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ASTM A269/A269M is the standard specification for seamless and welded austenitic stainless steel tubing used in general corrosion-resistant and low or high-temperature service applications.
This specification covers stainless steel grades such as 304, 304L, 316, 316L, 321, and 347, which are widely used in industrial systems requiring excellent corrosion resistance, clean internal surface quality, and reliable mechanical performance.
ASTM A269 tubing is commonly applied in heat exchangers, condensers, boilers, chemical processing systems, food processing pipelines, pharmaceutical equipment, and instrumentation lines.
All tubes are manufactured under strict requirements for chemical composition, mechanical properties, surface finish, and non-destructive testing to ensure stable performance in critical environments.
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What is ASTM A269/A269M Stainless Steel Tube?
ASTM A269/A269M stainless steel tubing is a standard specification for seamless and welded austenitic stainless steel tubes used in general corrosion-resistant, high-temperature, and low-temperature service applications.
It covers common grades such as 304, 304L, 316, 316L, 321, and is widely used in:
Heat exchangers
Boilers & condensers
Instrumentation systems
Chemical processing equipment
Food & pharmaceutical pipelines
ASTM A269 tubes are manufactured under strict requirements for chemical composition, mechanical properties, and non-destructive testing (NDT) to ensure reliability in critical industrial environments.
Product Overview
ASTM A269 stainless steel tubing is designed for precision fluid transport systems where corrosion resistance, cleanliness, and durability are essential.
It is available in both:
Seamless Stainless Steel Tube (higher pressure resistance)
Welded Stainless Steel Tube (cost-effective and widely used)
These tubes are produced with controlled tolerances and high-quality finishing to ensure smooth internal surfaces and reliable flow performance.
Available Stainless Steel Grades
We supply full ASTM A269 material grades:
304 / 304L Stainless Steel Tube
316 / 316L Stainless Steel Tube
321 Stainless Steel Tube
347 Stainless Steel Tube
👉 304/304L: General corrosion resistance, widely used
👉 316/316L: Enhanced resistance to chlorides and marine environments
👉 321: High-temperature stability
👉 347: Improved intergranular corrosion resistance
Manufacturing Types
Seamless Stainless Steel Tube
No welded seam
Higher pressure resistance
Ideal for critical applications
Better mechanical integrity
Welded Stainless Steel Tube
Cost-efficient production
Suitable for general service systems
Good dimensional accuracy
Widely used in heat exchangers
Testing & Quality Standards
All ASTM A269 stainless steel tubes are strictly tested under international standards:
Hydrostatic Testing or NDT (Non-Destructive Testing)
Eddy Current Testing
Flattening Test
Flare Test
Hardness Test
Chemical Composition Analysis
Dimensional Inspection
👉 Ensures full compliance with ASTM A269 / A269M requirements.
Specification
Standard: ASTM A269/A269M-2019
Grade: TP304, TP304L, TP304LN, TP316, TP316L, TP316LN, TP317, TP321, TP347, TP348, TP XM-10, TP XM-11, TP XM-15, TP XM-19, TP XM-29, S31254, S31725, S31726, S30600, S24565, S32654, S35045, N08367, N08926, N08094 (904L)
Outside Diameter: 1/4" - 14" (6.35mm - 355.6mm)
Wall Thickness: 0.5 - 25.4mm
Length: 1000mm - 36000mm
ASTM A269 Stainless Steel Tubing Chemical Composition (weight%)
|
Grade |
UNS |
C |
Mn |
Si |
P |
S |
Cr |
Mo |
Ni |
N |
Other |
|
TP304 |
S30400 |
0.07 |
2.00 |
1.00 |
0.045 |
0.030 |
17.5-19.5 |
- |
8.0-11.0 |
||
|
TP304L |
S30403 |
0.030 |
2.00 |
1.00 |
0.045 |
0.030 |
17.5-19.5 |
- |
8.0-12.0 |
||
|
TP304LN |
S30453 |
0.035 |
2.00 |
1.00 |
0.045 |
0.030 |
18.0-20.0 |
8.0-11.0 |
0.10-0.16 |
||
|
TP316 |
S31600 |
0.08 |
2.00 |
1.00 |
0.045 |
0.030 |
16.0-18.0 |
2.00-3.00 |
10.0-14.0 |
0.10 |
|
|
TP316L |
S31603 |
0.035 |
2.00 |
1.00 |
0.045 |
0.030 |
16.0-18.0 |
2.00-3.00 |
10.0-15.0 |
0.10 |
|
|
TP316LN |
S31653 |
0.035 |
2.00 |
1.00 |
0.045 |
0.030 |
16.0-18.0 |
2.00-3.00 |
10.0-14.0 |
0.10-0.16 |
|
|
TP317 |
S31700 |
0.08 |
2.00 |
1.00 |
0.045 |
0.030 |
18.0-20.0 |
3.00-4.00 |
11.0-15.0 |
||
|
TP321 |
S32100 |
0.08 |
2.00 |
1.00 |
0.045 |
0.030 |
17.0-19.0 |
9.0-12.0 |
|
||
|
TP347 |
S34700 |
0.08 |
2.00 |
1.00 |
0.045 |
0.030 |
17.0-19.0 |
9.0-12.0 |
10xC min, 1.10 max Nb |
||
|
TP348 |
S34800 |
0.08 |
2.00 |
1.00 |
0.045 |
0.030 |
17.0-19.0 |
9.0-12.0 |
0.10 max Ta 0.20 max Co |
||
|
S32654 |
0.020 |
2.0-4.0 |
0.50 |
0.030 |
0.005 |
24.0-25.0 |
7.0-8.0 |
21.0-23.0 |
0.45-0.55 |
0.30-0.60 Cu |
|
|
N08367 |
0.030 |
2.00 |
1.00 |
0.040 |
0.030 |
20.0-22.0 |
23.5-25.5 |
0.18-0.25 |
0.75 max Cu |
||
|
N08926 |
0.020 |
2.00 |
0.50 |
0.030 |
0.010 |
19.0-21.0 |
24.0-26.0 |
0.15-0.25 |
0.50-1.50 Cu |
||
|
904L |
N08904 |
0.020 |
2.00 |
1.00 |
0.045 |
0.035 |
19.0-23.0 |
4.00-5.00 |
23.0-28.0 |
0.10 |
1.00-2.00 Cu |
Orders for material under this specification should include the following, as required, to describe the desired material adequately:
1.1 Quantity (feet, metres, or number of lengths),
1.2 Name of material (seamless or welded tubes)
1.3 Grade:
1.4 Size (outside diameter and nominal wall thickness)
1.5 Length (specific or random)
1.6 Optional requirements (heat treatment; hydrostatic or nondestructive electric test),
1.7 Test report required (see Specification A 1016/A 1016M),
1.8 Specification designation
1.9 Special requirements and any supplementary requirements selected.
Applications
ASTM A269 stainless steel tubing is widely used in:
Heat Transfer Systems
Heat exchangers
Condensers
Evaporators
Industrial Processing
Chemical processing equipment
Refinery pipelines
Oil & gas instrumentation
Power & Energy
Boiler systems
Thermal power plants
Nuclear auxiliary systems
Food & Pharmaceutical
Hygienic fluid pipelines
Sterile process systems
Beverage production lines
General Engineering
Instrumentation tubing
Hydraulic systems
Precision fluid control systems
Key Features
Excellent corrosion resistance
High temperature and pressure performance
Smooth internal surface finish
Stable mechanical properties
Available in seamless and welded types
Suitable for critical industrial environments
Long service life with low maintenance cost
Why Choose Our ASTM A269 Tubing?
Full range: 304 / 316 / 321 / 347
Seamless & welded production lines
Strict quality inspection system
Third-party inspection available (SGS / BV / TUV)
Stable global export supply
Custom size and thickness available
Fast delivery capability
Quality Assurance & Inspection
We implement a strict quality control system covering every production stage:
Raw material traceability system
Online production monitoring
Surface and dimensional inspection
Mechanical and chemical testing
Third-party certification support
All products meet ASTM A269 / A269M international standards.
Products Manufacture
1. The tubes shall be made by the seamless or welded process.
2. At the manufacturer's option, the tubing may be furnished either hot finished or cold finished.
Products Heat Treatment
1. All material shall be furnished in heat-treated condition. Except as provided in 6.2, the heat-treatment procedure shall, except for S31254 and S32654, S24565, N08367, N08904and N08926, consist of heating the material to a minimum temperature of 1900°F (1040°C) and quenching in water or rapidly cooling by other means. Alternatively, for seamless tubes, immediately following hot forming while the temperature of the tubes is not less than the specified minimum solution treatment temperature, tubes may be individually quenched in water or rapidly cooled by other means.
2. Controlled structural or special service characteristics shall be specified as a guide for the most suitable heat treatment. If the final heat treatment is at a temperature under 1900°F and is so specified on the order, each tube shall be stencilled with the final heat treatment temperature in degrees Fahrenheit after the suffix "HT".
3. S31254 and S32654 shall be heat-treated to a minimum temperature of 2100°F (1150°C) followed by quenching in water or rapidly cooling by other means.
4. S24565 shall be heat-treated in the range 2050°F (1120°C) to 2140°F (1170°C) followed by quenching in water or rapidly cooling by other means.
5. N08904 shall be heat treated to a minimum temperature of 2000°F (1100°C) followed by quenching in water or rapidly cooling by other means.
6. A solution annealing temperature above 1950°F (1065°C) may impair the resistance to intergranular corrosion after subsequent exposure to sensitizing conditions in TP321, TP347, and TP348. When specified by the purchaser, a lower temperature stabilization or re-solution anneal shall be used subsequent to the initial high-temperature solution anneal.
7. N08926 shall be heat-treated to a minimum temperature of 2010°F (1100°C) followed by quenching in water or rapidly cooling by other means.
8. UNS N08367 should be solution annealed from 2025°F (1107°C) minimum followed by rapid quenching.
9. Solution annealing of S35045 shall consist of heating the material to a temperature of 2000°F (1093°C) minimum for an appropriate time, followed by cooling in still air or at a faster rate.
Products Surface Condition
The tubes shall be pickled free of scale. When bright annealing is used, pickling is not necessary.
Products Marking
In addition to the marking prescribed in Specification A 1016/A 1016M, the marking shall include whether the tubing is seamless or welded and the final heat-treatment temperature in degrees Fahrenheit after the suffix "HT" if the final heat treatment temperature is under 1900°F (1040°C).
When the Nondestructive Electric Test is performed, each length of tubing shall be marked with the letters "NDE" and the certification, when required, shall also indicate this test.
Products Packing
Hexagonal bundles, Plywood Boxes, Wooden crates, steel-framed boxes.
FAQ – ASTM A269/A269M Stainless Steel Tube
1. What is ASTM A269 stainless steel tubing used for?
ASTM A269 tubing is used for corrosion-resistant and temperature-resistant fluid transport systems, including heat exchangers, boilers, condensers, chemical pipelines, and instrumentation lines.
2. What is the difference between ASTM A269 seamless and welded tube?
Seamless tube: No weld seam, higher pressure resistance, ideal for critical and high-performance systems
Welded tube: More cost-effective, widely used in general service and heat transfer systems
3. What stainless steel grades are included in ASTM A269?
Common grades include:
304 / 304L stainless steel
316 / 316L stainless steel
321 stainless steel
347 stainless steel
4. Is ASTM A269 suitable for heat exchanger applications?
Yes. ASTM A269 is one of the most commonly used specifications for heat exchanger tubes, condensers, and evaporators due to its corrosion resistance and stable mechanical properties.
5. Can ASTM A269 stainless steel tubing be used in chemical environments?
Yes. Especially 316/316L grades, which offer excellent resistance to chlorides, acids, and chemical corrosion environments.
6. What testing is required for ASTM A269 tubes?
Typical testing includes:
Hydrostatic or NDT testing
Eddy current testing
Flattening test
Flare test
Chemical composition analysis
Mechanical property testing
7. What industries commonly use ASTM A269 tubing?
Chemical processing industry
Oil & gas instrumentation systems
Power generation plants
Food & pharmaceutical production
HVAC and heat exchange systems
8. What is the surface condition of ASTM A269 tubing?
ASTM A269 tubing requires a clean, smooth internal surface finish, ensuring good flow performance and reducing contamination risk in sensitive systems.
9. What is the advantage of ASTM A269 stainless steel tube?
It provides:
High corrosion resistance
Excellent cleanliness
Stable performance under pressure and temperature
Long service life with low maintenance
10. Can ASTM A269 tubing be customized?
Yes, it can be customized in:
Outer diameter (OD)
Wall thickness
Length
Surface finish
Packaging requirements
Contact Us
For quotation, technical support, or bulk orders:
Phone/WhatsApp/WeChat: +8615769214734
Email: office@dongmjd.com
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