Products Description
ASTM A214: From Straight Tubes to U-Bent Solutions
ASTM A214 Tubes are carbon steel electric-resistance-welded (ERW) tubes designed for heat exchangers, condensers, and similar heat transfer equipment. These minimum-wall-thickness tubes provide a cost-effective and reliable solution for various industrial applications.We offer a complete product range to meet diverse application needs:
- Straight ERW ASTM A214 Tube: The versatile backbone for building efficient heat transfer systems and structural frameworks.
- U-Bend ASTM A214 Tube: The specialized solution for maximizing heat transfer efficiency in compact spaces, particularly in shell and tube heat exchangers.
ASTM A214 Straight ERW Tube
| Property | Specification |
|---|---|
| Standard | ASTM A214 / ASME SA214 |
| Material | Carbon Steel |
| Available O.D. | ≤ 76.2 mm (3 inches) |
| Manufacturing Process | Electric Resistance Welding (ERW). May be cold-drawn for enhanced precision and surface finish, followed by mandatory heat treatment. |
| Type | Straight Tube |
ASTM A214 ERW Tube & U-Bend Tube Chemical Composition & Mechanical Properties
Chemical Composition (%)
- Carbon (C): ≤ 0.18%
- Manganese (Mn): 0.27%–0.63%
- Phosphorus (P): ≤ 0.035%
- Sulfur (S): ≤ 0.035%
Mechanical Property
- Hardness: ≤ 72 HRBW
Advantages of Our ASTM A214 ERW Tubes
Uniform Wall Thickness
Ensures minimal pressure drop and stable flow rates for fluids or gases over extended runs.
High Pressure & Load Resistance
The robust ERW weld seam and carbon steel material withstand significant internal pressure and external loads.
Easy Installation
The straight form simplifies alignment, welding, and fixing, reducing labor time and cost.
Broad Applicability
Highly versatile—suitable for heat exchange, mechanical structures and material conveyance.
U-Bend ASTM A214 Tube
Our U-Bend ASTM A214 Tubes are precision-formed from straight ERW tubes to create compact, efficient heat transfer solutions for challenging space constraints.
U-Bend Tube Features:
- Advanced Cold Bending Process: Utilizing specialized equipment to create smooth, continuous bends without wrinkling or compromising tube integrity.
- Precise Geometrical Control: Accurate production of bend radius (R) and leg lengths (L) to match your specific design requirements.
- Post-Bending Heat Treatment: All U-bent tubes undergo stress-relieving heat treatment to eliminate internal stresses from cold working.
- Maximized Surface Area: The U-shaped configuration optimizes heat transfer surface area within limited spaces.
ASTM A214 U-Bend Tube Applications:
- Heat exchanger U-bend sections
- Boiler systems
- Condenser units
- Any application requiring compact heat transfer solutions
ASTM A214 ERW Tube & U-Bend Tube Quality
Full-Body Heat Treatment: Every A214 welded tube undergoes comprehensive heat treatment post-welding to eliminate residual stresses and ensure uniform mechanical properties.
Superior Weld Finish: The external weld bead is mechanically removed, and the internal bead is strictly controlled to ensure smooth fluid flow and installation ease.
Heat Exchanger Tube Standards Comparison
A214 vs. A179
ASTM A179
- Process: Cold-Drawn Seamless
- Carbon Content: 0.06% – 0.18%
- Cost Efficiency: Higher
ASTM A214
- Process: Electric Resistance Welded (ERW)
- Carbon Content: ≤ 0.18% (no lower limit)
- Cost Efficiency: More Economical
Summary: While both serve similar heat transfer applications, A214 ERW tubes offer significant cost advantages over seamless A179 tubes, making them ideal for budget-conscious projects without compromising performance.
A214 vs. SA178
ASTM A178
- Grades: Three grades (A, C, D)
- Size Range: Wider range
- Primary Application: Boiler Tubes
ASTM A214
- Grades: Single grade
- Size Range: Standard range (O.D. ≤ 76.2 mm)
- Primary Application: Heat Exchangers & Condensers
Summary: ASTM A214 ERW tubes are specifically engineered for heat exchanger and condenser service, while SA178 targets boiler applications.
ASTM A214 ERW Tube & U-Bend Tube Inspection & Testing
We ensure every batch meets the highest standards through rigorous testing:
- Flattening Test
- Flange Test
- Reverse Flattening Test
- Hardness Test
- Non-Destructive Testing (Eddy Current or Ultrasonic) – each tube is tested to ensure integrity
- Hydrostatic Test – available as per standard requirements