Duplex Steel S31803 Clad Tubes, Duplex Steel 31803 Clad Tubes, 31803 Duplex Steel Clad Tube Manufacturer, Duplex Steel 31803 Clad Tube Supplier, Duplex Steel 31803 Clad Tube Exporter, Duplex Steel 31803 Precision Tubing, Duplex Steel 31803 Small Diameter Tube ,Duplex Steel 31803 Clad Tubes
Duplex Steel S31803 clad tubes offered by Sumer Metal Industries Private Limited are engineered for industries that demand a balance of high strength and superior corrosion resistance. The S31803 (commonly referenced as Duplex 2205 family) clad tubes combine a duplex (ferritic–austenitic) base with a corrosion-resistant cladding to deliver excellent resistance to pitting, crevice corrosion and chloride stress corrosion cracking — making them ideal for oil & gas, chemical processing, desalination, and marine environments.
As a manufacturer, supplier and exporter, Sumer Metal Industries produces S31803 clad tubes with rigorous metallurgical control: the core/backing material maintains duplex microstructure for strength while the outer cladding (selected corrosion-resistant alloy) provides the required surface protection. Products are supplied with mill test certificates (MTC), NDT reports where applicable, and traceability from melt to finished tube—ensuring consistent quality for international customers in Oman, Qatar, Saudi Arabia, the UAE, Kuwait, Spain, Germany, the USA, Canada and multiple regions across Africa.
The typical chemistry of the duplex S31803 family centers on ~21–23% chromium, ~2.5–3.5% molybdenum, ~4.5–6.5% nickel and low carbon with added nitrogen to boost pitting resistance and strength. These alloying elements give Duplex 2205-class materials materially higher yield strength (roughly double that of 300-series austenitics) while keeping excellent toughness and weldability when processed correctly.
Sumer Metal Industries manufactures cladded tubes to common international tube specifications (e.g., ASTM A789/A790 for duplex tubing/piping, ASTM A240 for sheet/plate used in clad manufacture where applicable) and can supply seamless or welded tubes, U-bend coils (U-tube bundles), and custom lengths to project requirements. Typical applications include condenser/heater tubing, heat exchangers, process piping, and subsea manifolds where the combination of structural strength and corrosion-resistant surface is required.
Specification of Duplex Steel S31803 Clad Tubes
| Property | Specification |
|---|---|
| Grade | Duplex Steel S31803 (UNS S31803 / 2205, EN 1.4462) |
| Standards | ASTM A789 / ASTM A790, ASTM A240 (for cladding), ASME, EN standards |
| Product Form | Clad Tubes – Seamless / Welded, Straight Lengths, U-bent Tubes |
| Outside Diameter (OD) | 6.35 mm (1/4") to 50.8 mm (2") or custom as per requirement |
| Wall Thickness (WT) | 0.5 mm to 5.0 mm (customizable) |
| Length | Up to 12 meters (standard); custom cut lengths available |
| Surface Finish | Pickled, Bright Annealed, Polished or as specified |
| Cladding Options | Stainless Steel, Nickel Alloys, Copper Alloys or as per project requirement |
| End Finish | Plain Ends, Beveled Ends, Threaded Ends |
| Testing | Hydrostatic, Eddy Current, Ultrasonic, PMI, IGC, Mechanical & Chemical tests |
| Certifications | EN 10204 3.1 / 3.2, NACE MR0175/ISO 15156, PED, MTC available |
| Applications | Heat Exchangers, Condensers, Desalination Plants, Oil & Gas, Chemical Processing, Marine Industry |
Mechanically, Duplex 2205 (S31803) shows high tensile strength (typical UTS ≈ 600–640 MPa), 0.2% proof/yield ≈ 440–480 MPa and elongation around 20–25% depending on product form and heat treatment. Hardness values and specific elevated-temperature properties vary by heat treatment and cladding thickness; Sumer Metal Industries provides full test reports showing the mechanical properties for each heat.
Chemical Composition of Duplex Steel S31803 Clad Tubes
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 21.0 – 23.0 |
| Nickel (Ni) | 4.5 – 6.5 |
| Molybdenum (Mo) | 2.5 – 3.5 |
| Nitrogen (N) | 0.08 – 0.20 |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
| Carbon (C) | ≤ 0.030 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.020 |
| Iron (Fe) | Balance |
With a proven track record as a Duplex Steel S31803 Clad Tubes exporter in over 30 countries, Sumer Metal Industries ensures global availability, third-party inspection support, and client-specific customization. Our wide export network combined with strict quality standards has made us a preferred choice for SS 31803 tubing worldwide.
Specification of Duplex Steel S31803 Clad Tubes
| Property | Specification |
|---|---|
| Grade | Duplex Steel S31803 (UNS S31803 / 2205, EN 1.4462) |
| Standards | ASTM A789 / ASTM A790, ASTM A240 (for cladding), ASME, EN standards |
| Product Form | Clad Tubes – Seamless / Welded, Straight Lengths, U-bent Tubes |
| Outside Diameter (OD) | 6.35 mm (1/4") to 50.8 mm (2") or custom as per requirement |
| Wall Thickness (WT) | 0.5 mm to 5.0 mm (customizable) |
| Length | Up to 12 meters (standard); custom cut lengths available |
| Surface Finish | Pickled, Bright Annealed, Polished or as specified |
| Cladding Options | Stainless Steel, Nickel Alloys, Copper Alloys or as per project requirement |
| End Finish | Plain Ends, Beveled Ends, Threaded Ends |
| Testing | Hydrostatic, Eddy Current, Ultrasonic, PMI, IGC, Mechanical & Chemical tests |
| Certifications | EN 10204 3.1 / 3.2, NACE MR0175/ISO 15156, PED, MTC available |
| Applications | Heat Exchangers, Condensers, Desalination Plants, Oil & Gas, Chemical Processing, Marine Industry |
🏭 Industry & Application
- ✅ Duplex Steel S31803 Clad Tubes for Medical Industry
- ✅ Duplex Steel S31803 Clad Tubes for Chemical Processing
- ✅ Duplex Steel S31803 Tubes for Clad Lines
- ✅ Duplex Steel S31803 Clad Tubes for Gas & Liquid Flow
- ✅ Duplex Steel S31803 Tubes for Heat Exchangers
❓ Frequently Asked Questions (FAQs)
- Q1: What keywords should I target for Duplex S31803 clad tubes?
- A1: Target long-tail and buyer-intent keywords such as "Duplex S31803 clad tubes supplier", "Duplex 2205 clad heat exchanger tubes", "S31803 cladded tubes exporter India", and geo-targeted phrases like "Duplex clad tubes supplier UAE".
- Q2: How should I structure product pages to rank for industrial buyers?
- A2: Use a clear H1 with product name, short technical summary, specification tables (chemistry, mechanicals), downloadable PDF datasheet, certifications, export markets, and an FAQ for common procurement questions. Include schema/structured data for Product and FAQ to help search engines index key details.
- Q3: What meta tags and on-page content help conversion?
- A3: Use a concise meta description with primary keyword and unique selling points (e.g., "manufacturer & exporter, MTC & export-ready packaging"), include visible contact CTA, and ensure mobile-friendly pages with fast load times and compressed datasheets.
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At Sumer Metal Industries Pvt. Ltd., we follow a zero-defect policy by implementing stringent quality checks, using certified raw materials, and continuously improving our processes to deliver reliable and consistent tubing solutions
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We ensure product excellence through precision engineering, process integrity, and a culture of quality, making us a trusted name in the global Clad and Clad tube industry.
59/61 1st Kumbharwada Lane, Near Gol Dewel, Mumbai- 400004
+91 9820052953
+91 9082493260
info@sumermetal.in
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