ASTM A249/A269 Stainless Steel Heat Exchanger Tubing
Stainless steel tubes are widely used in heat exchangers due to their corrosion resistance, thermal conductivity, and durability in high-pressure and high-temperature environments. Common applications include chemical processing, oil & gas, power plants, HVAC, and food/pharmaceutical industries.
- Standard:
- Grades:
- Outer Diameter:
- Wall Thickness:
- Length:
- Surface Finishes:
- Application:
- ASTM A249/ASME SA249, ASTM A269 (Welded), EN10217-7, JIS G3463
- TP304/304L, TP316/316L, TP309S, TP310S, TP321, TP321H, TP347, TP347H, Duplex 2205 / S31803, etc.
- 1/4"-8" , 6.35-203.2mm
- 0.02"-0.2" , 0.5-5mm
- Up to 24m / 80feet (custom lengths available)
- Annealed & Pickled, Bright Annealed (BA), Electropolished (EP)
- Boiler, Superheater, Heat Exchanger, Condenser, Evaporator
For more technical requirements and dimension specifications, please contact us to obtain support from our Engineering Department.
Order Display
| Size OD | Wall Thickness | Tolerance of OD | Tolerance of Length | Tolerance of WT | |||||
|---|---|---|---|---|---|---|---|---|---|
| inch(mm) | Gauge | inch(mm) | inch(mm) | inch(mm) | |||||
| 1/4"(6.35) | 18 | 0.049"(1.25)/0.039"(1.0) | +/-0.005(0.13) | +1/8"(3.18)-0 | +/-10.0% | ||||
| 3/8"(9.53) | 18 | 0.049"(1.25)/0.039"(1.0) | +/-0.005(0.13) | +1/8"(3.18)-0 | +/-10.0% | ||||
| 1/2"(12.7) | 16/18 | 0.065"(1.65)/0.049"(1.25) | +/-0.005(0.13) | +1/8"(3.18)-0 | +/-10.0% | ||||
| 3/4" (19.1) | 16/18 | 0.065" (1.65)/0.049"(1.25) | +/-0.005(0.13) | +1/8"(3.18)-0 | +/-10.0% | ||||
| 1" (25.4) | 16/18 | 0.065" (1.65)/0.049"(1.25) | +/-0.005(0.13) | +1/8"(3.18)- 0 | +/-10.0% | ||||
| 1-1/2"(38.1) | 16/18 | 0.065" (1.65)/0.049"(1.25) | +/-0.008"(0.20) | +1/8"(3.18)-0 | +/-10.0% | ||||
| 2"(50.8) | 16/18 | 0.065" (1.65)/0.049"(1.25) | +/-0.008"(0.20) | +1/8" (3.18)-0 | +/-10.0% | ||||
| 2-1/2"(63.5) | 16 | 0.065"(1.65) | +/-0.010"(0.25) | +1/8"(3.18)-0 | +/-10.0% | ||||
| 3"(76.2) | 16 | 0.065" (1.65) | +/-0.010"(0.25) | +1/8"(3.18)-0 | +/-10.0% | ||||
| 4" (101.6) | 14 | 0.083" (2.11) | +/-0.015"(0.38) | +1/8" (3.18)-0 | +/-10.0% | ||||
| 6" (152.4) | 14 | 0.083" (2.11) | +/-0.030"(0.76) | +1"(25.4)-0 | +/-10.0% | ||||
| 8" (203.2) | 12 | 0.109"(2.77) | +0.061"(1.55) -0.031"(0.79) | +1"(25.4)-0 | +/-10.0% | ||||
| Grade | C(max) | Si(max) | P(max) | S(max) | Cr | Ni | Mo | Ti |
|---|---|---|---|---|---|---|---|---|
| TP304/1.4301 | 0.08 | 1 | 0.045 | 0.03 | 18.0-20.0 | 8.0-10.5 | ||
| TP304L/1.4307 | 0.035 | 1 | 0.045 | 0.03 | 18.0-20.0 | 8.0-12.0 | ||
| TP304H/1.4948 | 0.04-0.10 | 1 | 0.045 | 0.03 | 18.0-20.0 | 8.0-12.0 | ||
| TP316/1.4401 | 0.08 | 1 | 0.045 | 0.03 | 16.0-18.0 | 11.0-14.0 | 2.0-3.0 | |
| TP316L/1.4404 | 0.035 | 1 | 0.045 | 0.03 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | |
| TP316Ti/1.4571 | 0.08 | 1 | 0.045 | 0.03 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | 0.7>5x(C+N) |
| TP321/1.4541 | 0.08 | 1 | 0.045 | 0.03 | 17.0-19.0 | 9.0-12.0 | 0.7>5x(C+N) | |
| TP317L/1.4449 | 0.08 | 1 | 0.045 | 0.03 | 18.0-20.0 | 11.0-14.0 | 3.0-4.0 | |
| TP347H/1.4912 | 0.04-0.10 | 1 | 0.045 | 0.03 | 17.0-19.0 | 9.0-13.0 | ||
| TP309S/1.4833 | 0.08 | 1 | 0.045 | 0.03 | 22.0-24.0 | 12.0-15.0 | 0.75 | |
| TP310S/1.4845 | 0.08 | 1 | 0.045 | 0.03 | 24.0-26.0 | 19.0-22.0 | 0.75 |
Stainless steel tubes are widely used in heat exchangers due to their excellent thermal conductivity, corrosion resistance, and durability. Heat exchangers are critical components in industries such as chemical processing, oil and gas, power generation, HVAC, and refrigeration. Stainless steel tubes are particularly favored for their ability to withstand high temperatures, pressure, and corrosive environments.
- Chemical & Petrochemical Industry
- Oil & Gas Industry
- Power Generation
- Food & Beverage Industry
- HVAC & Refrigeration
- Pharmaceutical & Biotechnology
- Marine & Desalination
Production Sizes
| (mm) | (in) | (mm) | (in) | (mm) | (in) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 15.88 | 5/8" | 35 | 88.9 | 3 1/2" | ||||||||||
| 16 | 38.1 | 1 1/2" | 101.6 | |||||||||||
| 17 | 37 | 104 | ||||||||||||
| 18 | 40 | 108 | 4 1/4" | |||||||||||
| 19/19.05 | 3/4" | 42.4 | 114.3 | 4 1/2" | ||||||||||
| 20 | 44 | 120 | ||||||||||||
| 22 | 7/8" | 44.45 | 1 3/4" | 127 | 5" | |||||||||
| 24 | 45 | 129 | ||||||||||||
| 25 | 50.8 | 2" | 139.8 | 5 1/2" | ||||||||||
| 25.4 | 1" | 54 | 141 | |||||||||||
| 26.67 | 56 | 152.4 | 6" | |||||||||||
| 28 | 57/57.15 | 2 1/4" | 154 | |||||||||||
| 30 | 60.3 | 2 3/8" | 165 | 6 1/2" | ||||||||||
| 31.8 | 1 1/4" | 63.5 | 2 1/2" | 168 | ||||||||||
| 32 | 70 | 2 3/4" | ||||||||||||
| 33.7 | 76.2 | 3" |
Stainless Steel Mechanical Properties
| Grade | Tensile Strength | Yide Strength | Elogation | Hardnes | Solution Annealing | |
|---|---|---|---|---|---|---|
| kgf/mm2 (N/mm2) | kgf/mm2 (N/mm2) | % | HRB(HV) | ℃ | ||
| ASTM | TP304 | ≥53(515) | ≥21(205) | ≥35 | ≤90(200) | 1040-1150℃ Water Quenching |
| TP304L | ≥50(485) | ≥17(170) | ≥35 | ≤90(200) | ||
| TP316 | ≥53(515) | ≥21(205) | ≥35 | ≤90(200) | ||
| TP316L | ≥50(485) | ≥17(170) | ≥35 | ≤90(200) | ||
| EN | X5CrNi18-10\1.4301 | (500-700) | ≥20(195) | ≥40 | ≤90(200) | 1000-1100℃ Water Quenching |
| X2CrNI19-9\1.4307 | (470-670) | ≥18(180) | ≥40 | ≤90(200) | ||
| X5CrNo17-12-2\1.4401 | (510-710) | ≥21(205) | ≥40 | ≤90(200) | 1020-1120℃ Water Quenching | |
| X2CrNo17-12-2\1.4404 | (490~690) | ≥19(195) | ≥40 | ≤90(200) | ||
| JIS | SUS304 | ≥53(520) | ≥21(205) | ≥35 | ≤90(200) | 1010-1150℃ Water Quenching |
| SUS304L | ≥49(480) | ≥18(175) | ≥35 | ≤90(200) | ||
| SUS316 | ≥53(520) | ≥21(205) | ≥35 | ≤90(200) | ||
| SUS316L | ≥49(480) | ≥18(175) | ≥35 | ≤90(200) | ||
Tolerance of Heat Exchanger Tubers
| Standard | OD(mm) | Thickness | Length | |||
|---|---|---|---|---|---|---|
| ASTM A249 (A1016) | ＜25.4 | ±0.10 | ±10%S | OD<50.8 +3-0 OD≥50.8 +5-0 | ||
| ≥25.4~<38.1 | ±0.15 | |||||
| ≥38.1~<50.8 | ±0.20 | |||||
| ≥50.8-<63.5 | ±0.25 | |||||
| ≥63.5~<76.2 | ±0.31 | |||||
| ASTM A269 (A1016) | <38.1 | ±0.13 | OD<12.7±15% OD≥12.7±10% | OD<38.1+3.2-0 OD≥38.1+4.8-0 | ||
| ≥38.1~<88.9 | ±0.25 | |||||
| ≥88.9~<139.7 | ±0.38 | |||||
Heat Exchanger Stainless Steel Tube
Stainless steel tubes are widely used in heat exchangers due to their excellent thermal conductivity, corrosion resistance, and durability. Heat exchangers are critical components in industries such as chemical processing, oil and gas, power generation, HVAC, and refrigeration. Stainless steel tubes are particularly favored for their ability to withstand high temperatures, pressure, and corrosive environments.
1. Material Grades:
- 304 Stainless Steel: Commonly used for general-purpose heat exchangers.
- 316/316L Stainless Steel: Preferred for corrosive environments (e.g., seawater, chemicals) due to its molybdenum content.
- Duplex Stainless Steel: Used for high-strength and corrosion-resistant applications.
- 304L Stainless Steel: For highly corrosive environments, such as sulfuric acid or chloride exposure.
2. Types of Tubes:
- Seamless Tubes: Ideal for high-pressure and high-temperature applications.
- Welded Tubes: Cost-effective and suitable for low to medium-pressure systems.
- U-Tubes: Used in U-tube heat exchangers for thermal expansion flexibility.
- Straight Tubes: Commonly used in shell-and-tube heat exchangers.
3. Dimensions and Sizes:
- Outer Diameter (OD): Typically ranges from 1/4 inch to 2 inches.
- Wall Thickness: Varies based on pressure and temperature requirements (e.g., 0.5 mm to 3 mm).
- Length: Customizable, but standard lengths are 6 meters (20 feet).
4. Surface Finish:
- Smooth surfaces (e.g., Ra ≤ 0.8 µm) to minimize fouling and improve heat transfer efficiency.
- Electropolished or mechanically polished finishes for enhanced corrosion resistance.
5. Standards and Certifications:
- ASTM A213: Standard specification for seamless ferritic and austenitic alloy-steel boiler, superheater, and heat-exchanger tubes.
- ASTM A249: Standard for welded austenitic steel boiler, superheater, heat-exchanger, and condenser tubes.
- ASME SB-163: Specification for seamless nickel and nickel-alloy condenser and heat-exchanger tubes.
6. Advantages
- Corrosion Resistance: Performs well in harsh environments, including exposure to acids, alkalis, and chlorides.
- High Thermal Conductivity: Efficient heat transfer for improved performance.
- Durability: Resistant to scaling, pitting, and cracking under high temperatures and pressures.
- Low Maintenance: Long service life with minimal upkeep.
- Hygienic: Suitable for food, beverage, and pharmaceutical industries.
7. Applications
- Shell-and-Tube Heat Exchangers:
– Stainless steel tubes are used to transfer heat between two fluids (e.g., water, oil, or gas). - Plate Heat Exchangers:
– Stainless steel plates and tubes are used for compact and efficient heat transfer. - Condensers and Evaporators:
– Used in refrigeration, air conditioning, and power plants. - Oil and Gas Industry:
– For cooling and heating processes in refineries and petrochemical plants. - Food and Beverage Industry:
– For pasteurization, sterilization, and cooling processes. - Chemical Processing:
– Handling corrosive fluids and high-temperature reactions.
8. Selection Criteria for Heat Exchanger Tubes
- Operating Temperature and Pressure: Choose materials and wall thicknesses that can withstand the system’s conditions.
- Fluid Compatibility: Ensure the material is resistant to the fluids being processed.
- Thermal Efficiency: Optimize tube dimensions and surface finish for maximum heat transfer.
- Cost: Balance performance requirements with budget constraints.
- Standards Compliance: Ensure tubes meet industry standards (e.g., ASTM, ASME, DIN).
9. Maintenance Tips
- Regularly inspect for fouling, scaling, or corrosion.
- Clean tubes using chemical cleaning or mechanical methods (e.g., brushing).
- Monitor for leaks or pressure drops, which may indicate tube damage.
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