Stainless Steel 347 / 347h Needle Tubes, 347/347h Stainless Steel Needle Tube Manufacturer, SS 347/347h Needle Tube Supplier, SS 347/347h Needle Tube Exporter, Stainless Steel 347/347h Precision Tubing, SS 347/347h Small Diameter Tube ,SS 347/347h Needle Tubes
Sumer Metal Industries Private Limited is a premier manufacturer, supplier, and exporter of Stainless Steel 347 and 347H needle tubes, catering to clients worldwide including Oman, Qatar, Saudi Arabia, UAE, Kuwait, Spain, Germany, USA, Canada, and multiple regions across Africa. These needle tubes are precision-engineered to meet the stringent requirements of industries that demand high-performance materials capable of withstanding elevated temperatures and corrosive environments.
Stainless Steel 347 and 347H are austenitic stainless steels stabilized with columbium (niobium), which improves resistance to intergranular corrosion. These grades are ideal for applications where the material is exposed to temperatures in the range of 800–1500°F (427–816°C). The 347H variant has a slightly higher carbon content, enhancing its creep and stress rupture strength at elevated temperatures, making it suitable for more demanding thermal applications.
These needle tubes are widely used in heat exchangers, furnace components, chemical processing plants, boilers, and high-temperature piping systems. Their excellent resistance to corrosion, oxidation, and thermal fatigue ensures long service life, even in highly aggressive environments. Industries such as petrochemical, power generation, aerospace, and food processing frequently rely on these tubes for critical operations.
The mechanical properties of these tubes include a tensile strength of ≥515 MPa, yield strength of ≥205 MPa, elongation of ≥40%, and hardness up to HRB 95. These characteristics make them suitable for precision applications where both durability and dimensional accuracy are critical.
Specification of Stainless Steel 347 / 347h Needle Tubes
| Property | Stainless Steel 347 / 347H |
|---|---|
| Tensile Strength (MPa) | ≥ 515 |
| Yield Strength (MPa) | ≥ 205 |
| Elongation (%) | ≥ 40 |
| Hardness (HRB) | ≤ 95 |
| Hardness (HB) | ≤ 201 |
| Finish | 2B, No.4, No.1, Mirror Finish |
| Delivery Condition | Annealed & Pickled, Polished, Bright Annealed, Cold Drawn |
| Standards | ASTM A213, A249, A269, EN 10216-5 |
Sumer Metal Industries emphasizes quality control, precision manufacturing, and adherence to international standards, ensuring that all Stainless Steel 347 and 347H needle tubes meet global performance requirements. With advanced finishing options such as 2B, No.4, No.1, mirror finish, bright annealed, and cold-drawn, the company ensures optimal performance and customer satisfaction for exports across multiple continents.
Chemical Composition of Stainless Steel 347 / 347h Needle Tubes
| Element | SS 347 (UNS S34700) | SS 347H (UNS S34709) |
|---|---|---|
| Carbon (C) | ≤ 0.08% | 0.04 – 0.10% |
| Chromium (Cr) | 17.0 – 20.0% | 17.0 – 19.0% |
| Nickel (Ni) | 9.0 – 13.0% | 9.0 – 13.0% |
| Manganese (Mn) | ≤ 2.0% | ≤ 2.0% |
| Silicon (Si) | ≤ 1.0% | ≤ 1.0% |
| Phosphorus (P) | ≤ 0.045% | ≤ 0.045% |
| Sulfur (S) | ≤ 0.030% | ≤ 0.030% |
| Columbium + Tantalum (Nb+Ta) | 10×C – 1.10% | 10×C – 1.10% |
In summary, Stainless Steel 347 / 347H Needle Tubes offer a reliable, corrosion-resistant, and hygienic solution for demanding industrial applications. Whether used in sterile environments, high-temperature processing, or corrosive chemical handling, these tubes deliver long-term performance, reduced maintenance, and full compliance with industry hygiene standards.
Specification of Stainless Steel 347 / 347h Needle Tubes
| Property | Stainless Steel 347 / 347H |
|---|---|
| Tensile Strength (MPa) | ≥ 515 |
| Yield Strength (MPa) | ≥ 205 |
| Elongation (%) | ≥ 40 |
| Hardness (HRB) | ≤ 95 |
| Hardness (HB) | ≤ 201 |
| Finish | 2B, No.4, No.1, Mirror Finish |
| Delivery Condition | Annealed & Pickled, Polished, Bright Annealed, Cold Drawn |
| Standards | ASTM A213, A249, A269, EN 10216-5 |
🏭 Industry & Application
- ✅ SS 347/347h Needle Tubes for Medical Industry
- ✅ SS 347/347h Needle Tubes for Chemical Processing
- ✅ SS 347/347h Tubes for Needle Lines
- ✅ Stainless Steel 347 / 347h Needle Tubes for Gas & Liquid Flow
- ✅ SS 347/347h Tubes for Heat Exchangers
❓ Frequently Asked Questions (FAQs)
Q1: What are the primary applications of Stainless Steel 347 and 347H needle tubes?
A1: These tubes are widely used in high-temperature and corrosion-prone environments such as heat exchangers, furnace components, boilers, chemical processing equipment, and high-temperature piping systems.
Q2: Which industries commonly use SS 347 / 347H needle tubes?
A2: Industries such as petrochemical, aerospace, power generation, and food processing utilize these tubes due to their excellent resistance to intergranular corrosion, oxidation, and thermal fatigue.
Q3: How does Sumer Metal Industries ensure the quality of their needle tubes?
A3: Sumer Metal Industries follows strict quality control measures, adheres to international standards like ASTM A213, A249, A269, EN 10216-5, and offers a variety of finishes and dimensions to meet the specific requirements of global clients.
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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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