Home > Forged Fittings > Stainless Steel 317/317L Forged Fittings
Aditya Stainless, a reputable manufacturer and supplier located in Kolkata, India, focuses on producing high-performance Stainless Steel 317 / 317L Forged Fittings that are built to withstand the tough demands of corrosive and high-pressure settings. These fittings are made from molybdenum-bearing austenitic stainless steel, with SS 317 providing enhanced strength and corrosion resistance, while SS 317L, the low-carbon variant, improves weldability and minimizes carbide precipitation. Crafted to meet global standards like ASTM A182, these forged fittings—including elbows, tees, couplings, and unions—are perfect for use in industries such as chemical processing, pharmaceuticals, pulp and paper, and marine applications.
Stainless Steel 317 / 317L Forged Fittings are composed of 18–20% chromium, 11–15% nickel, and 3–4% molybdenum, which gives them exceptional resistance to pitting, crevice corrosion, and chemical attacks. The low-carbon variant, 317L, helps reduce the risk of intergranular corrosion after welding. These fittings boast a tensile strength of ≥515 MPa, yield strength of ≥205 MPa, and an elongation of 30–35%. They maintain their strength and ductility over a wide temperature range, making them ideal for both high-temperature applications and exposure to corrosive chemicals, all while ensuring excellent weldability and machinability.
Specifications ASTM A182 & ASME SA182
Standard ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799
Size 1/8” NB to 4” NB (Socketweld & Screwed-Threaded)
Class 2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS
Type Socketweld Fittings, Screwed-Threaded Fittings
Forged Fittings Items 45 Deg Elbow, 90 Deg Elbow, Forged Tee, Union, Full Coupling, Half Coupling, Cross, Cap, Swage Nipple, Plug, Bush, Welding Boss, Hexagonal Nipple etc.
Type Socketweld Fittings, Screwed-Threaded Fittings
Grade 317 / 317L UNS (S31700, S31703), DIN (1.4449, 1.4438)
| 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 % |
Contact us to get a quick quote for your requirement.
We ensures that all stainless steel 317/317L forged fittings go through rigorous testing procedures, including dimensional testing, mechanical testing and corrosion resistance testing. The products are certified to meet international quality standards, including ASTM, ASME, and EN specifications, providing customers with guaranteed reliability and performance for a range of industrial applications
Stainless Steel 317 Socket Weld Fittings are renowned for their excellent corrosion resistance and are commonly used in high-pressure applications. They are available in sizes ranging from 1/8″ to 4″ and are manufactured to meet ASTM standards, ensuring strong, leak-proof connections.
Offering high corrosion resistance, these fittings are designed for easy installation in various piping systems. Common sizes range from 1/8″ to 6″ NPT, providing versatility and robustness in handling fluids and gases.
With superior corrosion resistance, this elbow allows for smooth directional changes in piping systems. It is available in sizes from 1/2″ to 4″ and is designed to meet ASTM specifications for high strength and durability.
This fitting combines high corrosion resistance with structural integrity, ideal for branching pipes at a 90-degree angle. Available in sizes from 1/8″ to 6″ NPT, it ensures reliable and secure connections.
Known for its excellent corrosion resistance, this half coupling connects two threaded pipes or fittings. Common sizes include 1/4″ to 4″ NPT, providing a strong and durable link.
This cross-fitting offers exceptional corrosion resistance, enabling the intersection of four pipes. Sizes typically range from 1/2″ to 4″, adhering to ASTM standards for robustness and reliability in high-pressure applications.
Stainless Steel 317 / 317L Forged Fittings find extensive use in industries dealing with aggressive chemicals, such as sulfates, chlorides, and acidic solutions. They are commonly utilized in chemical processing plants, pulp and paper mills, pharmaceutical manufacturing, marine environments, and food processing facilities. Their superior corrosion resistance makes them well-suited for systems that encounter brine, acidic gases, and chlorinated solutions. These forged fittings ensure reliable connections in high-pressure piping systems and are frequently employed in heat exchangers and evaporators.
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