Tim Fittings, located in Wellington, New Zealand, stands out as a top manufacturer and supplier of high-quality Stainless Steel 347H Pipe Fittings. These fittings are crafted for durability, corrosion resistance, and the ability to handle high temperatures. Thanks to their state-of-the-art manufacturing facilities and rigorous quality control processes, the company guarantees that every product delivers exceptional performance and reliability. Their Stainless Steel 347H Pipe Fittings are designed to meet international standards, making them perfect for demanding industrial applications. Tim Fittings is dedicated to offering precision-engineered solutions, prompt delivery, and outstanding customer service to industries that need robust and heat-resistant stainless steel fittings for critical piping systems.
| Specifications | ASTM A403 / ASME SA403 |
| Size | 1/8” NB TO 48” NB. (Seamless & 100% X-Ray Welded, Fabricated) |
| Standards | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 |
| Thickness | 5s, 10s, 40s, 80s, 10, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160, XXS available with NACE MR 01-75 |
| Type | Seamless / Welded / Fabricated |
The Stainless Steel 347H Pipe Fittings are primarily made up of chromium, nickel, and niobium, which provide remarkable resistance to intergranular corrosion and oxidation. The inclusion of carbon boosts their high-temperature strength and creep resistance. These fittings showcase impressive mechanical properties, such as high tensile strength, good yield strength, and excellent toughness, even when exposed to elevated temperatures. Stainless Steel 347H maintains outstanding stability during extended heat exposure, ensuring durability and reliability in tough operational settings, especially where temperature changes and corrosive substances are a concern.
| Grade | C | Ni | Mn | P | S | Cr | Si | Mo | N |
| 347H | 0.08 max | 9.00-13.00 | 2.0 max | 0.045 max | 0.030 max | 17.00 – 20.00 | 1.0 max | – | – |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1454°C (2650°F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
Tim Fittings one of the largest suppliers of Stainless Steel 347H Pipe Fittings in Wellington, New Zealand. We specialize in providing a wide range of high-quality, durable fittings for various industrial applications. Our inventory includes elbows, tees, reducers, couplings, and other essential fittings designed to offer exceptional corrosion resistance and strength. Stainless Steel 347H is known for its cost-effectiveness and excellent mechanical properties, making it ideal for industries such as construction, chemical processing, and food processing. With a commitment to customer satisfaction, timely delivery, and competitive pricing, we are the trusted choice for Stainless Steel 347H Pipe Fittings in the New Zealand.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Stainless Steel 347H Pipe Fittings from Tim Fittings offer exceptional corrosion resistance, especially in seawater and harsh environments. They are known for their high strength, durability, and resistance to pitting and crevice corrosion, ensuring long-lasting performance. We provide precise manufacturing, quality control, and reliable service for diverse industrial applications.
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| 347H | 1.4961 | S34709 | SUS 347H | – | – | – | X6CrNiNb18-12 |
Stainless steel 347H pipe fittings offer many advantages, including exceptional resistance to temperature rise and oxidation, making them suitable for use in heat exchangers and boilers The addition of niobium provides excellent resistance to intergranular corrosion , ensuring durability in environments with frequent temperature changes. These fittings exhibit good mechanical strength, high tensile and yield characteristics, excellent weldability, making them versatile in demanding industrial conditions Besides, their high creep strength and resistance to chemical applications makes them ideal for the petrochemical, power generation and aerospace industries.
Yes, custom sizes are available for Stainless Steel 347H Pipe Fittings to meet specific requirements. We offer tailored solutions to ensure precise fit and performance for various applications. For more information, please contact us at sales@timfittings.co.nz.
| Minimal Sizes | Outer Diam. | Caps | Straight Tee | Straight Crosses | Stub Ends | |||
|---|---|---|---|---|---|---|---|---|
| (in) | (mm) | (in) | Length (in) | Center to End (in) | Center to End (in) | Lap Diameter (in) | Long Length (in) | Short Length (in) |
| 1/2 | 21.3 | 0.840 | 1 | 1 | – | 1 3/8 | 3 | 2 |
| 1 | 33.4 | 1.315 | 1 1/2 | 1 1/2 | 1 1/2 | 2 | 4 | 2 |
| 3/4 | 26.7 | 1.050 | 1 | 1 1/8 | – | 1 11/16 | 3 | 2 |
| 1 1/4 | 42.2 | 1.660 | 1 1/2 | 1 7/8 | 1 7/8 | 2 1/2 | 4 | 2 |
| 2 | 60.3 | 2.375 | 1 1/2 | 2 1/2 | 2 1/2 | 3 5/8 | 6 | 2 1/2 |
| 1 1/2 | 48.3 | 1.900 | 1 1/2 | 2 1/4 | 2 1/4 | 2 7/8 | 4 | 2 |
| 2 1/2 | 73.0 | 2.875 | 1 1/2 | 3 | 3 | 4 1/8 | 6 | 2 1/2 |
| 3 1/2 | 101.6 | 4.000 | 2 1/2 | 3 3/4 | 3 3/4 | 5 1/2 | 6 | 3 |
| 3 | 88.9 | 3.500 | 2 | 3 3/8 | 3 3/8 | 5 | 6 | 2 1/2 |
| 4 | 114.3 | 4.500 | 2 1/2 | 4 1/8 | 4 1/8 | 6 3/16 | 6 | 3 |
| 6 | 168.3 | 6.625 | 3 1/2 | 5 5/8 | 5 5/8 | 8 1/2 | 8 | 3 1/2 |
| 5 | 141.3 | 5.563 | 3 | 4 7/8 | 4 7/8 | 7 5/16 | 8 | 3 |
| 8 | 219.1 | 8.625 | 4 | 7 | 7 | 10 5/8 | 8 | 4 |
| 12 | 323.9 | 12.750 | 6 | 10 | 10 | 15 | 10 | 6 |
| 10 | 273.1 | 10.750 | 5 | 8 1/2 | 8 1/2 | 12 3/4 | 10 | 5 |
| Nominal Pipe Size | Outside Diameter | 90° Elbows | 45° Elbows | 180° Returns | ||||
|---|---|---|---|---|---|---|---|---|
(inches) | Long Radius | Short Radius | Long Radius | Long Radius | ||||
(mm) | (inches) | Center to Face (inches) | Center to Face (inches) | Center to Face (inches) | Radius (inches) | Center to Center (inches) | Back to face (inches) | |
1/2 | 21.3 | 0.840 | 1 1/2 | – | 5/8 | 2 | 1 7/8 | |
3/4 | 26.7 | 1.050 | 1 1/8 | – | 7/16 | 2 1/4 | 1 11/16 | |
1 | 33.4 | 1.315 | 1 1/2 | 1 | 7/8 | 3 | 2 3/16 | |
1 1/4 | 42.2 | 1.660 | 1 7/8 | 1 1/4 | 1 | 3 3/4 | 2 3/4 | |
1 1/2 | 48.3 | 1.900 | 2 1/4 | 1 1/2 | 1 1/8 | 3 | 4 1/2 | 3 1/4 |
2 | 60.3 | 2.375 | 3 | 2 | 1 3/8 | 4 | 6 | 4 3/16 |
2 1/2 | 73.0 | 2.875 | 3 3/4 | 2 1/2 | 1 3/4 | 5 | 7 1/2 | 5 3/16 |
3 | 88.9 | 3.500 | 4 1/2 | 3 | 2 | 6 | 9 | 6 1/4 |
3 1/2 | 101.6 | 4.000 | 5 1/4 | 3 1/2 | 2 1/4 | 7 | 10 1/2 | 7 1/4 |
4 | 114.3 | 4.500 | 6 | 4 | 2 1/2 | 8 | 12 | 8 1/4 |
5 | 141.3 | 5.563 | 7 1/2 | 5 | 3 1/8 | 10 | 15 | 10 5/16 |
6 | 168.3 | 6.625 | 9 | 6 | 3 3/4 | 12 | 18 | 12 5/16 |
8 | 219.1 | 8.625 | 12 | 8 | 5 | 12 | 24 | 16 5/16 |
10 | 273.1 | 10.750 | 15 | 10 | 6 1/4 | 15 | 30 | 20 3/8 |
12 | 323.9 | 12.750 | 18 | 12 | 7 1/2 | 18 | 36 | 24 3/8 |
You’ll find Stainless Steel 347H Pipe Fittings widely utilized in sectors like petrochemical, oil and gas, power generation, and chemical processing, thanks to their ability to endure high temperatures and harsh environments. They’re perfect for heat exchangers, pressure vessels, boilers, and piping systems that operate under extreme conditions. These fittings are also commonly used in refineries, thermal power plants, and food processing facilities, where cleanliness and durability are crucial. Their remarkable mechanical and chemical stability makes them a go-to choice for critical applications that demand long-lasting performance and structural integrity.
Get in touch with one of our Technical Sales Representatives to request a quote or get answers to any questions you may have.








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