- sales@blundellpipes.co.nz
- Hamilton, New Zealand
Home > Stainless Steel >Stainless Steel 347 and 347H Instrumentation Tubing
Blundell Pipes is a trusted Hamilton, New Zealand-based manufacturer and supplier of Stainless Steel 347 and 347H Instrumentation Tubing, providing high-performance tubing solutions for precise instrumentation applications in high-temperature and corrosive conditions. Reputed for providing products in international standards, Blundell Pipes offers Stainless Steel 347 and 347H Instrumentation Tubing to oil and gas, chemical process, power generation, and aerospace industries. The company maintains dimensional stability, resistance to corrosion, and reliable performance under severe operating conditions in the Middle East region and across the globe.
Stainless Steel 347 and 347H Instrumentation Tubing are columbium (niobium)-stabilized austenitic stainless steel with 17–20% chromium and 9–13% nickel. 347 grade resists intergranular corrosion during thermal cycling and welding, whereas 347H possesses greater content of carbon up to 0.10% to provide better creep strength and high-temperature strength. The tubes generally provide tensile strength ranging from 515–750 MPa and a yield strength of about 205 MPa. They display fine oxidation resistance and dimensional stability in temperatures up to 900°C, having good weldability and dimensional accuracy.
| Grade | Range | Ni | C | Cr | Mn | Si | P | S |
|---|---|---|---|---|---|---|---|---|
| 347 | Min. | 9.0 | – | 17.0 | – | – | – | – |
| Max. | 13.0 | 0.08 | 20.0 | 2.00 | 1.00 | 0.040 | 0.030 | |
| 347H | Min. | 9.0 | 0.04 | 17.0 | – | – | – | – |
| Max. | 13.0 | 0.10 | 19.0 | 2.00 | 1.00 | 0.045 | 0.030 |
| Grade | Tensile Strength min (MPa) | Yield Strength 0.2% Proof min (MPa) | Hardness | Elongation (% in 50mm) min | |
|---|---|---|---|---|---|
| Brinell max (HB) | Rockwell B max (HR B) | ||||
| 347/347h | 515 | 205 | 201 | 92 | 40% |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Choosing Stainless Steel 347 and 347H Instrumentation Tubing from Blundell Pipes and Tubes ensures high quality and durability, as these pipes offer excellent corrosion resistance and strength. Our commitment to exceptional service and reliable delivery guarantees customer satisfaction across various industrial applications. Our expertise in stainless steel products ensures you receive a top-tier solution tailored to your needs.
Blundell Pipes and Tubes, one of the largest suppliers of Stainless Steel 316 and 316L Instrumentation Tubing in Hamilton, New Zealand, offers a comprehensive range of high-quality pipes and tubes suitable for various industrial applications. Their extensive inventory and commitment to exceptional service make them a go-to choice for stainless steel products in the region.
| Grade | UNS No | Old British | Euronorm | Japanese JIS | Swedish SS | GOST | ||
|---|---|---|---|---|---|---|---|---|
| BS | En | No | Name | |||||
| 347 | S34700 | 347S31 | – | 1.4550 | X6CrNiNb18-10 | SUS 347 | 2338 | 08Ch18N12B |
| 347h | S34709 | – | – | 1.4961 | – | SUS 347h | – | – |
Yes, we offer custom sizes for Stainless Steel 347 and 347H Instrumentation Tubing to meet your specific requirements. Our team at Blundell Pipes and Tubes is committed to providing tailored solutions for all your Piping & tubing needs. For more details, contact us at sales@blundellpipes.co.nz.
Stainless Steel 347 and 347H Instrumentation Tubing is utilized in control lines, measurement devices, pressure instrumentation, and hydraulic or pneumatic installations under exposure to heat and corrosive fluids. Grade 347 is ideally used in welded assemblies where carbide precipitation should be prevented, whereas 347H is used for continuous service under elevated pressure and temperature. The grades provide long-term stability, corrosion resistance, and stable performance in the instrumentation system where accuracy and reliability are necessary in harsh conditions.
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