Uses of stainless steel pipes
release time：
2025-05-23 17:26
1. 200 series stainless steel pipes
201/202
Chemical composition: chromium-nickel-manganese austenitic stainless steel
Features: low cost, suitable for scenes with low requirements for corrosion resistance
Applications: decorative materials, furniture frames, etc.
2. 300 series stainless steel pipes
304/304L/304H
304: Contains 18% chromium and 8% nickel, has both corrosion resistance, weldability and formability, and is widely used in food equipment, plumbing pipes, architectural decoration, etc.
304L: Ultra-low carbon design, stronger resistance to intergranular corrosion, suitable for mechanical structural parts that cannot be solution treated after welding
304H: Higher carbon content, better high temperature performance than 304, used in high temperature environments such as boiler parts
316/316L
Adding molybdenum element, the ability to resist pitting corrosion and reducing media is significantly improved
Applications: Marine environment equipment, chemical reaction vessels, medical devices
Contains titanium, excellent resistance to high temperature oxidation, mainly used in aviation, heat exchangers and other fields
3. Duplex stainless steel pipe
2205/2507
Features: ferrite-austenite duplex structure, high strength and resistance to chloride stress corrosion
Application: desalination equipment, petrochemical pipelines
4. Super austenitic stainless steel pipe
904L
Contains copper (1.5%), excellent resistance to reducing acids such as sulfuric acid and phosphoric acid
Application: chemical equipment, hydrometallurgical reactors
5. Special purpose grades
409: Automobile exhaust system (low-cost ferritic stainless steel)
430: Home appliance parts, architectural decoration (ferritic stainless steel)
630 (17-4PH): High-strength martensitic precipitation hardening stainless steel, used for aerospace fasteners
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