Smith Fittings, located in Canberra, Australia, has made a name for itself as a top-notch manufacturer and supplier of high-quality Stainless Steel 317/317L Forged Fittings. Renowned for their exceptional design, durability, and resistance to corrosion, the company provides forged fittings that are specifically engineered to perform well in tough, high-pressure environments. The Stainless Steel 317/317L Forged Fittings from Smith Fittings are designed to withstand chemical attacks, pitting, and crevice corrosion, making them perfect for demanding industrial applications. Catering to industries like chemical processing, petrochemical, marine, and power generation, Smith Fittings guarantees that every product meets international quality standards, delivering reliable, efficient, and long-lasting piping solutions.
Specifications : ASTM A182 / ASME SA182
Dimensions : ASME B16.11, MSS-SP-79, MSS-SP-83, MSS-SP-95, MSS-SP-97, BS3799
Size : 1/8″ NB to 4″ NB
Type : Socketweld Fittings, Screwed-Threaded Fittings (NPT or PT Type)
Rating Pressure : Threaded End – 2000 /3000/ 6000 LBS. Socket-weld End – 3000 / 6000/ 9000 LBS.
These fittings are made from a blend of chromium (18–20%), nickel (11–15%), and molybdenum (3–4%), with the 317L grade featuring low carbon content for better weldability and corrosion resistance. The alloys boast impressive mechanical properties, including high tensile and yield strength, excellent ductility, and remarkable resistance to pitting and stress corrosion cracking. The forged fittings maintain their structural integrity even under high temperatures and pressure, ensuring long-term reliability and durability in both oxidizing and reducing environments.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Fe |
| SS 317 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 18.00 – 20.00 | 3.00 – 4.00 | 11.00 – 15.00 | 57.845 min |
| SS 317L | 0.035 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 18.00 – 20.00 | 3.00 – 4.00 | 11.00 – 15.00 | 57.89 min |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.9 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
Smith Fittings is a leading supplier of Stainless Steel 317/317L Forged Fittings in Canberra, Australia. We offer an extensive range of Stainless Steel 317/317L Forged Fittings, renowned for their excellent corrosion resistance and high strength, which makes them perfect for demanding industrial applications like chemical processing, marine environments, and high-temperature systems. With a commitment to quality and reliable delivery, we ensure our clients receive top-tier products tailored to meet the specific needs of various industries.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
| STANDARD | WERKSTOFF NR. | UNS | JIS | EN |
| SS 317 | 1.4449 | S31700 | SUS 317 | – |
| SS 317L | 1.4438 | S31703 | SUS 317L | X2CrNiMo18-15-4 |
Choose Stainless Steel 317/317L Forged Fittings from Smith Fittings for superior quality, exceptional corrosion resistance, and reliable performance in extreme conditions. We offer customized solutions backed by expert support and industry experience.
Stainless steel 317/317L forged fittings provide excellent corrosion resistance, especially in high chloride environments, making them ideal for chemical, petrochemical, and marine applications These alloys have excellent strength and thermal stability even at higher levels, providing longer service life. The low carbon content of 317L reduces carbide precipitation, increases weldability and reduces the susceptibility to stress corrosion cracking. In addition, they are more resistant to oxidation and pitting, increasing the longevity of the systems. Their high resistance to sulfuric and hydrochloric acids makes them suitable for aggressive chemical applications.
Yes, custom sizes for Stainless Steel 317/317L Forged Fittings are available at Smith Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@smithfittings.com
| Fitting Schedule/Class | Pipe Size – Pipe Fitting | Fitting Connection Type | Pipe Fitting Material | Max. Pressure |
|---|---|---|---|---|
| Class 150 | 1/2″ | FNPT | Stainless Steel 317 | 150 psi |
| Class 150 | 1/2″ | FNPT | Stainless Steel 317 | 150 psi |
| Class 150 | 1/2″ | Forged | Forged Stainless Steel 317 | 275 psi |
| Class 150 | 1/2″ | Welded | Stainless Steel 317 | 150 psi |
| Class 150 | 3/4″ | FNPT | Stainless Steel 317 | 150 psi |
| Class 150 | 3/4″ | FNPT | Stainless Steel 317 | 150 psi |
| Class 150 | 3/4″ | Forged | Forged Stainless Steel 317 | 275 psi |
| Class 150 | 3/4″ | Welded | Stainless Steel 317 | 150 psi |
| Class 150 | 3/4″ | Welded | Stainless Steel 317 | 150 psi |
| Class 150 | 1″ | FNPT | Stainless Steel 317 | 150 psi |
| Class 150 | 1″ | FNPT | Stainless Steel 317 | 150 psi |
| Class 150 | 1″ | Forged | Forged Stainless Steel 317 | 275 psi |
| Class 150 | 1″ | Welded | Stainless Steel 317 | 150 psi |
| Class 150 | 1″ | Welded | Stainless Steel 317 | 150 psi |
| Class 150 | 1-1/4″ | FNPT | Stainless Steel 317 | 150 psi |
| Class 150 | 1-1/4″ | FNPT | Stainless Steel 317 | 150 psi |
| Class 150 | 1-1/4″ | Forged | Forged Stainless Steel 317 | 275 psi |
| Class 150 | 1-1/4″ | Welded | Stainless Steel 317 | 150 psi |
| Class 150 | 1-1/4″ | Welded | Stainless Steel 317 | 150 psi |
| Class 150 | 1-1/2″ | FNPT | Stainless Steel 317 | 150 psi |
| Class 150 | 1-1/2″ | FNPT | Stainless Steel 317 | 150 psi |
| Class 150 | 1-1/2″ | Forged | Forged Stainless Steel 317 | 275 psi |
| Class 150 | 1-1/2″ | Welded | Stainless Steel 317 | 150 psi |
| Class 150 | 1-1/2″ | Welded | Stainless Steel 317 | 150 psi |
| Class 150 | 2″ | FNPT | Stainless Steel 317 | 150 psi |
| Class 150 | 2″ | FNPT | Stainless Steel 317 | 150 psi |
| Class 150 | 2″ | Forged | Forged Stainless Steel 317 | 275 psi |
| Class 150 | 2″ | Welded | Stainless Steel 317 | 150 psi |
| Class 150 | 2″ | Welded | Stainless Steel 317 | 150 psi |
| Class 150 | 2-1/2″ | FNPT | Stainless Steel 317 | 150 psi |
| Class 150 | 2-1/2″ | FNPT | Stainless Steel 317 | 150 psi |
| Class 150 | 2-1/2″ | Forged | Forged Stainless Steel 317 | 275 psi |
| Class 150 | 2-1/2″ | Welded | Stainless Steel 317 | 150 psi |
| Class 150 | 2-1/2″ | Welded | Stainless Steel 317 | 150 psi |
| Class 150 | 3″ | FNPT | Stainless Steel 317 | 150 psi |
| Class 150 | 3″ | FNPT | Stainless Steel 317 | 150 psi |
| Class 150 | 3″ | Forged | Forged Stainless Steel 317 | 275 psi |
| Class 150 | 3″ | Welded | Stainless Steel 317 | 150 psi |
| Class 150 | 4″ | FNPT | Stainless Steel 317 | 150 psi |
| Class 150 | 4″ | FNPT | Stainless Steel 317 | 150 psi |
| Class 150 | 4″ | Forged | Forged Stainless Steel 317 | 275 psi |
| Class 150 | 4″ | Welded | Stainless Steel 317 | 150 psi |
| Class 150 | 4″ | Welded | Stainless Steel 317 | 150 psi |
| Class 150 | 6″ | FNPT | Stainless Steel 317 | 150 psi |
| Class 150 | 6″ | FNPT | Stainless Steel 317 | 150 psi |
| Class 150 | 6″ | Welded | Stainless Steel 317 | 150 psi |
| Class 150 | 6″ | Welded | Stainless Steel 317 | 150 psi |
| DN-NPT | MAJOR DIAMETER MM | TAPPING DRILL SIZE MM | TPI | PITCH MM |
|---|---|---|---|---|
| 1/16″ | 7.895 | 6.00 | 27 | 0.941 |
| 1/8″ | 10.242 | 8.25 | 27 | 0.941 |
| 1/4″ | 13.616 | 10.70 | 18 | 1.411 |
| 3/8″ | 17.055 | 14.10 | 18 | 1.411 |
| 1/2″ | 21.223 | 17.40 | 14 | 1.814 |
| 3/4″ | 26.568 | 22.60 | 14 | 1.814 |
| 1″ | 33.228 | 28.50 | 11.5 | 2.209 |
| 1¼” | 41.985 | 37.00 | 11.5 | 2.209 |
| 1½” | 48.054 | 43.50 | 11.5 | 2.209 |
| 2″ | 60.092 | 55.00 | 11.5 | 2.209 |
| 2½” | 72.699 | 65.50 | 8 | 3.175 |
| 3″ | 88.608 | 81.50 | 8 | 3.175 |
| 3½” | 101.316 | 94.30 | 8 | 3.175 |
| 4″ | 113.973 | 107.00 | 8 | 3.175 |
| 5″ | 141.300 | 134.384 | 8 | 3.175 |
| 6″ | 168.275 | 161.191 | 8 | 3.175 |
| 8″ | 219.075 | 211.673 | 8 | 3.175 |
| 10″ | 273.050 | 265.311 | 8 | 3.175 |
| 12″ | 323.850 | 315.793 | 8 | 3.175 |
Stainless Steel 317/317L Forged Fittings are commonly utilized in industries that demand superior corrosion and heat resistance. Typical applications include chemical and petrochemical processing plants, marine systems, power generation units, food processing, and the pulp and paper industry. These fittings are perfect for connecting and managing piping systems that deal with corrosive fluids, acids, and high-temperature gases. With Smith Fittings’ Stainless Steel 317/317L Forged Fittings, you can expect leak-free connections, outstanding mechanical performance, and a long service life, making them the go-to choice for critical applications where strength, corrosion resistance, and operational efficiency are essential.
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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