to collide with the friction, make the inside and outside coating of steel pipe take place the phenomenon that the part drops, and this application is with the coating thickening at steel pipe both ends, avoids the steel pipe body because of colliding with the coating and drop and expose completely, takes place the corrosion phenomenon.

Description

Plastic-coated steel pipe

Technical Field

The utility model belongs to the technical field of the water pipe, concretely relates to plastic-coated steel pipe.

Background

The pipeline is the most rapid, economical and reliable method for conveying media, natural gas, water, petroleum, coal blocks and the like can be conveyed through the pipeline, the common pipelines at present comprise plastic pipes, cement pipes, cast iron pipes, steel pipes and the like, particularly steel pipes, the performance quality of the steel pipes is greatly superior to that of other pipes, so the steel pipes are widely used, and the diameters of the pipelines used in the industrial application at present are larger and larger along with the continuous development of social productivity.

The water supply pipeline is an important part for delivering water and distributing water to users in water supply engineering, and because water is delivered through the pipeline formed by the galvanized steel pipe, drinking water is directly contacted with the pipe wall, the pipe wall can be rusted and corroded for a long time, and the service life of the pipe is shortened; furthermore, the inclusion of the rust into the water also affects the quality of the water.

Patent CN201620311237.6 discloses a water-supply plastic-coated composite steel pipe, the inner wall or outer wall of which is coated with an epoxy resin layer to prevent the corrosion of water to the steel pipe.

However, the steel pipe coated with the polymer coating on the inner and outer surfaces may be separated from the polymer coating after a long-term use, which may affect the service life of the steel pipe.

In addition, need use the hoist to fix at the steel pipe both ends when current steel pipe installation, remove the steel pipe, because the steel pipe is heavier, and the pipe wall of steel pipe is thinner, and the lifting device's area of stress is little, leads to the steel pipe both ends and the local deformation of hoist contact, influences the use.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a plastic-coated steel pipe to solve above-mentioned technical problem.

In order to achieve the above object, the technical solution of the present invention is:

the utility model provides a plastic-coated steel pipe, includes the steel pipe body, and the opening part at steel pipe body both ends is equipped with thickening portion, and inside first epoxy powder layer that is equipped with of steel pipe body, steel pipe body outside from bottom to top are second epoxy powder layer, gluing agent layer and polyethylene powder layer in proper order, the coating thickness that first epoxy powder layer, second epoxy powder layer, gluing agent layer and polyethylene powder layer lie in both ends opening part in the steel pipe body is greater than other positions.

Preferably, the thickness of the first epoxy powder layer is more than or equal to 400 um; the thickness of the second epoxy powder layer is more than or equal to 250 um; the thickness of the adhesive layer is more than or equal to 100 um; the thickness of the polyethylene powder layer is more than or equal to 1600 um.

Preferably, the thickness of the first epoxy powder layer is 400um, and the thickness of the openings at two ends is 500 um; the thickness of the second epoxy powder layer is 250um, and the thickness of the openings at two ends is 280 um; the thickness of the adhesive layer is 100um, and the thickness of the openings at two ends is 120 um; polyethylene powder layer thickness is 1600um, and the thickness of both ends opening part is 1620 um.

Preferably, the thickness of the thickened parts at the two ends of the steel pipe body is twice of the thickness of the steel pipe body.

Preferably, the width of the thickened parts at the two ends of the steel pipe body is less than 5 cm.

The utility model has the advantages that:

1. the utility model discloses a steel pipe both ends opening part is equipped with the thickening portion, and when the steel pipe passed through the hoist and removed, fixes the hoist in thickening portion department, avoids the steel pipe to remove in-process steel pipe opening part and warp.

2. When the steel pipe was installed, both ends and flange or other steel pipe junctions easily take place to collide with the friction, make the inside and outside coating of steel pipe take place the phenomenon that the part drops, and this application steel pipe is with the coating thickening at its both ends, avoids the steel pipe body because of colliding with the coating drop and expose completely, takes place the corrosion phenomenon.

Drawings

Fig. 1 is a schematic sectional structure diagram of the present invention.

Fig. 2 is a schematic side view of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

Referring to fig. 1 to 2, a plastic-coated steel pipe comprises a steel pipe body, thickened parts 11 are arranged at openings at two ends of the steel pipe body 1, a first epoxy powder layer 2 is arranged inside the steel pipe body, a second epoxy powder layer 3, an adhesive layer 4 and a polyethylene powder layer 5 are sequentially arranged outside the steel pipe body from bottom to top, and the thickness of the coating layer at the openings at two ends of the steel pipe body, which is formed by the first epoxy powder layer 2, the second epoxy powder layer 3, the adhesive layer 4 and the polyethylene powder layer 5, is larger than that of the coating layer at other positions. The utility model discloses a steel pipe both ends opening part is equipped with thickening portion 11, and when the steel pipe passed through the hoist and removed, fixes the hoist in thickening portion 11 department, avoids the steel pipe to remove the deformation of in-process steel pipe opening part. When the steel pipe was installed, both ends and flange or other steel pipe junctions easily take place to collide with the friction, make the inside and outside coating of steel pipe take place the phenomenon that the part drops, and this application steel pipe is with the coating thickening at its both ends, avoids the steel pipe body because of colliding with the coating drop and expose completely, takes place the corrosion phenomenon.

Further, the thickness of the first epoxy powder layer 2 is more than or equal to 400 um; the thickness of the second epoxy powder layer 3 is more than or equal to 250 um; the thickness of the adhesive layer 4 is more than or equal to 100 um; the thickness of the polyethylene powder layer 5 is more than or equal to 1600 um. Preferably, the thickness of the first epoxy powder layer 2 is 400um, and the thickness of the openings at two ends is 500 um; the thickness of the second epoxy powder layer 3 is 250um, and the thickness of openings at two ends is 280 um; the thickness of the adhesive layer 4 is 100um, and the thickness of the openings at two ends is 120 um; polyethylene powder layer 5 thickness is 1600um, and the thickness of both ends opening part is 1620 um.

Further, the thickness of the thickened parts 11 at the two ends of the steel tube body 1 is twice of the thickness of the steel tube body. Preferably, the width of the thickened part 11 at both ends of the steel pipe body 1 is less than 5 cm. The thickening parts at the two ends of the steel pipe are used for reinforcing, and deformation of the steel pipe during hoisting is avoided.

The utility model has the advantages that:

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. The utility model provides a plastic-coated steel pipe, its characterized in that, includes the steel pipe body, and the opening part at steel pipe body both ends is equipped with thickening portion, and inside first epoxy powder layer that is equipped with of steel pipe body, steel pipe body outside from bottom to top are second epoxy powder layer, gluing agent layer and polyethylene powder layer in proper order, the coating thickness that first epoxy powder layer, second epoxy powder layer, gluing agent layer and polyethylene powder layer lie in both ends opening part in the steel pipe body is greater than other positions.

2. The plastic-coated steel pipe of claim 1, wherein the thickness of the first epoxy powder layer is greater than or equal to 400 um; the thickness of the second epoxy powder layer is more than or equal to 250 um; the thickness of the adhesive layer is more than or equal to 100 um; the thickness of the polyethylene powder layer is more than or equal to 1600 um.

3. The plastic-coated steel pipe of claim 2, wherein the thickness of the first epoxy powder layer is 400um, and the thickness of the openings at both ends is 500 um; the thickness of the second epoxy powder layer is 250um, and the thickness of the openings at two ends is 280 um; the thickness of the adhesive layer is 100um, and the thickness of the openings at two ends is 120 um; polyethylene powder layer thickness is 1600um, and the thickness of both ends opening part is 1620 um.

4. A plastic coated steel pipe according to any one of claims 1 to 3, wherein the thickness of the thickened portion at both ends of the steel pipe body is twice the thickness of the steel pipe body.

5. The plastic-coated steel pipe as claimed in claim 4, wherein the width of the thickened portions at both ends of the steel pipe body is less than 5 cm.