Amardeep Steel Center stands at the forefront as a trusted manufacturer, supplier, and exporter of high-performance Stainless Steel 317L Buttweld Fittings. Engineered for excellence, our extensive inventory of ASTM A403 WP317L fittings is the preferred choice for industries that demand superior corrosion resistance and flawless weldability. We combine decades of metallurgical expertise with advanced manufacturing to produce robust SS 317L pipe fittings that guarantee leak-proof integrity and extended service life in the most aggressive environments.
When your project requires the enhanced performance of low-carbon, molybdenum-rich steel, Amardeep Steel Center delivers certified quality and unmatched reliability.
What Are Stainless Steel 317L Buttweld Fittings?
Stainless Steel 317L Buttweld Fittings are premium piping components designed to change direction, branch off, or reduce the size of a piping system. They are joined to pipes through butt welding, creating a strong, continuous, and leak-proof structure. These fittings are manufactured from Grade 317L (UNS S31703), a molybdenum-bearing austenitic stainless steel with a significantly higher alloy content than the more common 316L grade.
The "L" in 317L signifies its low carbon content (0.035% maximum), which is a game-changer for welded applications. This low carbon level drastically reduces the risk of chromium carbide precipitation at the grain boundaries during welding—a phenomenon known as sensitization, which can lead to intergranular corrosion. This makes low carbon 317L stainless fittings exceptionally reliable for fabricated components that will operate in corrosive service without needing post-weld heat treatment.
Thanks to their increased molybdenum (3-4%) and chromium content, 317L Stainless Steel Pipe Fittings offer superior resistance to pitting, crevice corrosion, and general corrosion compared to 316L, especially in chloride-rich environments and against aggressive acids like sulfuric acid.
Table of Contents
- Stainless Steel 317L Buttweld Fittings Specifications
- Chemical Composition & Mechanical Properties of Stainless Steel 317L Buttweld Fittings
- Mechanical Properties of Stainless Steel 317L Buttweld Fittings
- Heat Treatment & Tolerances of Stainless Steel 317L Buttweld Fittings
- Dimensional Tolerances of Stainless Steel 317L Buttweld Fittings
- Types & Forms of Stainless Steel 317L Buttweld Fittings
- Applications & Industries Served of Stainless Steel 317L Buttweld Fittings
- Why Choose Amardeep Steel for Stainless Steel 317L Buttweld Fittings?
- Related Products
- Get a Competitive Price
Stainless Steel 317L Buttweld Fittings Specifications/h2>
Our ASME B16.9 317L Pipe Fittings are manufactured and stocked in strict accordance with global standards to ensure full compliance, safety, and operational excellence.
|
Specification |
Details |
|---|---|
| Specifications | ASTM A403 / ASME SA403 |
| Grade | WP317L (UNS S31703) |
| Dimensions | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43, MSS-SP-79 |
| Size Range | 1/2" NB to 48" NB |
| Type | Seamless / Welded / Fabricated |
| Wall Thickness | Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS |
| Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
| Testing | 100% Radiography Tested (for Welded variant), PMI Testing, Hardness Test |
Chemical Composition & Mechanical Properties of Stainless Steel 317L Buttweld Fittings
The precise chemistry and robust mechanical properties of UNS S31703 Fittings are the foundation of their superior performance in demanding industrial applications.
Chemical Composition (wt %)
|
Grade |
C |
Mn |
Si |
P |
S |
Cr |
Mo |
Ni |
Fe |
|---|---|---|---|---|---|---|---|---|---|
|
SS 317L (UNS S31703) |
0.035 max |
2.0 max |
1.0 max |
0.045 max |
0.030 max |
18.0 - 20.0 |
3.0 - 4.0 |
11.0 - 15.0 |
Balance |
Mechanical Properties of Stainless Steel 317L Buttweld Fittings
|
Property |
Typical Value |
|---|---|
|
Tensile Strength |
515 MPa (75,000 psi) |
|
Yield Strength (0.2% Offset) |
205 MPa (30,000 psi) |
|
Elongation in 2" |
35% |
|
Hardness (Brinell) |
217 Max |
|
Density |
7.99 g/cm³ |
|
Melting Point |
1371 - 1454 °C (2500 - 2650 °F) |
Heat Treatment & Tolerances of Stainless Steel 317L Buttweld Fittings
We adhere to stringent process controls to ensure every fitting meets the highest standards for performance and installation ease.
Heat Treatment Requirements of Stainless Steel 317L Buttweld Fittings
All our ASTM A403 WP317L fittings are provided in the solution-annealed condition. This critical heat treatment process involves heating the fittings to a temperature of 1040-1120°C (1900-2050°F) and then rapidly quenching them. This procedure dissolves any harmful carbide precipitates, refines the austenitic grain structure, and restores the material's maximum corrosion resistance, ductility, and toughness.
Dimensional Tolerances of Stainless Steel 317L Buttweld Fittings
Every fitting we produce conforms strictly to the dimensional tolerances specified in ASME B16.9. This standard precisely defines the center-to-face dimensions, angles, and overall geometry. Adherence to these tolerances is non-negotiable as it ensures perfect alignment and fit-up during on-site installation, which simplifies the welding process, prevents stress points, and saves valuable time and labor costs.
Types & Forms of Stainless Steel 317L Buttweld Fittings
Amardeep Steel Center offers a complete portfolio of SS 317L pipe fittings to accommodate any piping layout or system requirement.
- SS 317L 90° & 45° Elbows (LR/SR): To create smooth directional changes in pipelines.
- SS 317L Equal & Reducing Tees: For creating 90-degree branches from the main pipe run.
- SS 317L Concentric & Eccentric Reducers: To connect pipes of different diameters, with eccentric reducers being ideal for horizontal lines to prevent air/vapor trapping.
- SS 317L End Caps: To provide a permanent, leak-proof seal at the end of a pipeline.
- SS 317L Stub Ends (Lap Joints): Used with lap joint flanges to facilitate easy alignment and disassembly of flanged connections.
- SS 317L Pipe Bends: Custom-fabricated bends (3D, 5D, 10D) for gradual flow changes in critical systems.
- SS 317L Crosses: Four-way fittings for creating intersecting pipe runs.
- SS 317L Nipples (Barrel, Swage): Short lengths of pipe for connecting other fittings.
Applications & Industries Served of Stainless Steel 317L Buttweld Fittings
The exceptional corrosion resistance of 317L Stainless Steel Pipe Fittings makes them indispensable in numerous critical industries:
- Power Generation: Widely used in Flue-Gas Desulfurization (FGD) systems, where they resist highly corrosive sulfuric acid and chloride-rich scrubber slurries.
- Chemical Processing: Ideal for handling harsh chemicals, organic and inorganic compounds, and acidic solutions where standard stainless steels fail.
- Pulp and Paper: To withstand corrosive bleaching agents and processing chemicals without degradation.
- Petrochemicals and Refineries: For pipelines and equipment exposed to aggressive media and high temperatures.
- Marine and Offshore: In seawater cooling systems, ballast water treatment, and offshore platforms due to excellent resistance to chloride pitting.
- Pharmaceuticals: For high-purity systems where resistance to corrosion from both product and cleaning agents is paramount.
- Food & Beverage Processing: In equipment handling acidic food products and brines.
Why Choose Amardeep Steel for Stainless Steel 317L Buttweld Fittings?
- Manufacturing Excellence: Our state-of-the-art facilities give us end-to-end control over the production of 317L Pipe Fittings, ensuring superior quality, consistent wall thickness, and an impeccable finish on every piece.
- Global Exports: We are a leading exporter with a proven track record of serving customers in the USA, Canada, UAE, Saudi Arabia, Europe, and Southeast Asia. Our experienced logistics team ensures a smooth, hassle-free procurement process, no matter where you are located.
- Fast Turnaround: We maintain a comprehensive stock of standard Stainless Steel 317L Buttweld Fittings for immediate shipment. We can accommodate urgent requests and challenging project timelines.
- Certified Quality: As an ISO 9001:2015 certified manufacturer, quality is our guarantee. All our fittings are supplied with an EN 10204 3.1 Material Test Certificate (MTC), offering full traceability. We also welcome third-party inspections from agencies like TUV, DNV, and Lloyd’s.
- Technical Support: Our team of seasoned metallurgists and engineers is available 24/7 to provide expert guidance on material selection, application suitability, and installation best practices. We are more than a supplier; we are your partner in success.
Related Products
- 317L Pipe Fittings
- Stainless Steel 317 Forged Fittings
- Stainless Steel 317L Forged Fittings
- Stainless Steel 317 Buttweld Fittings
Get Your Stainless Steel 317L Buttweld Fittings Price
Ready to order your Stainless Steel 317L Buttweld Fittings? Contact Amardeep Steel Center now for a fast, no-obligation quote. Our dedicated sales team will provide a detailed price and delivery schedule tailored to your exact project needs.
Frequently Asked Questions (FAQ's)
1. What is the primary advantage of 317L over 316L fittings?
The main advantage is superior corrosion resistance. Due to its higher molybdenum (3-4% vs. 2-3% in 316L) and chromium content, 317L offers significantly better resistance to pitting, crevice corrosion, and general corrosion, especially in aggressive chloride-containing environments and against strong acids.
2. Why is the low carbon "L" grade important for buttweld fittings?
The low carbon content prevents sensitization during the heat of welding. This means the area around the weld remains highly resistant to intergranular corrosion, ensuring the long-term integrity and safety of the welded joint without requiring additional heat treatment.
3. Are your ASTM A403 WP317L fittings suitable for high-pressure applications?
Yes. Our fittings are manufactured in various schedule thicknesses (Sch 40s, 80s, 160s, XXS). By selecting the appropriate schedule for your operating pressure and temperature, these fittings are perfectly suited for high-pressure service.
4. Can I get these fittings with a specific surface finish?
Yes. While standard fittings come with a solution-annealed and pickled finish, we can provide additional finishes like electro-polishing or sandblasting upon request to meet specific application requirements.
5. Do you provide a Material Test Certificate (MTC) with your fittings?
Absolutely. Every shipment of Stainless Steel 317L Buttweld Fittings from Amardeep Steel Center is accompanied by an EN 10204 3.1 MTC. This document provides complete traceability, detailing the lot's chemical composition, mechanical properties, heat treatment, and test results.
