Home > Forged Fittings > Stainless Steel 317/317L Forged Fittings
Nakamura Stainless, located in Pulau Ujong, Singapore, is a trusted manufacturer and supplier of high-quality stainless steel products. These include stainless steel 317 and 317L forged fittings. These fittings are made for highly corrosive environments and offer strong resistance to chemical attack, particularly in chloride and sulfur-rich conditions. Stainless steel 317 is a molybdenum-bearing austenitic alloy that has improved corrosion resistance, while 317L is the low-carbon version, which provides better weldability and resistance to intergranular corrosion. Nakamura Stainless focuses on precision forging and strict quality control. They supply fittings for demanding industries such as chemical processing, marine, and pharmaceuticals.
Stainless steel 317/317L forged fittings consist of 18 to 20% chromium, 11 to 15% nickel, and 3 to 4% molybdenum, with 317L having a lower carbon content. This composition offers excellent resistance to pitting, crevice corrosion, and general chemical attack. These fittings usually have tensile strength ranging from 515 to 760 megapascals and work reliably in high-temperature and corrosive settings. The low carbon content in 317L boosts its weldability and lowers the risk of carbide precipitation during welding or thermal exposure.
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 and 317L forged fittings are commonly used in systems that transport aggressive chemicals or operate under high stress in corrosive conditions. Typical applications include piping systems in chemical plants, desalination units, pulp and paper mills, pharmaceutical production, and marine environments. These fittings are perfect for situations where high strength, corrosion resistance, and long-term durability are needed. Their strong mechanical and anti-corrosive properties make them a reliable choice for high-performance and safety-critical uses.
©2024 Nakamura Stainless All Rights Reserved.
