A kind of anti-corrosion steel rib reinforced spiral steel pipe and its manufacturing method

A technology of spiral steel pipe and manufacturing method, which is applied in the direction of pipe, rigid pipe, pipe/pipe joint/pipe fitting, etc., can solve the problems of large pipe wall thickness, high maintenance cost, difficult control, etc., and achieves high production efficiency, reliable quality, simple structure

Active Publication Date: 2017-12-29
张翼飞
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the deficiencies in the prior art, the present invention provides a new type of anti-corrosion steel rib reinforced spiral steel pipe and its production method, which is used for the production of large-diameter bearing and plug-in connection (of course, it can also be made into flange type or other forms) steel pipe , used to solve the defects of large-diameter oil transportation, gas transportation, water supply and drainage pipelines, such as high energy consumption (large pipe wall thickness), high maintenance costs (difficult to control the quality of on-site welding), etc., and solve the problem of comprehensive anti-corrosion

Method used

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  • A kind of anti-corrosion steel rib reinforced spiral steel pipe and its manufacturing method
  • A kind of anti-corrosion steel rib reinforced spiral steel pipe and its manufacturing method
  • A kind of anti-corrosion steel rib reinforced spiral steel pipe and its manufacturing method

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Embodiment 2

[0078] Embodiment two, combined with Figure 8 ,

[0079] The difference from the first embodiment is that the spiral steel rib is not welded on the pipe body, but integrally formed with it. Use the steel rolling system to directly roll the thick steel strip with steel ribs, and then weld it to form a spiral steel pipe, then make the socket, and finally carry out protective treatment and inspection. Forms an all-steel pipe with helical ribs. The specific process is as follows:

[0080] In the first step, rolling a continuous steel plate with steel ribs;

[0081] The second step is to use a spiral winding machine to wind and weld to form a steel pipe with spiral steel ribs;

[0082] The third step is to cut to length, remove the steel rib at the socket, and seal and repair the open end of the steel rib.

[0083] The fourth step is to preheat the two ends of the steel pipe, and carry out the shaping of the socket and the socket. Specifically, make the socket (2) and the soc...

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Abstract

The invention discloses a corrosion-prevention steel rib reinforcement spiral steel pipe and manufacturing methods thereof. Spiral steel ribs are arranged on the outer wall of the steel pipe, and a steel bearing opening and a steel inserting opening which are integrated with a steel pipe body are formed in the two ends of the steel pipe body respectively. The steel ribs extend to the outer surface of the bearing opening. Polymer corrosion-prevention layers are arranged to the inner wall and the outer wall of the steel pipe body in a hot compress manner. At least one groove is formed in the position of the bearing opening or / and the inserting opening, wherein a sealing ring is arranged in the groove. The two preparing methods are disclosed. Consumption of steel is reduced by more than 30%, the weight of the overall pipeline is reduced, main performance indexes such as ring rigidity can be offset through the arrangement of the steel ribs, and the targets of thin walls and high ring rigidity are achieved.

Description

technical field [0001] The invention relates to the technical field of large-diameter pressure-bearing steel pipes, in particular to an anti-corrosion steel rib reinforced spiral steel pipe and a manufacturing method thereof. Background technique [0002] Typical uses of large-diameter pressure-bearing steel pipes (diameter greater than 0.5 meters) buried in the ground; generally include engineering fields such as oil transportation, gas transportation, water supply, and drainage. Its representative main products are: 3PE anti-corrosion steel pipes, ductile iron pipes and other pipe products. The above two products are produced by using different anti-corrosion treatment and pipeline connection technologies, but due to the structural limitations of the products themselves, it is difficult to further realize The technical requirements for energy saving, environmental protection, and prolonging the service life of pipes are explained by taking 3PE anti-corrosion steel pipes as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L9/04
CPCF16L9/04
Inventor 张翼飞
Owner 张翼飞
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