ASTM A199 Heat Exchanger Pipe Condenser Tubes Cold Drawn Alloy Steel Pipe
ASTM A199 / A199M is a standard specification for seamless cold-drawn intermediate alloy-steel tubes used in heat exchangers, condensers, and similar heat transfer apparatus. These tubes are manufactured from chromium-molybdenum and chromium-molybdenum-silicon alloy steels, offering excellent resistance to high temperatures and pressures.
ASTM A199 Heat-exchanger Tube is designed for service temperatures ranging from –100°C to +625°C (-150°F to 1150°F). They are widely used in oil refineries, petrochemical plants, power generation facilities, and gas condensers where reliable thermal conductivity and mechanical strength are critical.
The cold-drawn seamless manufacturing process ensures precise dimensional tolerances, a smooth surface finish, and uniform grain structure, making ASTM A199 tubes the preferred choice for demanding heat transfer applications
- Seamless cold-drawn construction
- Excellent high-temperature strength
- Good corrosion and oxidation resistance
- Precise dimensional accuracy
- Available in multiple alloy grades (T4, T5, T9, T11, T21, T22, T91)
| Parameter | Details |
|---|---|
| Standard | ASTM A199 / A199M |
| Product Type | Seamless Cold-Drawn Intermediate Alloy-Steel Tube |
| Application | Heat Exchangers, Condensers, Boilers, Superheaters |
| Outer Diameter | 3.2 – 76.2 mm (1/8″ – 3″) |
| Wall Thickness | 0.4 mm – 12.7 mm (0.015″ – 0.500″) |
| Length | 5.8m – 12m (custom lengths available up to 24m) |
| Grades | T4, T5, T9, T11, T21, T22, T91 |
| Delivery Condition | As-drawn, Annealed, Normalized, and Tempered |
| Surface Treatment | Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting |
Note: Mechanical property requirements do not apply to tubing smaller than 1/8 in. [3.2 mm] in inside diameter or 0.015 in. [0.4 mm] in wall thickness.
| Grade | C (%) | Mn (%) | P (max %) | S (max %) | Si (%) | Cr (%) | Mo (%) |
|---|---|---|---|---|---|---|---|
| T4 | 0.05–0.15 | 0.30–0.60 | 0.025 | 0.025 | 0.50–1.00 | 2.15–2.85 | 0.44–0.65 |
| T5 | ≤0.15 | 0.30–0.60 | 0.025 | 0.025 | ≤0.50 | 4.00–6.00 | 0.45–0.65 |
| T9 | ≤0.15 | 0.30–0.60 | 0.025 | 0.025 | 0.25–1.00 | 8.00–10.00 | 0.90–1.10 |
| T11 | 0.05–0.15 | 0.30–0.60 | 0.025 | 0.025 | 0.50–1.00 | 1.00–1.50 | 0.44–0.65 |
| T21 | 0.05–0.15 | 0.30–0.60 | 0.025 | 0.025 | ≤0.50 | 2.65–3.35 | 0.80–1.06 |
| T22 | 0.05–0.15 | 0.30–0.60 | 0.025 | 0.025 | 1.90–2.60 | 0.87–1.13 | 0.87–1.13 |
| T91 | 0.08–0.12 | 0.30–0.60 | 0.020 | 0.010 | 0.20–0.50 | 8.00–9.50 | 0.85–1.05 |
Sources:
Additional Elements (max): Ni ≤0.40, V 0.18–0.25 (T91), Cb 0.06–0.10 (T91), N 0.03–0.07 (T91), Al ≤0.04
ASTM A199 tubes are essential components in high-temperature, high-pressure heat transfer equipment across multiple industries:
| Industry | Applications |
|---|---|
| Oil Refineries | Heat exchangers, condensers, and reboilers |
| Petrochemical Plants | Process heaters, high-pressure fluid handling |
| Power Generation | Boilers, superheaters, reheaters, economizers |
| Gas Processing | Gas condensers, cryogenic heat exchangers |
| Chemical Industry | Corrosive fluid handling, thermal processing equipment |
| General Industrial | Heat recovery systems, pressure vessels |
- Working Pressure: Up to 9.8 MPa (depending on design)
- Temperature Range: -100°C to +625°C (-150°F to 1150°F)
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