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ASTM A789 Duplex 2205 Seamless Steel Tube For Marine Industry
| MOQ: | 1pc |
| Price: | Above 2usd/kg |
| Standard Packaging: | Bundles in woven bag/plywood case With plastic end caps |
| Delivery Period: | 2 weeks/container |
| Payment Method: | L/C,D/A,D/P,T/T,Western Union,MoneyGram |
| Supply Capacity: | 1000 ton/month |
2205 Seamless Steel Tube
,ASTM A789 Seamless Steel Tube
,Marine Industry Duplex Steel Tube
| Attribute | Value |
|---|---|
| Material | 2205 |
| Certificates | ISO, PED |
| Package | Woven Bag |
| Type | Seamless |
| Standard | ASTM A789 |
| Inspection | 100% |
| Grade | S31803, 2205, 2507, TP316; TP316L; TP304; TP304H; TP304L; TP321; TP321H; TP317L; TP310S; TP347H, etc. |
|---|---|
| Standard | ASTM A789, etc |
| Size | SMALOD: 1/4" - 2" Length: Max. 6M |
| Manufacturing Method | Seamless (Cold-drawn) |
| Surface Treatment | Annealed & Pickled/Polished |
| Length | Standard 6m / Customized available |
| Certification | ISO, PED certified |
For high-performance materials such as 2205 duplex steel, we implement strict quality control procedures to ensure that their performance meets standards. We use 100% PMI for material identification to prevent mixing. Each tube undergoes hydrostatic testing or non-destructive testing to ensure its pressure bearing capacity.
At the same time, we conduct precise inspections on the dimensional tolerances and surface quality of our products, and can provide metallographic analysis, mechanical performance testing, etc. according to customer requirements to ensure that every batch of products delivered complies with ASTM A789 standards.
The unique feature of duplex stainless steel is that its metallographic structure is composed of approximately 50% austenite and 50% ferrite. This dual phase structure combines the advantages of two types of stainless steel:
- Good toughness and weldability of austenitic stainless steel
- High strength and excellent stress corrosion cracking (SCC) resistance of ferritic stainless steel
This "win-win" characteristic enables duplex steel to provide a more reliable and economical solution than conventional austenitic stainless steel in harsh corrosive environments.
2205 is currently the most widely used duplex stainless steel grade. Its yield strength is more than twice that of conventional austenitic stainless steels such as 316L, which means that thinner wall thickness designs can be used in pressure applications, effectively reducing structural weight and saving costs.
Its high chromium (Cr), molybdenum (Mo), and nitrogen (N) content brings extremely strong resistance to pitting corrosion and crevice corrosion (PREN ≥ 35). Especially outstanding is that it is almost immune to stress corrosion cracking (SCC) in chloride containing environments, solving a major problem for traditional stainless steel in marine and other environments.
2205 duplex steel pipe is an ideal choice for the marine industry. Its excellent resistance to seawater corrosion and high-strength characteristics make it widely used in various key systems:
- Process pipelines, seawater cooling systems, fire water systems
- Ballast water systems of offshore oil platforms
- Structural components and pipelines on ships and chemical transport vessels
- Core material of high-pressure pipelines and heat exchangers in seawater desalination (RO) equipment
These applications ensure the long-term, stable, and safe operation of the equipment in harsh marine environments.
