Stainless Steel Heat Exchanger Tube (Boiler Tube) ASTM A249 / A213 | Factory Price
Stainless Steel Heat Exchanger & Boiler Tubes (ASTM A213 / ASTM A249)
- High-Heat Alloys: TP304L, TP316L (Low Carbon) and specialized high-temp TP310S
- Strict Specifications: ASTM A213 (Seamless) and ASTM A249 (Welded with internal bead removed)
- Maximum Safety: Fully Solution Annealed with 100% Eddy Current & Hydrostatic NDT Testing
- Traceability: Mill Test Certificate (MTC) and comprehensive Material Test Report (MTR)
Withstands extreme pressures. Highly ductile, ideal for on-site custom U-bending or tube-sheet expansion without cracking.
Industrial Material
High-Performance Stainless Steel Tubes for Heat Exchangers, Condensers, & Boilers
As professionals working with steam systems, industrial boilers, or heat exchangers, we strictly emphasize: "Never use decorative or general-purpose stainless steel tubes (ASTM A554) in pressure systems." A554 tubes are engineered solely for furniture and architectural trims; they do not undergo solution annealing or hydrostatic pressure testing. Under high thermal loads and pressure, general-purpose tubes will crack, leak, or fail catastrophically.
Stainless Steel Heat Exchanger & Boiler Tubes (ASTM A213 / ASTM A249) supplied by Trinity Dynamic are manufactured under the most rigorous metallurgical standards to guarantee absolute safety and peak thermal efficiency:
- Solution Annealed to Ensure Ductility: Every tube is heat-treated to relieve all internal residual stresses. This guarantees high material ductility, allowing you to perform precise U-bending (U-Tubes) or expand the tubes into the tube-sheet without any risk of cracking or premature stress corrosion.
- 100% Non-Destructive Testing (NDT): Every tube undergoes 100% Eddy Current testing and Hydrostatic pressure testing at the mill. This guarantees zero micro-cracks, pinholes, or sub-surface weld defects that are invisible to the naked eye.
- Extremely Tight Tolerances: Strict control over outside diameter (OD) and wall thickness according to international standards, ensuring a perfect fit and seal with your boiler shell or condenser sheet.
Technical Specifications
Standards: ASTM A213 (Seamless), ASTM A249 (Welded with internal weld bead removed to ensure a completely smooth inner diameter)
Available Grades: TP304, TP304L, TP316, TP316L, and TP310S (High-Temperature resistant up to 1,100°C)
Sizing Method: Measured by exact Outside Diameter (OD) in inches/mm x Wall Thickness in mm or Birmingham Wire Gauge (BWG).
Standard Stock Sizes: Welded Austenitic Stainless Steel Tubes
| Thickness (mm) | Outside Diameter | 1/2" | 5/8" | 3/4" | 7/8" | 1" | 1 1/4" | - | 1 1/2" | 2" | 2 1/2" | 3" | 3 1/2" | 4" | 4 1/2" |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | 12.7 | 15.9 | 19.0 | 22.2 | 25.4 | 31.8 | 35.0 | 38.1 | 50.8 | 63.5 | 76.2 | 88.9 | 101.6 | 114.3 | |
| 1.20 | • | • | • | • | • | • | • | • | • | • | - | - | - | - | |
| 1.25 | • | • | • | • | • | • | • | • | • | • | - | - | - | - | |
| 1.50 | • | • | • | • | • | • | • | • | • | • | • | • | • | - | |
| 1.60 | • | • | • | • | • | • | • | • | • | • | • | • | • | - | |
| 1.65 | • | • | • | • | • | • | • | • | • | • | • | • | • | - | |
| 2.00 | • | • | • | • | • | • | • | • | • | • | • | • | • | • | |
| 2.11 | • | • | • | • | • | • | • | • | • | • | • | • | • | • | |
• = Standard Stock sizes ready for immediate delivery | - = Custom sizing available. Please consult our sales team for production lead times.
Tolerance Standards Chart
We enforce strict dimensional tolerances to ensure that our tubes slide perfectly into your tube sheets, preventing loose fits or excessive friction.
| Standard/Item | Outside Diameter (OD) Tolerance | Thickness Tolerance | Length Tolerance | |
|---|---|---|---|---|
| ASTM A249 | < 25 mm : ± 0.10 mm | 50 - 65 mm : ± 0.25 mm | ± 10% |
OD < 50.8 mm : + 3.0 / - 0 mm OD ≥ 50.8 mm : + 5.0 / - 0 mm |
| 25 - 40 mm : ± 0.15 mm | 65 - 75 mm : ± 0.30 mm | |||
| 40 - 50 mm : ± 0.20 mm | 75 - 100 mm : ± 0.38 mm | |||
| 100 - 200 mm : + 0.38 / - 0.64 mm | ||||
| ASTM A269 | < 38.1 mm : ± 0.13 mm | 88.9 - 139.7 mm : ± 0.38 mm |
OD < 12.7 mm : ± 15% OD ≥ 12.7 mm : ± 10% |
OD < 38.1 mm : + 3.2 / - 0 mm OD ≥ 38.1 mm : + 4.8 / - 0 mm |
| 38.1 - 88.9 mm : ± 0.25 mm | 139.7 - 203.2 mm : ± 0.76 mm | |||
| ASTM A270 | ≤ 25 mm : ± 0.13 mm | 50 - 75 mm : ± 0.25 mm | ± 12.5% |
OD ≤ 100 mm : + 3.0 / - 0 mm OD > 100 mm : + 5.0 / - 0 mm |
| 25 - 50 mm : ± 0.20 mm | 75 - 100 mm : ± 0.38 mm | |||
| JIS G3447 | ≤ 38.1 mm : ± 0.19 mm / > 38.1 : ± 0.25 mm | ± 10% | + 10 mm / - 0 mm | |
| JIS G3463 | < 60 mm : ± 0.25 mm / ≥ 60 : ± 0.30 mm |
t < 2mm : + 0.4 mm t ≥ 2mm : ± 20% |
OD ≤ 50 : + 7 mm OD > 50 : + 10 mm |
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