A214 Carbon Steel Pipes for Heat Exchangers & Condensers: ERW Precision Tubing Solutions.
Resistance-Welded (ERW) Pipes (10–426mm OD, 1–100mm WT) with ±1% Diameter Tolerance.
Manufactured to ASTM A214, ASME SA214, and EN 10217-1 standards, our carbon steel pipes deliver 15–25% higher thermal conductivity than standard CS pipes, making them ideal for heat exchangers, condensers, and boiler systems. Available in 3–12m lengths (custom-cut) with Sch 5S to Sch XXS wall thicknesses, these ERW tubes ensure leak-proof performance in high-temperature steam/water applications.
Key Features:
- Pressure Rating: 2.5–30 MPa (362–4,350 psi)
- Surface Finish: Bare/black, pickled, 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 10217-1 |
Mechanical Properties
| Yield Strength | Tensile Strength | Elongation | Hardness | Max Service Temp |
|---|---|---|---|---|
| 205–275 MPa | 380–480 MPa | ≥35% | ≤72 HRB | 450°C (842°F) |
Material Composition & Process
Chemical Analysis (ASTM A214)
| Element | C ≤ | Mn ≤ | P ≤ | S ≤ | Si ≤ | Cu ≤ |
|---|---|---|---|---|---|---|
| Content | 0.18% | 0.90% | 0.035% | 0.035% | 0.10% | 0.20% |
Manufacturing Process:
- ERW Welding: High-frequency induction welding (HFIW) for uniform seams.
- Heat Treatment: Stress-relieved at 650–700°C (ASME Section II).
- Testing: Hydrostatic test at 1.5×MAOP (ASTM A450).
Applications & Performance
- Shell & Tube Heat Exchangers:
- 25mm OD, 2mm WT: Steam-water systems (ASME Section VIII).
- Power Plant Condensers:
- 19mm OD, 1.5mm WT: 25 MPa feedwater lines (HEI Standards).
- HVAC Systems:
- 38mm OD, 3mm WT: Chilled water distribution (ASHRAE 90.1).
Advantages vs. Competitors:
- Corrosion Resistance: 2x lifespan in pH 6–8 water vs. A179 tubes.
- Thermal Efficiency: 450 W/m·K conductivity (15% > AISI 1020).
Quality Assurance & Packaging
- Non-Destructive Testing:
- Eddy Current Test: ASTM E309 for weld integrity.
- Ultrasonic Test: ASTM A450 Class B.
- Surface Protection:
- VCI-coated ends + waterproof paper wrapping (ISO 4044).
- Export Packaging:
- Hexagonal steel-strapped bundles (max 3 tons).
Packing And Delivery
