Stainless Steel 317 Buttweld Fittings are high-performance pipe fittings designed to handle demanding industrial environments that require excellent corrosion resistance and durability. At Solitaire Fittings, we manufacture and supply a wide range of ASTM A403 WP317 Stainless Steel Buttweld Fittings that meet global standards like ASME B16.9, ASME B16.28, MSS SP-43, and MSS SP-79.
Our SS 317 Buttweld Pipe Fittings are widely used in industries such as chemical processing, food and beverage, pulp and paper, power generation, and oil refining. Whether you need UNS S31703 Seamless Fittings, ANSI B16.9 SS 317 Pipe Cap, or DIN 1.4438 Stub End, we provide precision-engineered fittings that ensure leak-proof and long-lasting performance.
What is Stainless Steel 317?
Stainless Steel 317 is an austenitic chromium-nickel-molybdenum alloy that offers higher corrosion resistance compared to standard grades like 304 or 316. The added molybdenum improves resistance to pitting, crevice corrosion, and chemical attacks caused by acids such as sulfuric, acetic, and citric acid.
The alloy also provides excellent strength at elevated temperatures, making it ideal for high-temperature service and environments where other stainless steels may fail.
Two common variants are:
- UNS S31700 (SS 317) – Standard grade with excellent corrosion resistance.
- UNS S31703 (SS 317L) – Low-carbon version that offers superior weldability and reduced carbide precipitation during welding.
Features & Benefits of ASTM A403 WP317 Stainless Steel Buttweld Fittings
Our ASTM A403 SS 317 Buttweld Pipe Fittings are designed with precision and tested for strength, durability, and performance. Below are some of the key advantages:
- High Corrosion Resistance: Excellent resistance against acids, salts, and chlorides, making it suitable for marine and chemical applications.
- Superior Strength: Higher tensile and yield strength compared to SS 316.
- Excellent Weldability: Can be easily welded using standard techniques without risk of sensitization.
- Long Service Life: Maintains mechanical properties even in high-temperature environments.
- Smooth Internal Surface: Ensures better fluid flow and minimizes pressure drop.
- Cost-Effective Maintenance: Durable material that reduces replacement and maintenance costs.
Types of Stainless Steel 317 Buttweld Fittings We Offer
We provide a complete range of Stainless Steel 317 Pipe Fittings in both seamless and welded types, catering to diverse industrial applications.
➤ SS 317 Elbow (UNS S31700 Pipe Elbow)
Available in 45°, 90°, and 180° angles, elbows are used to change the direction of fluid flow in piping systems. Our SS 317 Elbows are designed to handle high pressure and temperature conditions effectively. (Also available as ASTM A403 WP317 Elbow and ANSI B16.9 standard.)
➤ SS 317 Tee
Equal and Reducing Tees are used to combine or divide fluid flow. Made from ASTM A403 WP317 material, these tees offer smooth flow transitions without turbulence.
➤ SS 317 Reducer (ANSI B16.9 Stainless Steel 317 Reducer)
Reducers are used to connect pipes of different diameters. We manufacture both Concentric and Eccentric Reducers that ensure smooth flow with minimal friction losses. As a trusted SS 317 Reducer Trader, we supply reducers suitable for various pressure ratings and industrial requirements.
➤ SS 317 Pipe Cap (ANSI B16.9 SS 317 Pipe Cap)
Pipe Caps are essential to seal pipe ends securely. Our SS 317 Pipe Caps are used to close pipelines during maintenance or at the end of line systems. They are resistant to corrosion, ensuring a leak-free seal in aggressive environments.
➤ SS 317 Stub End (DIN 1.4438 Stub End)
Stub Ends are used in conjunction with Lap Joint Flanges. These are commonly used in systems that require frequent dismantling for inspection or cleaning. We provide both Short Stub Ends and Long Stub Ends as per international specifications.
➤ SS 317 Pipe Bend (ASME SA403 SS 317 Pipe Bend Manufacturer in India)
Pipe bends help in routing piping systems around obstacles without cutting or welding multiple fittings. As a leading ASME SA403 SS 317 Pipe Bend Manufacturer in India, we offer seamless and welded bends with excellent dimensional accuracy.
➤ SS 317 Cross
Pipe crosses are used when four pipes meet at a single junction. Our SS 317 Cross Fittings are available in equal and reducing configurations, ensuring even flow distribution.
➤ SS 317L Buttweld Pipe Fittings
We also stock and export Stainless Steel 317L Buttweld Pipe Fittings, a low-carbon variant (UNS S31703) that offers improved resistance to intergranular corrosion and excellent weldability, making it suitable for heat-affected environments.
Applications of Stainless Steel 317 Buttweld Pipe Fittings
Because of their superior corrosion and heat resistance, SS 317 Pipe Fittings are used in a wide range of industries, including:
- Chemical Processing Plants – Resistant to sulfuric and acetic acid corrosion.
- Marine and Offshore Applications – Withstand saline water and chloride stress corrosion.
- Pulp and Paper Industry – Durable against bleaching chemicals.
- Pharmaceutical Equipment – Suitable for hygienic and sterile processing.
- Power Generation – Used in high-temperature boiler and heat exchanger systems.
- Food and Beverage Industry – Safe and resistant to contamination and oxidation.
Standards and Specifications of Stainless Steel 317
| Specification | Details |
|---|---|
| Standard | ASTM A403 / ASME SA403 |
| Grade | WP317, WP317L |
| UNS | S31700 / S31703 |
| DIN | 1.4438 |
| Size Range | ½” to 48” (Seamless & Welded) |
| Dimensions | ASME B16.9, ASME B16.28, MSS SP-43, MSS SP-79 |
| Type | Seamless, Welded, ERW, Fabricated |
| Form | Elbow, Tee, Reducer, Stub End, Cap, Cross, Bend |
| End Connection | Beveled, Plain, Threaded |
Mechanical Properties of Stainless Steel 317
| Property | Value |
|---|---|
| Tensile Strength | 515 MPa (min) |
| Yield Strength | 205 MPa (min) |
| Elongation | 35% (min) |
| Hardness | 217 HB (max) |
Chemical Composition of Stainless Steel 317
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Manganese (Mn) | ≤ 2.0 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.03 |
| Silicon (Si) | ≤ 0.75 |
| Chromium (Cr) | 18.0 – 20.0 |
| Nickel (Ni) | 11.0 – 15.0 |
| Molybdenum (Mo) | 3.0 – 4.0 |
MSS SP-43 or MSS SP-79 Stainless Steel 317 Welded Pipe Fittings Supplier in India
We are one of the leading MSS SP-43 / MSS SP-79 Stainless Steel 317 Welded Pipe Fittings Suppliers in India, providing fittings that comply with all mechanical and dimensional standards. Our welded fittings are known for their robust construction, excellent surface finish, and tight tolerances.
These fittings are suitable for both low-pressure and high-pressure applications, ensuring superior performance in critical systems.
Why Choose Us as Your Stainless Steel 317 Pipe Fittings Manufacturer?
As a trusted Stainless Steel 317 Pipe Fittings Manufacturer and Exporter, we focus on precision engineering, reliable performance, and quality assurance. Here’s what makes us a preferred partner for clients worldwide:
- Quality Assurance: Every fitting undergoes strict testing including hydrostatic, radiographic, and ultrasonic inspections.
- Wide Inventory: We stock a full range of SS WP317 Butt weld Pipe Fittings ready for immediate dispatch.
- Customization: We offer tailor-made fittings as per project drawings or custom dimensions.
- Global Reach: Recognized as a Global Supplier of SS WP317 Buttweld Pipe Fittings, we export to over 40 countries.
- Competitive Pricing: Get premium-grade fittings at cost-effective prices without compromising on quality.
- Timely Delivery: Efficient logistics ensure on-time dispatch for domestic and international orders.
Stainless Steel EN 10204 3.1 / 3.2 Fittings Manufacturer & Supplier in India
Stainless Steel 317 Buttweld Fittings from Solitaire Fittings offer outstanding corrosion resistance, durability, and performance in harsh environments. Whether you need ANSI B16.9 SS 317 Pipe Cap, DIN 1.4438 Stub End, or ASME SA403 SS 317 Pipe Bend, we deliver quality products that meet international standards
As a trusted Stainless Steel 317 Pipe Fittings Manufacturer and Global Supplier, we are committed to providing high-quality fittings that add value, reliability, and longevity to your piping systems.
Request Your Stainless Steel 317 Buttweld Fittings Quote Today!
