ASTM A249 TP304L Stainless Steel Welded Tubes supplier
ASTM A249 TP304L is a standard specification for welded austenitic stainless steel boiler, superheater, heat exchanger, and condenser tubes made of 304L profile steel. It is a low-carbon version of 304 stainless steel, easier to weld, and less prone to post-weld sensitization, which is crucial for sanitary and pharmaceutical applications where cleanliness and integrity are paramount.
We supply ASTM A249 TP304L stainless steel welded tubes in a variety of sizes, with an outer diameter of 19.05 mm (0.75 inches) and a wall thickness of 1.25 mm (0.049 inches), commonly used sizes in heat exchangers, condensers, and other heating process systems. 304L stainless steel is a low-carbon version of 304. A249 304L welded tubes can be surface-treated under bright annealing conditions.
Applications
Heat Exchangers: Used to transfer heat in chemical, oil, and gas industries.
Boilers and Superheaters: Withstand high-pressure and high-temperature environments.
Pharmaceutical and Medical Equipment: Ensures hygienic operations due to its non-reactive surface.
Condensers: Used in power plants for cooling and condensation processes.
Specifications:
Type: Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes
Grades: TP304, TP304L, TP304H
Size: 1/8" NB to 5" NB, 1/4" OD to 5" OD sizes stainless steel seamless tubes also available
Length: Up to 6 meters, custom cut lengths
Thickness: 1mm to 13mm, SCH 5/5S, 10/10S, 20/20S, 40/40S, 80/80S, 120/120S, 160/160S as per ANSI B36.19/36.10
Finish: No.1 Pickled Finish, No.4 finish, BA Finish, Electropolished Pipes
Delivery Condition: Hot Finish, Cold Finish, Bright Annealed, Polished, Annealed and Pickled, Passivated, Stress Relived
Chemical Composition of TP304L
| Element | Percentage (%) |
|---|---|
| Carbon (C) | ≤ 0.03 |
| Chromium (Cr) | 18.0 – 20.0 |
| Nickel (Ni) | 8.0 – 12.0 |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.03 |
| Iron (Fe) | Balance |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 515 MPa (75 ksi) |
| Yield Strength (0.2%) | ≥ 205 MPa (30 ksi) |
| Elongation | ≥ 35% |
| Hardness (HRB) | ≤ 90 |
Comparison of ASTM A249 TP304L and TP304
TP304L has a lower carbon content (≤0.03%) than TP304 (≤0.08%), resulting in better corrosion resistance under weld conditions. TP304L exhibits stronger resistance to intergranular corrosion after welding, making it suitable for applications requiring welding or exposure to corrosive media. Due to its higher carbon content, TP304 has slightly higher tensile strength and yield strength than TP304L.
Testing and Inspection
GNEE provides manufacturer TCs (test certificates), raw material certificates, 100% radiographic testing reports, and third-party inspection reports conforming to EN 10204/3.1B standards. We also offer standard certificates such as EN 10204 3.1 and additional requirement certificates such as NACE MR 01075.
• EN 10204/3.1B
• Raw material certificates
• 100% radiographic testing reports
• Third-party inspection reports, etc.
Highest quality packaging and shipping
Packed with waterproof paper and steel straps, meeting standard export sea freight packaging requirements, suitable for various modes of transport, or customized according to customer requirements.
1. Surface polishing;
2. Strapping packaging;
3. Wooden crate packaging; wooden pallet packaging
4. Container or bulk packaging;
5. Customized according to customer requirements
Customer Visit
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