Stainless steel materials have excellent corrosion resistance and advanced technology, and their service life can reach 70 to 100 years. This article popularizes the key factors that affect the service life of stainless steel pipe fittings, such as material, forming process, wall thickness and solution treatment.
Stainless steel materials have a long service life. Foreign application experience shows that the service life of stainless steel pipe fittings can reach at least 70 years. Stainless steel pipe fittings are widely used in industry. The most prominent advantage is corrosion resistance. If stainless steel pipes can be used and maintained correctly during use, the service life can be effectively extended. The main factors affecting the key life of stainless steel are mainly the following four:
1.Material influence
Common materials include 304, 304L, 316, 316L, etc. Low-carbon type (such as 304L) has stronger corrosion resistance, and 316/316L contains molybdenum, which is suitable for marine and highly corrosive environments. High-quality materials have high stability. Although low-quality materials are low in price, they are easy to affect the service life.
2. Influence of forming process
The main processes are cold extrusion and bulging. Cold extrusion has high precision and smooth surface, which can enhance local thickness and improve durability. The bulging process has stable forming and is suitable for complex structures, but the wall thickness in some areas will be thinned, which requires reasonable design.
3. Influence of wall thickness
Wall thickness is the key to determining the strength and durability of the connection. Bending and forming during the production process can easily cause local wall thickness changes. If it is less than the standard requirements, it will affect the crimping, impact resistance and corrosion resistance, and increase the risk of water leakage. Therefore, the wall thickness of the pipe and the pipe fittings should match to ensure the reliability of the connection. MTSCO has a professional quality inspection team that conducts a series of inspections and tests on pipe fittings, including conventional appearance, PMI, size, quantity, non-destructive testing, etc. For welded pipe fittings, we conduct 100% ultrasonic or radiographic testing on raw materials and pipe fittings to ensure that there is no problem with the wall thickness of the pipe fittings.
4. Influence of solution treatment
Through 1050℃ solution heat treatment, the processing stress can be released, the resistance to intergranular corrosion and fatigue can be enhanced. The toughness of the material can be restored, and the long-term safety and aesthetics can be improved.
MTSCO is deeply engaged in the manufacturing of stainless steel pipes and fittings, and its products cover a variety of high-performance materials such as austenitic steel, duplex steel and nickel alloy. MTSCO continues to participate in large-scale international engineering projects and has won the trust of customers. The company and its strategic partner factories have passed ISO, PED, M650 and other authoritative certifications, and are committed to providing high-quality, traceable, customized stainless steel products and services to global customers.
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