Process for producing composite zinc-coated steel pipe with inner stainless steel lining

A galvanized steel pipe and production process technology, applied in the direction of pipes/pipe joints/fittings, pipes, rigid pipes, etc., can solve the problems of high investment cost, easy aging of plastic pipes, high cost of use of large-diameter pipes, etc., and achieve simple production process , low cost, high production output

Inactive Publication Date: 2003-04-09
郑阿松
0 Cites 2 Cited by

AI-Extracted Technical Summary

Problems solved by technology

Limited to the national conditions of our country, pure stainless steel pipes or copper pipes cannot be widely used like developed countries. Although the application of plastic water supply pipes can greatly improve water quality, they are inferior to metal in terms of strength, external load-bearing capacity and impact resis...
View more

Abstract

The production process of composite zinc-coated steel pipe with stainless steel lining belongs to the field of metal processing technology. The production process includes trimming inside wall of thezinc-coated steel pipe, painting adhesive to outer wall of the stainless steel pipe, inserting the stainless steel pipe into the zinc-coated steel pipe, hemming and sealing two ends, leading steam into the stainless steel pipe to heat and pressurize, heating the zinc-coated steel pipe from outside electrically to combine two layers of steel pipe firmly. The composite pipe may be used in city water supply to raise water quality and used to replace stainless steel pipe or copper pipe as industrial conveyance pipe.

Application Domain

Layered productsRigid pipes

Technology Topic

Steel tubeMetalworking +7

Examples

  • Experimental program(1)

Example Embodiment

[0013] (Unit: mm)
[0014] Select galvanized steel pipes and stainless steel pipes, and firstly polish the inner wall of the galvanized steel pipes, flatten them, and trim them until the inner surface is smooth and free of impurities. The outer surface of the stainless steel pipe is uniformly coated with adhesive, which is a special amide hot-melt adhesive, and then is sleeved into the galvanized steel pipe, crimped and closed at both ends. The stainless steel pipe is heated and pressurized by steam, and the galvanized steel pipe is heated by electric heating. The heating temperature inside and outside is 100-110℃, and the pressure inside the stainless steel pipe is 1.6-2.0MPa. Keep it for a certain period of time until the outer and inner walls of the galvanized steel pipe and the outer wall of the stainless steel pipe are firmly compounded by the adhesive and then cooled, relieved, and finished.

PUM

no PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.

Similar technology patents

Micro USB (universal serial bus) receptacle

Owner:ZHONGSHAN K MATE GENERAL ELECTRONICS

Welding rod for wet underwater welding of low alloy steel

Owner:725TH RES INST OF CHINA SHIPBUILDING INDAL CORP

Classification and recommendation of technical efficacy words

  • Simple production process
  • increase production output

Preparation method of NdFeB magnet with high coercivity

InactiveCN107578912AReduce machining costsSimple production process
Owner:YANTAI ZHENGHAI MAGNETIC MATERIAL

Production method of composite bimetal pipe

Owner:大连合生科技开发有限公司

Method for producing outer bag paper of apple fruit growing bag by coating method

InactiveCN102277785ASimple production processEasy to adjust process parameters
Owner:SHAANXI UNIV OF SCI & TECH

Strong basic electrolysis water generating device for controlling temperature of electrolyte

InactiveCN107055698AImprove production qualityincrease production output
Owner:重庆七口泉生物医药科技有限公司

Grain screening machine with scraping plate impurity removing structure

PendingCN109939939Alabor savingincrease production output
Owner:ANHUI VISION OPTOELECTRONICS TECH

Method for producing levodopa through microbial fermentation and application

PendingCN114395590Aincrease glucose fluxincrease production output
Owner:NANJING SHOUBAI BIOTECH CO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products