Stainless Steel 309 Capillary Tubes, SS 309 Capillary Tubes, ss 309 Stainless Steel Capillary Tube Manufacturer, SS 309 Capillary Tube Supplier, SS 309Capillary Tube Exporter, Stainless Steel 309Precision Tubing, SS 309Small Diameter Tube ,SS 309Instrumentation Tubes
Sumer Metal Industries Private Limited is a trusted manufacturer, supplier, and exporter of high‑precision Stainless Steel 309 Capillary Tubes. With decades of experience and state-of-the-art production facilities, we specialize in ASTM A213 / ASTM A688 TP309seamless tubing, designed for instrumentation, thin‑wall precision, and high‑pressure applications. We maintain stringent quality control and deliver to clients across Oman, Qatar, Saudi Arabia, the UAE, Kuwait, Spain, Germany, USA, Canada, and numerous regions across Africa.
SWe cater to international industries with custom packaging, multi-language labeling, and export-ready certifications that comply with local and international import requirements. Our tubes are well accepted in overseas projects, EPCs, refineries, hospitals, labs, and instrumentation applications.
Company & Export Markets Sumer Metal Industries Private Limited is a reputable Indian manufacturer, supplier, and exporter of Stainless Steel 309 Capillary Tubes. The company serves a diverse international clientele, exporting to countries across the Middle East—such as Oman, Qatar, Saudi Arabia, UAE, and Kuwait—as well as Spain, Germany, the United States, Canada, and multiple regions across Africa.
Sumer Metal Industries specializes in a wide range of stainless steel capillary tubes, including grade 309, produced under standards such as ASTM A213 / A688 / A554. Available sizes include outer diameters from 0.35 mm to 6.35 mm and wall thicknesses ranging from 0.08 mm to 1.2 mm, with various finishes like bright annealed or polished
Specification of Stainless Steel 309 Capillary Tubes
| Property | Specification |
|---|---|
| Grade | Stainless Steel 309 (UNS S30900) |
| Standard | ASTM A213 / A269 / A632 / A789 |
| Form | Capillary Tubes |
| Outer Diameter (OD) | 0.25 mm to 6.35 mm |
| Wall Thickness | 0.08 mm to 1.0 mm |
| Length | As required (Standard: up to 6 meters or in coils) |
| Surface Finish | Bright Annealed / Polished |
| Manufacturing Process | Seamless / Welded (cold drawn) |
| Tensile Strength (min) | 550 MPa (80,000 psi) |
| Yield Strength (0.2% offset, min) | 205 MPa (30,000 psi) |
| Elongation | ≥ 35% |
| Hardness (Max) | 95 HRB (Rockwell B) |
| Density | 7.90 g/cm³ |
| Melting Range | 1388 – 1430 °C |
| Corrosion Resistance | Excellent – especially in high temperature settings |
| Max Service Temperature | ~1038°C (1900°F) in continuous service |
| Magnetic Properties | Slightly magnetic in cold worked condition |
| Applications | Thermocouples, Instrumentation, Gas lines, Precision Control Systems, Heat Exchangers |
Stainless Steel 309 Capillary Tubes are manufactured using high-precision processes such as TIG welding, seamless extrusion, and cold drawing to ensure tight dimensional tolerances and excellent surface finishes. These tubes are made in compliance with international standards like ASTM A213, ASTM A269, ASTM A554, and ASME SA213, ensuring high quality and performance consistency. Sumer Metal Industries uses advanced machinery and quality control systems to meet the stringent requirements of industries that rely on high-performance materials.
Chemical Composition of Stainless Steel 309 Capillary Tubes
| Element | Minimum (%) | Maximum (%) |
|---|---|---|
| Carbon (C) | — | 0.20 |
| Manganese (Mn) | — | 2.00 |
| Phosphorus (P) | — | 0.045 |
| Sulfur (S) | — | 0.030 |
| Silicon (Si) | — | 1.00 |
| Chromium (Cr) | 22.0 | 24.0 |
| Nickel (Ni) | 12.0 | 15.0 |
| Iron (Fe) | Balance | 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 Capillary Tubes
| Product Name | Stainless Steel 309 Capillary Tubes |
| Grade | SS 309 / UNS S30900 / WNR 1.4828 |
| Standard Specifications | ASTM A213 / A269 / A312 / A632 / EN 10216-5 / JIS G3463 |
| Outer Diameter (OD) | 0.3 mm to 6.35 mm (custom sizes available) |
| Wall Thickness | 0.08 mm to 1.5 mm |
| Length | 6 meters max (custom cut lengths on request) |
| Tube Type | Seamless / Welded / Bright Annealed |
| Surface Finish | Bright Annealed, Polished, Cleaned & Passivated |
| Form | Coiled, Straight, U-bent, Custom shapes |
| Temperature Range | Up to 1093°C (2000°F) |
| End Type | Plain End, Beveled End, Threaded |
| Tolerances | As per ASTM / DIN / EN standards |
| Testing & Certifications | Hydrostatic Test, Eddy Current Test, PMI, IGC, TC from NABL-approved labs |
| Packaging | Bubble wrapped, plastic caps, wooden boxes/crates for export |
| Applications | Heat exchangers, thermocouples, instrumentation, refineries, petrochemical |
🏭 Industry & Application
- ✅ SS 309Capillary Tubes for Medical Industry
- ✅ SS 309Capillary Tubes for Chemical Processing
- ✅ SS 309Tubes for Instrumentation Lines
- ✅ Stainless Steel 309 Capillary Tubes for Gas & Liquid Flow
- ✅ SS 309Tubes for Heat Exchangers
❓ Frequently Asked Questions (FAQs)
Q1:What are common uses of SS‑309 capillary tubes?
These tubes are widely used in high-temperature and corrosive environments such as thermocouple protection, instrumentation, heating systems, and industrial furnace components.
Q2: How does SS‑309 differ from SS‑309S?
SS‑309S features a lower carbon content (≤ 0.08%) compared to SS‑309 (≤ 0.20%), offering improved weldability and reduced carbide precipitation; other elements remain similar.
Q3: What are key export advantages of sourcing from Sumer Metal Industries?
Sumer Metal offers proven global logistics, adherence to ASTM standards, customizable tube finishes, and a strong presence in Middle Eastern, European, North American, and African markets for reliable delivery.
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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 capillary and instrumentation tube industry.
59/61 1st Kumbharwada Lane, Near Gol Dewel, Mumbai- 400004
+91 9819702953
inquire.smipl@gmail.com
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