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At New Eagle Industrial Corporation, ASTM A312 TP317 and TP317L seamless pipes are manufactured from high-grade austenitic stainless steel using precision-controlled seamless processes. These pipes are engineered to meet stringent industrial standards, ensuring superior dimensional accuracy, uniform wall thickness, and flawless surface finish. Being seamless, they eliminate the risks associated with weld seams, providing exceptional structural integrity under high-pressure and high-temperature conditions.
SS 317 SMLS Pipes are specifically designed for aggressive environments. The high molybdenum content enhances resistance to chloride-induced corrosion, pitting, and intergranular attack. TP317L, with its low carbon content, minimizes carbide precipitation during welding. These pipes maintain integrity even in acidic or chloride-rich fluids, ensuring long-term reliability for critical industrial systems.
We ensure that every 317L SS Seamless Pipe is fully compliant with ASTM A312, ASME SA312, and equivalent international standards. Our pipes undergo rigorous hydrostatic testing, mechanical testing, and positive material identification (PMI) to guarantee chemical composition accuracy, pressure-handling capability, and surface integrity.
We offer a comprehensive range of sizes and schedules, from small-diameter smls pipes to large-bore industrial pipelines. As a trusted manufacturer and exporter, We cater to both domestic and international clients, delivering customized solutions that meet unique project requirements.
Our team of experienced engineers provides professional guidance on material selection, application suitability, welding practices, and installation techniques. With us, clients gain not only superior quality products but also reliable technical support for successful project execution.
Stainless Steel 317L Seamless Pipes – Technical Specifications
TP317 Stainless Steel Seamless Pipe – Chemical Composition
TP317L is a low-carbon stainless steel with excellent weldability, minimizing carbide precipitation. Its high Mo and Ni content resist chloride corrosion, while low P and S ensure long-term durability.
| Element | TP317 (%) | TP317L (%) |
|---|---|---|
| Carbon (C) | ≤0.08 | ≤0.03 |
| Manganese (Mn) | 2.0 max | 2.0 max |
| Phosphorus (P) | 0.045 max | 0.045 max |
| Sulfur (S) | 0.03 max | 0.03 max |
| Silicon (Si) | 1.0 max | 1.0 max |
| Chromium (Cr) | 18–20 | 18–20 |
| Nickel (Ni) | 11–14 | 11–14 |
| Molybdenum (Mo) | 3–4 | 3–4 |
ASTM A312 TP317L SMLS Pipe – Mechanical Properties
TP317L has similar mechanical properties to TP317, but its low carbon content improves weldability and reduces risk of intergranular corrosion in welded areas.
| Property | TP317 | TP317L |
|---|---|---|
| Tensile Strength (MPa) | 515–720 | 515–720 |
| Yield Strength (MPa) | 205 min | 205 min |
| Elongation (%) | 40 min | 40 min |
| Hardness (HRB) | 79 max | 79 max |
| Impact Toughness (J) | ≥80 | ≥80 |
SS 317 / 317L Stainless Steel Seamless Pipe – Equivalent Grades
This table lists the international equivalent grades of TP317 and TP317L stainless steel pipes across ASTM, EN/DIN, JIS, UNS, GOST, and BS standards. TP317L is the low-carbon version, ideal for welded and highly corrosive applications.
| Standard | TP317 | TP317L |
|---|---|---|
| ASTM / ASME | TP317 | TP317L |
| EN / DIN | 1.4438 | 1.4438 / 1.4439 |
| JIS | SUS317 | SUS317L |
| UNS | S31700 | S31703 |
| GOST | 08Х19Н10М3 | 08Х19Н10М3Л |
| BS / EN | 317S31 | 317S31L |
What is the difference between TP317 and TP317L seamless pipes?
TP317 Seamless Pipes:
- Carbon Content: Contains a higher carbon level, up to 0.08%, which contributes to slightly higher tensile and yield strength at ambient temperatures.
- Corrosion Resistance: Offers good corrosion resistance, particularly against chlorides and acids, but slightly less effective in welded areas compared to TP317L.
- Welding Suitability: Can be welded, but care is needed to avoid intergranular corrosion in heat-affected zones. Less ideal for extensive welded piping systems.
- Applications: Best suited for moderate corrosion environments, chemical processing units with minimal welding, and general industrial pipelines.
TP317L Seamless Pipes:
- Low Carbon Content: Contains ≤0.03% carbon, significantly lower than TP317, which reduces the risk of carbide precipitation during welding.
- Enhanced Weldability: Ideal for welded piping systems; maintains mechanical strength and corrosion resistance even in heat-affected zones.
- Superior Corrosion Resistance: High molybdenum content combined with low carbon ensures excellent protection against chloride-induced corrosion, pitting, and intergranular attack.
- Applications: Preferred for marine, offshore, chemical, petrochemical, and pharmaceutical piping systems, especially where frequent welding or highly corrosive fluids are involved.
How do TP317 and TP317L pipes perform in high-corrosion environments?
- TP317: Suitable for moderate chemical exposure and mildly corrosive media.
- TP317L: Superior performance in highly corrosive environments, including seawater, chemical processing, and chloride-rich fluids.
- Both grades offer long-term durability, but TP317L is preferred when welding is frequent or corrosion is aggressive.
Why choose TP317L over TP317 for modern industrial pipelines?
- Optimized for Welded Systems: TP317L’s low carbon content (≤0.03%) minimizes carbide precipitation during welding, ensuring that the integrity of welded joints is maintained without risk of intergranular corrosion.
- Superior Corrosion Resistance: The combination of high molybdenum content and low carbon makes TP317L highly resistant to chloride-induced corrosion, pitting, and harsh chemical exposure, outperforming TP317 in aggressive environments.
- Enhanced Durability and Longevity: TP317L seamless pipes deliver long-term reliability, even under continuous exposure to corrosive fluids, high temperatures, and high-pressure conditions.
- Versatile Industrial Applications: Ideal for marine, offshore, chemical, petrochemical, and pharmaceutical pipelines, where both safety and consistent performance are critical.
- High Structural Integrity: Despite its low carbon content, TP317L maintains excellent tensile strength, ductility, and toughness, ensuring robust performance in demanding industrial pipelines.
Global Export Network for SS ASTM A312 TP317/317L Seamless Pipes
As a trusted manufacturer and exporter, New Eagle Steel supplies A312 Stainless Steel 317/317L Seamless Pipes globally. Our high-performance products are widely used in chemical processing, pollution control, marine, and pharmaceutical industries across Europe, the Middle East, Asia, and the Americas, ensuring exceptional corrosion resistance, reliability, and precision engineering.
- Middle East: United Arab Emirates (UAE), Saudi Arabia, Qatar, Kuwait, Oman, Bahrain, Yemen, Iran, Iraq, Israel, Jordan, Lebanon, Syria, Turkey
- North Africa: Egypt, Algeria, Morocco, Tunisia, Libya
- Asia Pacific: Singapore, Malaysia, Vietnam, Indonesia, Thailand, Philippines, Cambodia, Laos, Myanmar, Brunei, Timor-Leste, Taiwan, Japan, South Korea
- Europe: Spain, Belgium, Netherlands, France, Germany, Italy, United Kingdom (England), Poland, Cyprus, Malta, Russia
- Americas: Brazil, Mexico, Chile, Peru, Colombia, Argentina, United States (USA), Canada
- India: Chennai, Coimbatore, Bangalore, Thiruvananthapuram, Pune, Kolkata, Kerala, Karnataka, Gujarat, Mumbai, Delhi
Top Applications Industries Using Stainless Steel ASTM A269 TP317/317L Seamless Pipes
Oil & Gas Industry
Petrochemical & Chemical Processing
Power Generation (Thermal, Nuclear & Renewable)
Marine & Offshore Engineering
Pharmaceuticals & Biotechnology
Food, Beverage & Dairy Processing
Pulp & Paper Industry
Aerospace & Defense
Automotive & Transportation
Instrumentation & Control Systems
Water Treatment & Desalination
HVAC & Heat Exchanger Systems
Construction & Infrastructure Projects
Mining & Metallurgy
