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Stainless steel corrosion-resistant sewage pipeline and manufacturing method thereof

A technology for sewage pipes and manufacturing methods, applied to pipes, rigid pipes, pipes/pipe joints/pipe fittings, etc., can solve the problems of high maintenance costs and increased maintenance costs, achieve reasonable structure, solve high maintenance costs, and simple production process Effect

Inactive Publication Date: 2013-09-18
NANTONG YAOLONG METAL MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the anti-corrosion pipelines on the market usually use carbon steel anti-corrosion pipelines. The usual method is to apply a layer of anti-corrosion coating on the surface of the pipeline, which will increase the maintenance cost in the future, and the maintenance cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of stainless steel anticorrosion sewage pipeline, the pipe wall thickness of pipeline is 0.5mm, and its manufacturing method comprises the following steps:

[0020] (1) The end of the stainless steel coil is formed by plasma welding first, and then extrusion welding is used after forming;

[0021] (2) Use grinding equipment to level and grind the welded internal and external welds of the pipeline;

[0022] (3) Clean the inner and outer pipelines, and perform bright solid solution annealing after cleaning, where the solid solution annealing temperature is 1030°C;

[0023] (4) Straightening and rounding the semi-finished pipeline to keep the pipeline straight and round;

[0024] (5) Carry out eddy current testing to see if there are unqualified and substandard products;

[0025] (6) Carry out air tightness inspection and hydraulic pressure test, and polish the inside of the tube to maintain the airtightness and water resistance of the stainless steel tube;

[00...

Embodiment 2

[0028] A kind of stainless steel anticorrosion sewage pipeline, the pipe wall thickness of pipeline is 2mm, and its manufacturing method comprises the steps:

[0029] (1) The end of the stainless steel coil is formed by plasma welding first, and then extrusion welding is used after forming;

[0030] (2) Use grinding equipment to level and grind the welded internal and external welds of the pipeline;

[0031] (3) Clean the internal and external pipelines, and perform bright solid-solution annealing after cleaning, where the solid-solution annealing temperature is 1040°C;

[0032] (4) Straightening and rounding the semi-finished pipeline to keep the pipeline straight and round;

[0033] (5) Carry out eddy current testing to see if there are unqualified and substandard products;

[0034] (6) Carry out air tightness inspection and hydraulic pressure test, and polish the inside of the tube to maintain the airtightness and water resistance of the stainless steel tube;

[0035...

Embodiment 3

[0037] A kind of stainless steel anticorrosion sewage pipeline, the pipe wall thickness of pipeline is 3mm, and its manufacture method comprises the steps:

[0038] (1) The end of the stainless steel coil is formed by plasma welding first, and then extrusion welding is used after forming;

[0039] (2) Use grinding equipment to level and grind the welded internal and external welds of the pipeline;

[0040] (3) Clean the internal and external pipelines, and perform bright solid solution annealing after cleaning, where the solid solution annealing temperature is 1050°C;

[0041] (4) Straightening and rounding the semi-finished pipeline to keep the pipeline straight and round;

[0042] (5) Carry out eddy current testing to see if there are unqualified and substandard products;

[0043] (6) Carry out air tightness inspection and hydraulic pressure test, and polish the inside of the tube to maintain the airtightness and water resistance of the stainless steel tube;

[0044] ...

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Abstract

The invention discloses a stainless steel corrosion-resistant sewage pipeline and a manufacturing method thereof. The thickness of the pipe wall of the stainless steel corrosion-resistant sewage pipeline is 0.5-3mm. The manufacturing method of the stainless steel corrosion-resistant sewage pipeline comprises the following steps: firstly, welding a stainless steel coil end, flatting and polishing; secondly, cleaning the interior and the exterior of the pipeline, brightening, and performing solution annealing; straightening and rounding a semifinished pipeline so as to keep the straightness and the roundness of the pipeline; thirdly, performing eddy current flaw detection to separate out an unqualified substandard product; performing air tightness test and water pressure test, and polishing the interior of the pipeline to keep the air tightness and waterproofness of the stainless steel pipeline; and finally, moulding and packaging. The stainless steel corrosion-resistant sewage pipeline is reasonable in structure; through a welding-seam-free process, the manufacturing process is simple; characteristics of stainless steel itself are fully embodied; and the problem that the conventional corrosion-resistant pipeline is high in maintenance cost is solved.

Description

[0001] technical field [0002] The invention belongs to the technical field of pipeline manufacturing, and in particular relates to a stainless steel anti-corrosion sewage pipeline and a manufacturing method thereof. Background technique [0003] At present, the anti-corrosion pipelines on the market usually use carbon steel anti-corrosion pipelines. The usual method is to apply a layer of anti-corrosion coating on the surface of the pipelines. This will increase the maintenance costs in the future and the maintenance costs will be high. Contents of the invention [0004] Purpose of the invention: In view of the deficiencies in the prior art, the present invention proposes a stainless steel anti-corrosion sewage pipe with simple manufacture and low maintenance cost and its manufacturing method. [0005] Technical solution: a stainless steel anti-corrosion sewage pipe according to the present invention, the pipe wall thickness of the pipe is 0.5-3mm. [0006] A method for...

Claims

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Application Information

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IPC IPC(8): F16L9/17B23P15/00
Inventor 陈步跃陈军黄飞
Owner NANTONG YAOLONG METAL MFG
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