- Standards
-
Material Grades
-
Outer Diameter
- Wall Thickness
- Tube Type
- MTC
- Certificate
- ASTM A269 / ASME SA269
- TP304/304L, TP316/316L, TP309/309S, TP310/310S, TP321/321H, TP347/347H
- 1/4″ - 12"
- 0.035″ - 0.12″
- Welded , Seamless
- EN10204 3.1
- ISO 9001:2015 , PED 2014/68/EU , AD 2000-WO
- 6.35mm - 304.8mm
- 0.89mm - 3.05mm
Dimension of ASTM A269 Stainless Steel Tubes
| DN | Tube OD | Wall Thickness | OD Tolerance | WT Tolerance | Length Tolerance | Weight |
|---|---|---|---|---|---|---|
| inch(mm) | inch(mm) | inch(mm) | inch(mm) | (kg/m) | ||
| 8 | 1/4" (6.35) | 0.035" (0.89) | +/-0.005" (0.13) | +/-10.0% | +1/8" (3.18) -0 | 0.124 |
| 15 | 1/2" (12.7) | 0.065" (1.65) / 0.049"(1.25) | +/-0.005" (0.13) | +/-10.0% | +1/8" (3.18) -0 | 0.454 |
| 20 | 3/4" (19.1) | 0.065" (1.65) / 0.049"(1.25) | +/-0.005" (0.13) | +/-10.0% | +1/8" (3.18) -0 | 0.717 |
| 25 | 1" (25.4) | 0.065" (1.65) / 0.049"(1.25) | +/-0.005" (0.13) | +/-10.0% | +1/8" (3.18) -0 | 0.976 |
| 40 | 1-1/2" (38.1) | 0.065" (1.65) / 0.049"(1.25) | +/-0.008" (0.20) | +/-10.0% | +1/8" (3.18) -0 | 1.50 |
| 50 | 2" (50.8) | 0.065" (1.65) / 0.049"(1.25) | +/-0.008" (0.20) | +/-10.0% | +1/8" (3.18) -0 | 2.02 |
| 65 | 2-1/2" (63.5) | 0.065" (1.65) | +/-0.010" (0.25) | +/-10.0% | +1/8" (3.18) -0 | 2.54 |
| 80 | 3" (76.2) | 0.065" (1.65) | +/-0.010" (0.25) | +/-10.0% | +1/8" (3.18) -0 | 3.06 |
| 100 | 4" (101.6) | 0.083" (2.11) | +/-0.015" (0.38) | +/-10.0% | +1/8" (3.18) -0 | 5.23 |
| 150 | 6" (152.4) | 0.109" (2.77) | +/-0.030" (0.76) | +/-10.0% | +1/8" (3.18) -0 | 10.32 |
| 200 | 8" (203.2) | 0.109" (2.77) | +/-0.030" (0.76) | +/-10.0% | +1/8" (3.18) -0 | 13.86 |
| 250 | 10"(254) | 0.120"(3.05) | +/-0.040" (1.016) | +/-10.0% | +1/8" (3.18) -0 | - |
| 300 | 12"(304.8) | 0.120"(3.05) | +/-0.040" (1.016) | +/-10.0% | +1/8" (3.18) -0 | - |
Tensile Properties
| Material | Heat Treatment | Yield Strength Ksi (MPa), Min. | Tensile Strength Ksi (MPa), Min. | Temperure Min. ℉(℃) | Elongation %, Min |
| ASME SA270 304 | Solution | 30(205) | 75(515) | 1900 (1040) | 35 |
| ASME SA270 304L | Solution | 25(170) | 70(485) | 1900 (1040) | 35 |
| ASME SA270 316 | Solution | 30(205) | 75(515) | 1900(1040) | 35 |
| ASME SA270 316L | Solution | 25(170) | 70(485) | 1900(1040) | 35 |
Description of ASTM A269 Stainless Steel Tube
ASTM A269 is a standard specification established by ASTM International that covers seamless and welded austenitic stainless steel tubes intended for general corrosive service and for high-temperature or low-temperature applications. It is a fundamental and widely used specification across numerous industries.
The defining characteristic of A269 tubes is their suitability for “general service.” This means they are the standard choice for a vast range of applications where corrosion resistance, pressure integrity, and cleanliness are required, but where the extreme conditions of more specialized standards (like A213 for high-pressure boilers) are not necessary.
Common Applications
The applications for A269 tubing are extensive due to its versatility.
Heat Exchangers and Condensers: Used for the tubes that carry fluid inside a shell-and-tube heat exchanger.
Instrumentation and Process Lines: Transporting gases, liquids, and semi-fluids within a processing plant.
Food, Beverage, and Pharmaceutical Processing: Its smooth surface, cleanability, and corrosion resistance make it ideal for hygienic applications. In these industries, it is often supplied with electropolished (EP) or mechanically polished finishes.
Chemical and Petrochemical Industry: For general corrosive service in piping systems and equipment.
Hydraulic and Pneumatic Lines: Used for transmitting fluids and gases under pressure.
Architectural and Decorative Uses: When a specific structural standard is not required.
Seamless & Welded Stainless Steel Tubing
Precision-manufactured austenitic stainless steel tubing engineered for demanding service in heat exchange, chemical processing, and critical pressure systems.
1/8" – 12"
OD Range
0.028" – 0.400"
Wall Thickness
304 / 316 / 316L
Available Grades
Engineered for Critical Service Conditions
ASTM A269 covers seamless and welded austenitic stainless steel tubing for general corrosion-resistant and high-temperature service. Our manufacturing process ensures consistent wall thickness, superior surface finish, and reliable mechanical properties across every length produced.
Seamless & Welded Options
Both manufacturing methods available, selected based on application requirements, pressure ratings, and cost optimization.
Tight Dimensional Tolerances
Outside diameter tolerance of ±0.005" for sizes under 1.5" OD. Wall thickness held to ±10% of nominal.
Full Traceability
Heat-level traceability from raw material through final shipment. EN 10204 3.1 certificates provided with every order.
Material Specifications & Chemical Composition
| DN | Tube OD | Wall Thickness | OD Tolerance | WT Tolerance | Length Tolerance | Weight |
|---|---|---|---|---|---|---|
| inch(mm) | inch(mm) | inch(mm) | inch(mm) | (kg/m) | ||
| 8 | 1/4" (6.35) | 0.035" (0.89) | +/-0.005" (0.13) | +/-10.0% | +1/8" (3.18) -0 | 0.124 |
| 15 | 1/2" (12.7) | 0.065" (1.65) / 0.049"(1.25) | +/-0.005" (0.13) | +/-10.0% | +1/8" (3.18) -0 | 0.454 |
| 20 | 3/4" (19.1) | 0.065" (1.65) / 0.049"(1.25) | +/-0.005" (0.13) | +/-10.0% | +1/8" (3.18) -0 | 0.717 |
| 25 | 1" (25.4) | 0.065" (1.65) / 0.049"(1.25) | +/-0.005" (0.13) | +/-10.0% | +1/8" (3.18) -0 | 0.976 |
| 40 | 1-1/2" (38.1) | 0.065" (1.65) / 0.049"(1.25) | +/-0.008" (0.20) | +/-10.0% | +1/8" (3.18) -0 | 1.50 |
| 50 | 2" (50.8) | 0.065" (1.65) / 0.049"(1.25) | +/-0.008" (0.20) | +/-10.0% | +1/8" (3.18) -0 | 2.02 |
| 65 | 2-1/2" (63.5) | 0.065" (1.65) | +/-0.010" (0.25) | +/-10.0% | +1/8" (3.18) -0 | 2.54 |
| 80 | 3" (76.2) | 0.065" (1.65) | +/-0.010" (0.25) | +/-10.0% | +1/8" (3.18) -0 | 3.06 |
| 100 | 4" (101.6) | 0.083" (2.11) | +/-0.015" (0.38) | +/-10.0% | +1/8" (3.18) -0 | 5.23 |
| 150 | 6" (152.4) | 0.109" (2.77) | +/-0.030" (0.76) | +/-10.0% | +1/8" (3.18) -0 | 10.32 |
| 200 | 8" (203.2) | 0.109" (2.77) | +/-0.030" (0.76) | +/-10.0% | +1/8" (3.18) -0 | 13.86 |
| 250 | 10"(254) | 0.120"(3.05) | +/-0.040" (1.016) | +/-10.0% | +1/8" (3.18) -0 | - |
| 300 | 12"(304.8) | 0.120"(3.05) | +/-0.040" (1.016) | +/-10.0% | +1/8" (3.18) -0 | - |
All tubing is manufactured in compliance with ASTM A269 requirements. Chemical composition and mechanical properties per ASTM A269 Table 1.
- 304
- 304L
- 316
- 316L
- 317L
- 321
- S30400
- S30403
- S31600
- S31603
- S31703
- S32100
- 0.08%
- 0.03%
- 0.08%
- 0.03%
- 0.03%
- 0.08%
- 2.00%
- 2.00%
- 2.00%
- 2.00%
- 2.00%
- 2.00%
- 18.0–20.0
- 18.0–20.0
- 16.0–18.0
- 16.0–18.0
- 18.0–20.0
- 17.0–19.0
- 8.0–11.0
- 8.0–12.0
- 10.0–14.0
- 10.0–14.0
- 11.0–15.0
- 9.0–12.0
- —
- —
- 2.0–3.0
- 2.0–3.0
- 3.0–4.0
- —
- 75 ksi
- 70 ksi
- 75 ksi
- 70 ksi
- 75 ksi
- 75 ksi
- 30 ksi
- 25 ksi
- 30 ksi
- 25 ksi
- 30 ksi
- 30 ksi
* Additional grades available upon request including 904L, 254 SMO, and duplex grades. All values per ASTM A269-23. Elongation minimum 35% in 2 inches. Hardness: HRB 90 / HB 201 max for 304/304L, HRB 95 / HB 217 max for 316/316L.
Built for the World's Most Demanding Environments
ASTM A269 tubing serves as the backbone of critical infrastructure across energy, chemical, pharmaceutical, and food processing industries worldwide.
Chemical Processing
Corrosion-resistant tubing for reactors, heat exchangers, and process piping handling aggressive media including acids, alkalis, and chlorides.
Oil & Gas
High-pressure instrumentation lines, sample points, and process tubing for upstream, midstream, and downstream operations in hostile environments.
Pharmaceutical & Biotech
Electropolished and passivated tubing for WFI systems, CIP/SIP loops, and process lines requiring sanitary finishes and zero contamination risk.
Power Generation
Condenser and heat exchanger tubing for fossil fuel, nuclear, and renewable energy plants. Resistant to high-temperature oxidation and thermal cycling.
Food & Beverage
FDA-compliant tubing for dairy, brewing, and food processing applications. Hygienic finishes, easy to clean, and resistant to product acids.
Marine & Offshore
Superior pitting and crevice corrosion resistance for saltwater environments. Used in ballast systems, fire mains, and instrument air lines.
Every Tube Verified. Every Shipment Certified.
Our quality management system is audited annually by third-party registrars. Every production run undergoes rigorous testing before release.
Our testing laboratory performs comprehensive verification at every stage of production, ensuring full compliance with ASTM A269, ASME SA269, and customer-specific requirements.
ISO 9001:2015 Certified
Quality management system registered by accredited third-party auditor
PED 2014/68/EU Compliant
European Pressure Equipment Directive for export to EU member states
AD 2000-Merkblatt W0
German pressure vessel standard for high-integrity applications
Non-Destructive Examination
Eddy current, hydrostatic, and pneumatic testing per A450/A450M
From Raw Material to Delivered Excellence
A controlled, documented production flow ensures consistent quality from melt to shipment.
Raw Material Verification
PMI testing on incoming billets and strip. Chemical composition verified against heat certificate.
Forming & Welding
Cold pilgering or continuous TIG welding with in-process dimensional checks at every stand.
Heat Treatment & Testing
Solution annealing per grade requirements. Eddy current, hydrostatic, and flaring tests completed.
Finishing & Shipping
Pickling, passivation, cutting to length, protective packaging, and MTC preparation for dispatch.
