Buy high-quality Stainless Steel Seamless Tubes (ASTM A269), including precision tubing, polished tubes, bright annealed tubes, heat exchanger tubes, and cold-drawn tubes. Available in various sizes at competitive industry prices. Contact us to send your bulk requirements.
At New Eagle Industrial Corporation, we supply premium Stainless Steel Seamless Tubes manufactured to international standards such as ASTM A269. These tubes are produced without welding, ensuring a continuous, defect-free surface that provides superior strength, high corrosion resistance, and uniform mechanical properties. Available in grades such as TP316, TP316L, TP317, TP317L, TP904, and TP904L, our tubes are suitable for chemical processing, heat exchangers, power plants, marine applications, and industrial piping systems.
SS Seamless Tubing undergo precision cold drawing, annealing, and bright finishing, resulting in smooth internal and external surfaces suitable for high-performance applications. Each tube is rigorously tested for tensile strength, yield strength, elongation, and hardness, and inspected to ensure dimensional accuracy, wall thickness consistency, and ovality. The combination of advanced metallurgy, controlled production processes, and stringent quality control ensures that our tubes consistently meet the most exacting industrial standards.
we prioritize both product quality and customer convenience. A269 Seamless Tubes are packed securely in wooden crates or steel strips, preventing surface damage during transit. Each shipment is accompanied by mill test certificates (MTC), chemical composition reports, and mechanical property certificates, guaranteeing compliance with international standards. With our competitive pricing, reliable supply chain, and commitment to bulk orders, we deliver tubes that combine precision, durability, and superior corrosion resistance to meet the needs of global industries.
High-Quality Stainless Steel Seamless Tubes – Technical Specifications
ASTM A269 SS Seamless Tubes – Chemical Composition
ASTM A269 SS Seamless Tubes are manufactured for high corrosion resistance, durability, and thermal stability. Low carbon grades (L grades) are ideal for welded applications, while 904L is highly resistant to acids and chlorides.
| Grade | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Ni (%) | Mo (%) | Cu (%) | N (%) |
|---|---|---|---|---|---|---|---|---|---|---|
| 316 | 0.08 max | 1.0 | 2.0 | 0.045 max | 0.03 max | 16–18 | 10–14 | 2–3 | – | 0.10 max |
| 316L | 0.03 max | 1.0 | 2.0 | 0.045 max | 0.03 max | 16–18 | 10–14 | 2–3 | – | 0.10 max |
| 317 | 0.08 max | 1.0 | 2.0 | 0.045 max | 0.03 max | 18–20 | 11–15 | 3–4 | – | 0.10 max |
| 317L | 0.03 max | 1.0 | 2.0 | 0.045 max | 0.03 max | 18–20 | 11–15 | 3–4 | – | 0.10 max |
| 904L | 0.02 max | 1.0 | 2.0 | 0.045 max | 0.03 max | 19–23 | 24–28 | 4–5 | 1–2 | 0.10 max |
Stainless Steel Polished Tubes – Mechanical Properties
Mechanical properties are for the annealed condition. Low-carbon “L” grades offer better weldability with minimal carbide precipitation, while 904L provides high corrosion resistance in acidic and chloride environments with maintained strength.
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HRB) |
|---|---|---|---|---|
| 316 | 515–720 | 205–310 | 40 min | 79–92 |
| 316L | 485–620 | 170–275 | 40 min | 79–92 |
| 317 | 515–720 | 205–310 | 40 min | 79–92 |
| 317L | 485–620 | 170–275 | 40 min | 79–92 |
| 904L | 485–620 | 170–310 | 40 min | 79–90 |
SS Cold Drawn Seamless Tubes – Equivalent Grades
ASTM A269 Stainless Steel Seamless Tubes are available in grades 316, 316L, 317, 317L, and 904L, with equivalents in DIN, JIS, UNS, GOST, and BS standards. These equivalents ensure global compatibility and ease of sourcing for industrial applications.
| Grade | DIN / EN | JIS | UNS | GOST | BS |
|---|---|---|---|---|---|
| 316 | 1.4401 | SUS316 | S31600 | 08Х17Н13М2 | 316S31 |
| 316L | 1.4404 | SUS316L | S31603 | 08Х17Н13М3 | 316S16 |
| 317 | 1.4436 | SUS317 | S31700 | 08Х19Н13М2 | 317S31 |
| 317L | 1.4439 | SUS317L | S31703 | 08Х19Н13М3 | 317S16 |
| 904L | 1.4539 | SUS904L | N08904 | ХН35Ю | 904S16 |
Why are Stainless Steel Seamless Tubes preferred over welded tubes in high-pressure applications?
- Seamless Construction: Stainless steel seamless tubes are manufactured without any welded seams, eliminating potential weak points that may fail under high pressure.
- Uniform Wall Thickness: They offer consistent wall thickness and mechanical properties along the entire length, ensuring reliable performance.
- High-Pressure Suitability: Ideal for piping systems, chemical reactors, and heat exchangers where structural integrity and safety are critical.
- Enhanced Durability: Seamless manufacturing ensures better resistance to dynamic stresses, vibrations, and thermal cycling compared to welded tubes.
- Dimensional Accuracy: The process provides precise outer diameter (OD) and wall thickness, which is crucial for tight-fitting assemblies in industrial applications.
- Corrosion and Stress Resistance: Seamless tubes show improved performance in corrosive environments and under high-pressure operational conditions, making them suitable for chemical, marine, and offshore industries.
How does the SS Cold Drawing process improve tube properties?
- Controlled Diameter Reduction: Cold drawing reduces the tube’s OD and wall thickness without heating, producing tight dimensional tolerances.
- Enhanced Surface Finish: Results in smooth internal and external surfaces, reducing fluid friction and improving flow efficiency.
- Strain Hardening: The process increases tensile strength, yield strength, and hardness, providing improved mechanical performance.
- Dimensional Precision: Cold-drawn tubes maintain exact OD, wall thickness, and roundness, essential for mechanical, instrumentation, and high-precision applications.
- Flexibility in Fabrication: These tubes are easier to bend, form, and expand while maintaining structural integrity.
- Consistency: Ensures homogeneous metallurgical properties throughout the tube length, reducing variability in high-performance applications.
What testing ensures the quality of Stainless Steel Seamless Tubes?
- Mechanical Testing:
- Tensile Test: Measures ultimate tensile strength and yield strength.
- Elongation Test: Determines ductility and flexibility of the material.
- Hardness Test: Confirms surface and material hardness according to standards (HRB/HRC).
- Chemical Analysis:
- Confirms the alloy composition (Cr, Ni, Mo, C, Mn, Si, P, S, N) using spectrometry or wet chemical methods.
- Ensures compliance with standards like ASTM A269 / A213 / A312.
- Non-Destructive Testing (NDT):
- Eddy Current Test: Detects surface and near-surface defects.
- Ultrasonic Testing (UT): Identifies internal flaws such as cracks or voids.
- Hydrostatic Test: Ensures tubes can withstand operational pressures without leakage or deformation.
- Surface Inspection:
- Checks for smooth internal and external finishes, free from scratches, pits, or cracks.
- Ensures the tube’s surface is suitable for fluid transport and high-precision applications.
- Dimensional Verification:
- Ensures OD, wall thickness, and roundness are within specified tolerances.
- Confirms compatibility for fittings, flanges, and industrial assembly requirements.
Global Export Network for Stainless steel Seamless Tubing
As a trusted manufacturer and exporter, New Eagle Steel supplies A269 Stainless Steel seamless tubes 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
Industry Applications for Stainless Steel Seamless & cold drawn Tubes
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
