Stainless Steel 309 U Tubes, ss 309 Stainless Steel U Tube Manufacturer, SS 309 U Tube Supplier, SS 309U Tube Exporter, Stainless Steel 309Precision Tubing, SS 309Small Diameter Tube ,SS 309U Tubes
Sumer Metal Industries Private Limited manufactures premium Stainless Steel 309 U Tubes, purpose-built for high-temperature heat-exchange applications. Produced using tightly controlled melting and forming processes, our 309 U Tubes are engineered to deliver reliable service in furnaces, boilers, petrochemical heaters and industrial heat exchangers where oxidation resistance and creep strength at elevated temperatures are required.
As a manufacturer, supplier and exporter, Sumer Metal Industries emphasizes consistent metallurgical quality — from raw material traceability to finishing. Our production flow includes raw-material inspection, hot/cold forming into U shapes, stress-relief annealing, ultrasonic and eddy-current testing, and final dimensional inspection to ensure every U Tube meets international standards and client drawings.
Sumer Metal exports 309 U Tubes worldwide, with established markets in Oman, Qatar, Saudi Arabia, the UAE, Kuwait, Spain, Germany, the USA, Canada and multiple regions across Africa. We supply bulk orders for EPC contractors, OEMs and fabricators, and offer tailored logistical solutions (DAP/FOB/CIF) and packing suitable for long sea shipments.
Typical applications for SS 309 U Tubes include high-temperature heat exchangers, convection sections in boilers, furnace recuperators, petrochemical process heaters, and other environments where elevated temperature strength and oxidation resistance are important. The alloy’s higher chromium and nickel content vs. 304/316 gives it improved scaling resistance at temperatures up to ~1050–1100°C in many atmospheres.
Specification of Stainless Steel 309 U Tubes
| Product | Grade | Common Standards | Finish | Typical Forms |
|---|---|---|---|---|
| Stainless Steel 309 U Tubes | 309 (309S variant available) | ASTM A213 / A249 / A269 (tube specifications dependent on application) | Pickled & passivated / Bright annealed / Mill finish | U-bends (single/double), straight tube sections for bending |
Quality assurance at Sumer Metal includes full chemical and mechanical test reports (CMTR), non-destructive testing (NDT) as requested, dimensional certifications, and compliance with common tube standards. We also provide custom bends, special end finishes, and tolerances to meet client heat-exchanger tube-sheet and U-bend pocket requirements.
Chemical Composition of Stainless Steel 309 U Tubes
| Element | Typical % (wt) |
|---|---|
| Carbon (C) | ≤ 0.20 |
| Chromium (Cr) | 22.0 – 24.0 |
| Nickel (Ni) | 12.0 – 15.0 |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.03 |
| Iron (Fe) | Balance |
They promise competitive pricing, superior product quality, prompt customer service, and timely delivery. They leverage their infrastructure and inventory to support urgent and complex client requirements, also offering third-party inspection and secure packaging
Specification of Stainless Steel 309 U Tubes
| Product | Grade | Common Standards | Finish | Typical Forms |
|---|---|---|---|---|
| Stainless Steel 309 U Tubes | 309 (309S variant available) | ASTM A213 / A249 / A269 (tube specifications dependent on application) | Pickled & passivated / Bright annealed / Mill finish | U-bends (single/double), straight tube sections for bending |
🏭 Industry & Application
- ✅ SS 309 U Tubes for Medical Industry
- ✅ SS 309 U Tubes for Chemical Processing
- ✅ SS 309 Tubes for U Lines
- ✅ Stainless Steel 309 U Tubes for Gas & Liquid Flow
- ✅ SS 309 Tubes for Heat Exchangers
❓ Frequently Asked Questions (FAQs)
1. What are Stainless Steel 309 U Tubes mainly used for?
Stainless Steel 309 U Tubes are designed for high-temperature applications such as heat exchangers, boilers, petrochemical heaters, and furnace systems. Their high chromium and nickel content provide excellent resistance to oxidation and scaling at elevated temperatures.
2. What is the difference between SS 309 and SS 309S U Tubes?
SS 309 has a slightly higher carbon content compared to SS 309S. The 309S grade has a lower carbon level, which minimizes carbide precipitation during welding, making it more suitable for applications where welding and resistance to intergranular corrosion are critical.
3. In which countries does Sumer Metal Industries export Stainless Steel 309 U Tubes?
Sumer Metal Industries exports Stainless Steel 309 U Tubes globally, with strong markets in Oman, Qatar, Saudi Arabia, the UAE, Kuwait, Spain, Germany, the USA, Canada, and several regions across Africa.
4. What documents and certifications are provided with SS 309 U Tubes?
Each shipment comes with Mill Test Certificates (MTC/EN 10204 3.1), chemical and mechanical test reports, dimensional inspection records, and export documentation such as packing lists, invoices, and certificates of origin. Non-destructive testing (NDT) reports can be provided upon request.
5. Can Stainless Steel 309 U Tubes be customized in size and bend radius?
Yes, Sumer Metal Industries offers customized SS 309 U Tubes in various outside diameters, wall thicknesses, lengths, and U-bend radii to suit specific heat exchanger designs. Custom packaging and labeling are also available for export shipments.
Stainless Steel 309 U Tubes exporter
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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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