ASTM A213 TP304L Stainless Steel Boiler Tube
Material Grade:TP304L
Equivalent Grade:EN 1.4307 / X2CrNi18-9 / SUS304L
Manufacturing Process:Seamless Cold Drawn / Cold Rolled
Supply Condition:Solution Annealed & Heat Treated Condition
Outer Diameter (OD):6.0 mm – 127 mm (Custom sizes available)
Wall Thickness:0.5 mm – 12.7 mm
Length:3000 mm / 6000 mm / Customized Length
Surface Finish:Pickled, Bright Annealed (BA), Polished
Certification:EN 10204 3.1 MTC, PMI Report, Mechanical Test Report
ASTM A213 TP304L Stainless Steel Boiler Tube supplier
ASTM A213 TP304L Stainless Steel Boiler Tube is a low-carbon austenitic stainless steel tube applied in boilers, heat exchangers, condensers, and high-temperature heat transfer equipment. Compared with standard 304 stainless steel, TP304L has a lower carbon content (C≤0.030%), which effectively reduces the risk of intergranular corrosion caused by chromium carbide precipitation during welding and high-temperature operation. It is especially suitable for pressure equipment requiring long-term stable operation at elevated temperatures. Compared with TP316L, 304L provides better cost efficiency in mildly corrosive environments, high-temperature steam systems, and cost-sensitive heat exchanger applications.
The ASTM A213 TP304L stainless steel tubes we supply have a carbon content of ≤0.03%, allowing welded components to avoid intergranular corrosion without additional post-weld heat treatment. This material is suitable for complex welded boiler structures, with a continuous service temperature up to 538°C and short-term peak temperature resistance up to 700°C.
ASTM A213 TP304L stainless steel heat exchanger tubes provide a pressure resistance capability of up to 10 MPa, meeting the requirements of high-pressure steam systems in power plant boilers. The surface roughness is controlled at Ra≤0.8 μm, helping reduce scale adhesion and improve heat transfer efficiency. These tubes can resist corrosion from boiler water impurities (such as Cl⁻ and SO₄²⁻) and high-temperature steam environments. They have passed the ASTM A262 intergranular corrosion test, and after surface pickling and passivation treatment, together with more than 1000 hours of salt spray testing, they provide extended service life for boiler systems.
If you are sourcing or working with these tubes, let me know:
• What outer diameter and wall thickness (or schedule) do you need?
• Are you looking for seamless or welded execution?
• What is the operating temperature and pressure of your system?
ASTM A213 TP304L Stainless steel condenser tubes Specification
Chemical Composition (wt%)
| Element | C | Mn | P | S | Si | Cr | Ni | Mo | N |
| Max / Range | 0.035 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0 – 20.0 | 8.0 – 13.0 | – | – |
Mechanical Properties (Solution Annealed)
| Property | ASTM A213 Requirement |
| Tensile Strength (Rm) | ≥ 485 MPa (70 ksi) |
| Yield Strength (Rp0.2) | ≥ 170 MPa (25 ksi) |
| Elongation (in 2 in. / 50 mm) | ≥ 35% |
| Hardness (HBW) | ≤ 192 |
| Hardness (HV) | ≤ 200 |
| Hardness (HRB) | ≤ 90 |
ASTM A213 Tube Dimensions & Tolerances
| Parameter | Range |
| Inside Diameter (ID) | 3.2 mm (⅛") and up |
| Outside Diameter (OD) | 6.35 – 127 mm (¼" – 5") |
| Wall Thickness | 0.4 – 12.7 mm (0.015" – 0.500") |
| Length | Single random / Double random / Cut length (max ~25,000 mm) |
| Process | Seamless (hot-finished or cold-finished / cold-drawn) |
Permissible Variations in OD
| OD Range (mm) | OD Tolerance (mm) |
| ≤ 25.4 | ± 0.10 |
| 25.4 – 38.1 | ± 0.15 |
| 38.1 – 50.8 | ± 0.20 |
| 50.8 – 63.5 | ± 0.25 |
| 63.5 – 76.2 | ± 0.30 |
| 76.2 – 101.6 | ± 0.38 |
Wall Thickness Tolerance
| Condition | Tolerance |
| OD ≤ 50.8 mm | −10% (no positive) |
| OD > 50.8 mm, WT > 5.6 mm | ±10% of average wall |
Length Tolerance
| OD (mm) | Length Tolerance |
| < 50.8 | +3 mm, 0 |
| ≥ 50.8 | +5 mm, 0 |
ASTM A213 Boiler / Heat-Exchanger Tube Sizes
| OD (mm) | OD (in) | WT (mm) | WT (in) | Typical Application |
| 12.70 | ½" | 1.65 | 0.065" | Condenser tubes |
| 15.88 | ⅝" | 1.65 | 0.065" | Condenser tubes |
| 19.05 | ¾" | 1.65 | 0.065" | Condenser / cooler tubes |
| 19.05 | ¾" | 2.11 | 0.083" | Superheater tubes |
| 25.40 | 1" | 2.11 | 0.083" | Evaporator tubes |
| 25.40 | 1" | 2.77 | 0.109" | Superheater tubes |
| 31.75 | 1¼" | 2.77 | 0.109" | Economizer tubes |
| 38.10 | 1½" | 3.40 | 0.134" | Evaporator / superheater |
| 44.45 | 1⅜" | 3.40 | 0.134" | Superheater tubes |
| 50.80 | 2" | 3.40 | 0.134" | Steam drums / headers |
| 60.33 | 2⅜" | 4.19 | 0.165" | Superheater tubes |
| 76.20 | 3" | 4.19 | 0.165" | Economizer / boiler |
| 88.90 | 3½" | 4.19 | 0.165" | Large-diameter boiler |
| 101.60 | 4" | 5.56 | 0.219" | Steam / condensate lines |
| 114.30 | 4½" | 5.56 | 0.219" | Utility piping |
| 127.00 | 5" | 5.56 | 0.219" | Steam headers |
Note:
Manufactured using a seamless process (hot rolling followed by cold drawing) to ensure a weld-free tube body;
Cold-drawn (CD) tubes feature tighter dimensional tolerances (OD tolerance ±0.10 mm) and a smoother surface finish, making them the preferred choice for condenser and precision heat exchanger applications.
Surface condition: As-finished (bright) or passivated; typically, no additional surface treatment is required for boiler operating conditions.
Typical applications: Power plant boilers, superheaters, economizers, condensers, and heat exchangers, as well as sectors such as food and pharmaceutical processing, pulp and paper, and chemical processing (non-chloride environments).
Lead Time:
Standard specifications (OD 12.7–50.8 mm, WT 1.65–3.40 mm): 7–15 days for stock items; non-standard/custom orders (special wall thickness, length, or EP treatment): 30–45 days; large-volume orders (≥50 tons): 45–60 days. Orders are tracked via ERP throughout the process, with weekly production progress reports provided; third-party inspections (SGS, BV, CCIC) are supported.
Quality Inspection
ASTM A213 TP304L stainless steel boiler tubes undergo rigorous quality inspections prior to shipment, including chemical composition analysis, tensile testing, hardness testing, hydrostatic testing, eddy current testing, and dimensional checks. Each tube undergoes 100% non-destructive testing to ensure that outer diameter and wall thickness tolerances comply with ASTM A213 standards; additionally, an EN 10204 3.1 material certificate is provided to guarantee heat number traceability.
Export Packaging:
Pipe ends are sealed with plastic caps to prevent contamination, and the pipe bodies are wrapped in moisture-proof PE film. Bundles (≤2 tons) are securely strapped and supported by wooden pallets or steel racks. The exterior is protected by galvanized sheet metal or woven bags. For sea shipments, VCI anti-rust paper is included. Container conditions are maintained at ≤40°C and ≤65% RH to ensure zero rust or damage upon arrival.
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