ASTM A179 Carbon Steel Pipes for Heat Exchangers & Condensers: High-Efficiency Seamless Tubing.
Cold-Drawn Seamless Pipes (10–426mm OD, 1–100mm WT) with ±1% Diameter Precision.
Manufactured to ASTM A179, ASME SA179, and EN 10216-2 standards, our carbon steel pipes deliver 20–25% higher thermal conductivity than standard CS pipes, ideal for heat exchangers, condensers, and boiler systems. Available in 3–12m lengths (custom-cut) with Sch 5S to Sch 160 wall thicknesses, these tubes ensure leak-proof performance in steam, water, and thermal oil applications.
Key Features:
- Pressure Rating: 2.5–25 MPa (360–3,625 psi)
- Surface Finish: Pickled, bare, or polished (Ra ≤3.2µm)
- Certifications: PED 2014/68/EU, TUV, ISO 9001:2015
Technical Specifications
Dimensional Tolerances
| Parameter | Tolerance | Standard |
|---|---|---|
| Outer Diameter | ±1% | ASTM A450 |
| Wall Thickness | ±10%/-5% | ASME B36.10M |
| Straightness | ≤1.5mm/m | EN 10216-2 |
Mechanical Properties
| Yield Strength | Tensile Strength | Elongation | Hardness | Max Service Temp |
|---|---|---|---|---|
| 180–240 MPa | 325–450 MPa | ≥35% | ≤72 HRB | 400°C (752°F) |
Material Composition & Manufacturing
Chemical Analysis (ASTM A179)
| Element | C | Mn | P ≤ | S ≤ | Si ≤ |
|---|---|---|---|---|---|
| Content | 0.06–0.18% | 0.27–0.63% | 0.035% | 0.035% | 0.10% |
Production Process:
- Cold Drawing: Precision sizing for smooth inner surfaces (Ra ≤1.6µm).
- Heat Treatment: Annealed at 650–700°C to relieve stress (ASME Sec II).
- Testing: Hydrostatic test at 1.5×MAOP (ASTM A450).
Applications & Performance
- Shell & Tube Heat Exchangers:
- 19mm OD, 1.5mm WT: Condenser tubes (ASME Section VIII, TEMA Class C).
- Power Plant Feedwater Systems:
- 25mm OD, 2.5mm WT: 15 MPa steam lines (HEI Standards).
- HVAC Evaporators:
- 16mm OD, 1.2mm WT: Refrigerant circulation (ASHRAE 15 compliant).
Advantages vs. Competitors:
- Corrosion Resistance: 3x lifespan in pH 6–9 fluids vs. A214 tubes.
- Thermal Conductivity: 50 W/m·K (20% > AISI 1010 steel).
Quality Assurance & Packaging
- Non-Destructive Testing:
- Eddy Current Test: ASTM E309 for seamless integrity.
- Ultrasonic Test: ASTM A450 Class B.
- Surface Protection:
- VCI-coated ends + waterproof paper wrapping (ISO 4044).
- Export Packaging:
- Hexagonal steel-strapped bundles (max 2.5 tons).
Packing And Delivery
