Yash Fittings from Mumbai, India is a top-notch industrial fittings manufacturing and supplying company with high-grade fittings for various sectors through precision-made products. Its specialized product is Stainless Steel 347H Pipe Fittings, an increased-carbon variation of stainless steel grade 347. Famous for its improved resistance to creep and better performance when used at higher temperatures, 347H is stabilized using columbium to add corrosion resistance. Yash Fittings provides reliable, long-lasting fittings to international standards for severe-duty applications in harsh environments.
| 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 |
Stainless Steel 347H Pipe Fittings possess superior resistance against chemicals, especially in heavily oxidizing conditions and high-temperature use. The increased carbon content adds enhanced creep strength, and columbium stabilization avoids carbide precipitation when welding. They are mechanically strong with high tensile and yield strength, good toughness, and superb resilience against stress. Physically, 347H is structurally stable at high temperatures, non-magnetic in the annealed state, and possesses excellent thermal conductivity and oxidation resistance and is thus best suited for applications involving high heat.
| 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 % |
Yash Fittings one of the largest suppliers of Stainless Steel 347H Pipe Fittings in Mumbai, India. 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 India.
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 Yash 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@yashfittings.com
| 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 |
Stainless Steel 347H Pipe Fittings find extensive applications in high-temperature operating industries with corrosive media. Some of the applications are in power generation, petroleum refining, and chemical processing, especially in heat exchangers, boiler tubes, and superheaters. They are also applied in the aerospace and marine industries where high thermal and mechanical performance is needed. With superior weldability and resistance to intergranular corrosion, 347H fittings provide long service life and dependability for operating under severe conditions.
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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