Will stainless steel pipe rust
time2025/08/27
- Stainless steel has the ability to resist corrosion by forming a thin, strong, and stable oxide film (protective film) on its surface, which prevents oxygen atoms from continuing to infiltrate and oxidize. Once for some reason, this thin film is continuously damaged, oxygen atoms in air or liquid will continuously infiltrate, or iron atoms in metal will continuously be damaged, forming loose iron oxide, and the metal surface will also be continuously corroded.
Why does stainless steel also rust?
When brown rust spots (dots) appear on the surface of stainless steel pipes, people are greatly surprised: they believe that "stainless steel does not rust, and if it rusts, it is not stainless steel anymore. It may be a problem with the steel". In fact, this is a one-sided misconception about stainless steel.
Stainless steel can also rust under certain conditions. Stainless steel has the ability to resist atmospheric oxidation, namely stainless steel, and also has the ability to corrode in media containing acid, alkali, and salt, namely corrosion resistance. But the magnitude of its corrosion resistance varies with the chemical composition, additive state, usage conditions, and environmental medium type of the steel itself. Like 304 steel pipe, it has absolutely excellent corrosion resistance in dry and clean atmosphere, but when moved to coastal areas, it will quickly rust in sea fog containing a large amount of salt; And 316 steel pipes perform well. Therefore, not any type of stainless steel can resist corrosion and rust in any environment.
Stainless steel has the ability to resist corrosion by forming a thin, strong, and stable oxide film (protective film) on its surface, which prevents oxygen atoms from continuing to infiltrate and oxidize. Once for some reason, this thin film is continuously damaged, oxygen atoms in air or liquid will continuously infiltrate, or iron atoms in metal will continuously be damaged, forming loose iron oxide, and the metal surface will also be continuously corroded.
Destruction of stainless steel surface facial mask is common in daily life
1. The surface of stainless steel is covered with dust or foreign metal particles containing other metal elements. In humid air, the condensed water between the attachments and the stainless steel forms a micro battery, triggering an electrochemical reaction and damaging the protective film, which is called electrochemical corrosion.
2. Organic substances such as vegetables, noodle soup, and phlegm adhere to the surface of stainless steel, forming organic acids in the presence of water and oxygen. Over time, these organic acids corrode the metal surface.
3. The surface of stainless steel adheres to substances containing acids, alkalis, and salts (such as alkali water and lime water splashes from decorating walls), causing local corrosion.
4. In polluted air (such as atmosphere containing a large amount of sulfides, carbon oxides, and nitrogen oxides), encountering condensed water can form sulfuric acid, nitric acid, and acetic acid droplets, causing chemical corrosion.
All of the above situations can cause damage to the protective film on the surface of stainless steel, leading to rusting.
How to prevent stainless steel from rusting
To ensure that the metal surface is permanently shiny and not corroded, we suggest:
1. It is necessary to regularly clean and scrub the surface of decorative stainless steel to remove attachments and eliminate external factors that may cause decoration.
2. The coastal area should use 316 stainless steel, which can resist seawater corrosion.
3. Some stainless steel pipes on the market do not meet the corresponding national standards for chemical composition and cannot meet the requirements of 304 material. Therefore, it can also cause rust, which requires users to carefully choose products from reputable manufacturers.
Why choose Youfa brand stainless pipes ?
Youfa Advantages:
As a leading manufacturer in China’s steel pipe industry, Youfa Group has established its reputation through robust production capabilities, innovative processing technologies, stringent product certifications, and a commitment to sustainable manufacturing.
1. Large scale manufacturing
Quality control: Youfa is a large enterprise group that integrates the production and sales of various steel products. Every process from raw material entry to finished pipeline manufacturing has strict inspections.
High production capacity: YOUFA's high output means it can handle very large orders and ensure stable supply, which is crucial for large construction projects, manufacturing plants, and original equipment manufacturers (OEMs) that require reliable, high-volume suppliers.
2. Cost effectiveness and competitive pricing
As major manufacturers in China, they benefit from economies of scale and lower management and production costs. This is one of the main reasons why buyers choose Youfa, which is very competitive in domestic and international markets.
3. Wide product range and integrated production
Youfa produces various types of stainless steel pipes to meet various needs:
Stainless Welded Pipe: More cost-effective in structural applications, low-pressure fluid transport, and building applications.
Standard grades: such as 304/304L and 316/316L, covering the vast majority of corrosion-resistant applications.
At the same time, Youfa has collaborated with multiple seamless stainless steel pipe (SMLS) factories to integrate supply chain resources, providing customers with a one-stop solution for various stainless steel pipes suitable for medium and high pressure applications in oil and gas, chemical processing, and power generation, including duplex stainless steel, high temperature grades, and other alloys suitable for more demanding environments.
4. Certifications
As a reputable Chinese manufacturers, Youfa invest heavily in obtaining international certifications to prove their quality and access global markets.
ISO 9001: Quality Management System standard.
Third-Party Inspection: They are accustomed to working with third-party inspection companies (like SGS, BV, Lloyd's) to verify quality for international clients.
5. Global Reach and Export Experience
Youfa has a well-established export network and experience shipping to markets in Southeast Asia, the Middle East, Europe, and the Americas. Better understand international logistics, documentation, and trade regulations.