Common Causes of 304 Stainless Steel Pipe Corrosion
1 Chemical corrosion1.1 Surface contamination: attached to the surface of the oil, dust and acid, alkali, salt and other under certain conditions into the corrosive medium, react chemically with some elements of stainless steel pipe, chemical corrosion and rust.
1.2 Surface scratches: various scratch destruction of the passive film, reduced ability to make stainless steel protection, prone to chemical reaction medium, chemical corrosion and rust.
1.3 Cleaning: Cleaning is not clean after pickling passivation resulting residue retention, direct corrosion of stainless steel (chemical etching).
2 Electrochemical Corrosion
2.2.1 Carbon pollution: in contact with the corrosive medium scratches caused by carbon steel with a galvanic cell to produce electrochemical corrosion.
2.2.2 Cutting: cutting slag, spatter and so easy to produce electrochemical corrosion rust and corrosion medium adhesion material form the original cells.
2.2.3 Roasted school: Ingredients flame heating zone to produce electrochemical corrosion and microstructure changes and uneven, and corrosive media, a galvanic cell.
2.2.4 Welding: physical defects (undercuts, pores, cracks, lack of fusion, incomplete penetration, etc.) and chemical defects in the weld zone (coarse grains, the grain boundary chromium depletion, segregation, etc.) and corrosive media, a galvanic cell generated electrochemical corrosion.
2.2.5 Material: stainless steel chemical defects (uneven composition, S, P impurities, etc.) and physical surface defects (loose, sand holes, cracks, etc.) in favor of a galvanic cell with the corrosive medium to produce electrochemical corrosion.
2.2.6 Passivation: stainless steel pickling passivation effect caused by bad or uneven surface passivation film is thin, easy to the formation of electrochemical corrosion.
2.2.7 Cleaning: product and stainless steel parts remaining residue with a stainless steel pickling passivation chemical corrosion formation of electrochemical corrosion.
2.3 stress concentration is liable to cause stress corrosion In short, due to its special stainless steel microstructure and surface passivation film, making it generally more difficult to react chemically with the medium is corrosive, but not not to be under any conditions corrosion. In corrosive media and incentives (such as scratches, splashes, cutting slag, etc.) the presence of stainless steel and corrosion can occur to produce medium slow chemical corrosion and electrochemical reactions, but under certain conditions the corrosion rate is quite fast corrosion phenomenon, especially pitting and crevice corrosion. Corrosion mechanism of stainless steel mainly electrochemical corrosion.
Therefore, industrial stainless steel pipe products should take all effective measures in the course of processing operations, to avoid corrosion conditions and incentives to produce. In fact, many corrosion conditions and incentives (such as scratches, splashes, cutting slag, etc.) also have a significant adverse effect on the appearance of product quality, and should also to be overcome.
Hunan Great Steel Pipe Co.,Ltd
Address: Hunan Steel Industrial Zone,No.9 Xiangfu Road, Yuhua District, Changsha, Hunan, China
Postcode:410116
Tel:0086-731-88678502
Fax:0086-731-88678508
E-mail: info@hunantube.com
Stainless Steel Pipe:
http://www.hunantube.com/products/Stainless-Steel-Pipe.html
Industrial Stainless Steel Pipe:
http://www.hunantube.com/products/Industrial-Stainless-Steel-Pipe.html
Hunan Great Steel Pipe Co.,Ltd is a world-class production and service provider of submerged arc straight seam welded pipe as the first subsidiary of Shinestar Group. Hunan Great Steel Pipe Co.,Ltd pays more attention to in the pipeline engineering research areas as a pioneer of China Petroleum Pipeline & Gas Pipeline Science Research Institute, Such as: the use of oil and gas pipelines, pipe welding technology innovation, high-end plumbing materials research and development, as well as special tools technological innovation pipeline construction, pipeline corrosion protection science and technology research, science and technology research pipeline non-destructive testing, pipeline quality assessment, and research pipeline standards and so on. In the future, we will try to use new technology to create new business value and to contribute to research and product development for the pipeline.
22nd Floor, Royal Wing Tower, Long Champ International Building, No.9 Xiangfu Road, Changsha
No.9 Xiangfu Road,
This release was published on openPR.
Permanent link to this press release:
Copy
Please set a link in the press area of your homepage to this press release on openPR. openPR disclaims liability for any content contained in this release.
You can edit or delete your press release Common Causes of 304 Stainless Steel Pipe Corrosion here
News-ID: 539158 • Views: …
More Releases from Hunan Great Steel Pipe Co.,Ltd
HUNAN GREAT STEEL PIPE CO., LTD
Quality products as competitiveness of Hunan Great Steel Pipe Co.,Ltd. Our main products include: carbon steel seamless pipe, carbon steel welded pipe, stainless steel pipe, pipe fittings, which is variety types and full range specifications, moreover, strictly in accordance with international standards, like: ISO certification, CE certification. At the same time, we are able to offer value-added steel services, including: hot dip galvanized, anti-corrosion treatment, pipe cutting, or other customized…
How to Detect High Quality Coating Steel Pipe
Coating steel pipe is now a very high rate of a pipe, we racked our brains, in order to allow you to pick a better coating steel pipe to provide you with a test method.
1.Impact test
In addition to the appropriate room temperature range, but also in accordance with the relevant national standards, the impact of its operation, in order to see the changes in the coating.
2. Visual inspection
This is the…
How to Strengthen the Stability of SSAW Steel Pipe
1) Small and medium-sized steel, wire rod, steel, medium diameter steel pipe, wire and wire rope, etc., can be stored in a well-ventilated shed, but must be under the pad.
2) Some small steel, thin steel, steel, silicon steel, small diameter or thin-walled steel pipe, all kinds of cold-rolled, cold-drawn steel and high prices, easy to corrode the metal products can be stored.
3) Storage of SSAW steel pipe(Spirally Submerged Arc Welded…
Shortcomings of Duplex Stainless Steel Pipe
Compared with austenitic stainless steel pipe, duplex stainless steel pipe's shortcomings are as follows:
1) the universality of the application and multi-faceted as austenitic stainless steel, for example, its use temperature must be controlled at 250 degrees Celsius.
2) its plastic toughness than the austenitic stainless steel low, cold, hot processing technology and forming performance as austenitic stainless steel.
3) the existence of moderate temperature brittle area, the need for strict control of…
More Releases for Stainless
Stainless Steel Market 2020 Growth by key players Jindal Stainless, Aperam Stain …
Global Market Insights, Inc., announces an ongoing comprehensive report on the Stainless Steel Market.
This report provides an exhaustive account of the industry including:
o Stainless Steel Market size, annual forecast from 2020 to 2026
o Major stainless steel industry trends, technology evolution, economic indicators and business challenges
o Regulatory and geopolitical trends impacting the industry
o Business drivers and pitfalls impacting key regional markets
o Competitive landscape of the industry and detailed profiles on the…
What's driving the Stainless Steel Market Growth? Jindal Stainless, ArcelorMitta …
North America led by U.S. stainless steel market may witness significant growth by increasing application scope in medical, oil & gas and heavy industries. High-grade stainless steel plays vital role in construction of valves, pipes, and storage tanks to provide resistance to corrosion over a wider range of temperatures. Growing adoption of stainless steel in oil & gas industry for off-shore oil rigs is expected to boost the overall market…
What's driving the Stainless Steel Market Growth? Jindal Stainless, ArcelorMitta …
Europe driven by France, UK and Germany stainless steel market may witness high growth owing to positive application outlook in automotive industry owing to its high strength that allows for thinner containers, saving fuel costs, whereas its resistance to corrosion helps in minimizing the maintenance and cleaning costs.
Asia Pacific led by China, India and Japan stainless steel market should witness significant growth owing to rise in demand for renewable energy…
What's driving the Stainless Steel Market Growth? Jindal Stainless, ArcelorMitta …
Europe driven by France, UK and Germany stainless steel market may witness high growth owing to positive application outlook in automotive industry owing to its high strength that allows for thinner containers, saving fuel costs, whereas its resistance to corrosion helps in minimizing the maintenance and cleaning costs.
North America led by U.S. stainless steel market may witness significant growth by increasing application scope in medical, oil & gas and heavy…
What's driving the Stainless Steel Market Trends? Jindal Stainless, ArcelorMitta …
Europe driven by France, UK and Germany stainless steel market may witness high growth owing to positive application outlook in automotive industry owing to its high strength that allows for thinner containers, saving fuel costs, whereas its resistance to corrosion helps in minimizing the maintenance and cleaning costs.
North America led by U.S. stainless steel market may witness significant growth by increasing application scope in medical, oil & gas and heavy…
Stainless Steel Welded Pipes Market | key player - Pohang Iron & Steel (Posco), …
Looking at the current market trends as well as the promising demand status of the “Stainless Steel Welded Pipes Market” it can be projected that the future years will bring out positive outcomes. This research report added by MRRSE on its online portal delivers clear insight about the changing tendencies across the global market. Readers can gather prime facets connected to the target market which includes product, end-use and application;…