Stainless Steel 347 / 347H Pipe Fittings
Arrow Piping Solutions is a trusted manufacturer, supplier, and exporter of high‑quality Stainless Steel 347 / 347H Buttweld Pipe Fittings in India. We offer an extensive range including SS 347 Pipe Cap, ASTM A403 WP347 45° Elbow, 347 SS 90° Elbow, 347H Stainless Steel Reducer, and more.
Stainless Steel 347 / 347H is an austenitic stainless steel stabilized with columbium and tantalum. It is well-suited for high-temperature applications, providing excellent creep resistance and oxidation resistance even at elevated temperatures. This grade is widely used in demanding environments such as containers, offshore structures, automotive systems, and transport equipment.
Arrow Piping Solutions manufactures 347 / 347H pipe fittings in a variety of sizes, wall thicknesses, and specifications. All fittings comply with international standards like ASME/ANSI B16.9, ASME B16.25, B16.28, B16.49, and MSS-SP-43. We maintain strict quality control throughout the production process, including custom testing based on client requirements to ensure exceptional workability and performance.
Our 347 / 347H Stainless Steel Buttweld Fittings are known for their durability, corrosion resistance, superior weldability, high tensile strength, low maintenance, and excellent performance under pressure. Each fitting is carefully inspected and packaged for secure delivery worldwide.
Key Features:
- Excellent intergranular corrosion resistance
- High-temperature and pressure resistance
- Superior weldability and mechanical strength
- Dimensionally accurate and durable construction
- Low maintenance and extended service life
Stainless Steel 347 / 347H Pipe Fittings
Arrow Piping Solutions is a trusted manufacturer and supplier of Stainless Steel 347 and 347H Buttweld Pipe Fittings in India. We offer an extensive range of ASTM A403 WP347 45° Elbows, 347 SS 90° Elbows, SS 347H Pipe Caps, SS 347H Reducers, and customized fittings to suit diverse industrial requirements.
Stainless Steel 347 / 347H is a high-performance austenitic steel grade known for its excellent resistance to intergranular corrosion and enhanced performance at elevated temperatures. It contains columbium and tantalum, providing superior creep and oxidation resistance, making it ideal for high-temperature applications.
At Arrow Piping Solutions, our fittings are widely used in containers, offshore structures, automotive components, power plants, and other demanding environments. We ensure every fitting is manufactured as per international standards and undergoes strict quality checks to guarantee durability, weldability, high strength, and dimensional accuracy.
Specifications
| Specification | ASTM A403 / ASME SA403 |
|---|---|
| Dimension Standards | ASME/ANSI B16.9, ASME B16.28, MSS‑SP‑43 |
| ASME B16.9 | Factory‑Made Wrought Buttwelding Fittings |
| ASME B16.25 | Buttwelding Ends |
| ASME B16.28 | Butt‑Welded Short Radius Elbows & Returns Bends |
| MSS SP‑43 | Wrought and Fabricated Butt‑Welding Fittings for Low Pressure, Corrosion Resistant Applications |
| Size Range | ½″ NB to 24″ NB in Sch 10s, 40s, 80s, 160s, XXS (DN6~DN100) |
| Seamless Butt Weld Size | ½″–10″ |
| Welded Butt Weld Size | ½″–48″ |
| Thickness | Sch 5s, 10s, 40s, 80s, 160s, XXS |
| Bending Radius | 1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
| Type | Seamless / Welded / Fabricated |
Equivalent Grades
| STANDARD | WERKSTOFF NR. | UNS | JIS | EN | GOST |
|---|---|---|---|---|---|
| SS 347 | 1.4550 | S34700 | SUS 347 | X6CrNiNb18‑10 | 08Ch18N12B |
| SS 347H | 1.4961 | S34709 | SUS 347H | X6CrNiNb18‑12 | - |
At Arrow Piping Solutions, each product undergoes strict inspection during production to ensure defect-free quality and reliable performance. Our SS 347 / 347H Pipe Fittings deliver excellent yield strength and can withstand heavy loads—ideal for demanding applications in heavy engineering industries.
We ensure secure packaging and safe transit of our fittings to avoid damage during delivery. Our reputation as a reliable and cost-effective Stainless Steel 347 / 347H Pipe Fittings manufacturer and exporter in India is built on customer satisfaction and product excellence.
Dimensions
| Nominal Pipe Size (NPS) | O.D. at Bevel | I.D. at End | Wall Thickness | Elbows / Tees A,B,C,M | 180° Return Bends O | Back-to-Face K | Alignment of Ends U | Reducers H | Caps E |
|---|---|---|---|---|---|---|---|---|---|
| ½″ – 2½″ | 0.06 – 0.03″ | 0.03″ | ≥87.5% nominal | 0.06″ | 0.25″ | 0.25″ | 0.03″ | 0.06″ | 0.12″ |
| 3″ – 3½″ | 0.06″ | 0.06″ | ≥87.5% nominal | 0.06″ | 0.25″ | 0.25″ | 0.03″ | 0.06″ | 0.12″ |
| 4″ | 0.06″ | 0.06″ | ≥87.5% nominal | 0.06″ | 0.25″ | 0.25″ | 0.03″ | 0.06″ | 0.12″ |
| 5″ – 8″ | 0.09 – 0.06″ | 0.06″ | ≥87.5% nominal | 0.06″ | 0.25″ | 0.25″ | 0.03″ | 0.06″ | 0.25″ |
| 10″ – 18″ | 0.16 – 0.12″ | 0.12″ | ≥87.5% nominal | 0.09″ | 0.38″ | 0.25″ | 0.06″ | 0.09″ | 0.25″ |
| 20″ – 24″ | 0.25 – 0.19″ | 0.19″ | ≥87.5% nominal | 0.09″ | 0.38″ | 0.25″ | 0.06″ | 0.09″ | 0.25″ |
| 26″ – 30″ | 0.25 – 0.19″ | 0.19″ | ≥87.5% nominal | 0.12″ | – | – | – | 0.19″ | 0.38″ |
| 32″ – 48″ | 0.25 – 0.19″ | 0.19″ | ≥87.5% nominal | 0.19″ | – | – | – | 0.19″ | 0.38″ |
Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Cb | Ni | Fe |
|---|---|---|---|---|---|---|---|---|---|
| SS 347 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 20.00 | 10×C – 1.10 | 9.00 – 13.00 | 62.74 min |
| SS 347H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 8×C – 1.10 | 9.00 – 13.00 | 63.72 min |
Mechanical Properties
| Density | Melting Point | Tensile Strength | Yield Strength (0.2% Offset) | Elongation |
|---|---|---|---|---|
| 8.0 g/cm³ | 1454 °C (2650 °F) | 75,000 psi / 515 MPa | 30,000 psi / 205 MPa | 35 % |
Application Industries
Arrow Piping Solutions’ SS 347 / 347H Pipe Fittings are extensively used in:
- Textile machinery
- Oil and gas industry
- Pulp and paper industry
- Power plants
- Energy industries
- Furniture
- Pharmaceutical processing industry
- Modern architecture
- Home appliances
- Water waste projects
- Synthetic fiber
- Heat exchanger
- Fluid piping
- Dairy and food processing