ERW Boiler Tubes
An ERW Boiler Tube (Electric Resistance Welded Boiler Tube) is a carbon steel tube manufactured through high-frequency ERW welding and designed to withstand high pressure, high temperature, and continuous thermal cycling. These tubes are specially engineered for boilers, heat exchangers, pressure vessels, steam lines, and power plant applications, where strength and thermal resistance are critical. With excellent mechanical properties, uniform weld strength, and consistent dimensions, ERW Boiler Tubes are widely used in industrial heating systems, energy plants, chemical industries, and mechanical engineering applications.
About Our ERW Boiler Tubes
ERW Boiler Tubes are high-quality steel tubes manufactured using the Electric Resistance Welding (ERW) process. These tubes are specially designed for high-temperature and high-pressure boiler applications, making them suitable for steam boilers, power plants, heat exchangers, economizers, and industrial heating systems. As trusted traders and stockists, we supply a wide range of ERW Boiler Tubes with reliable quality, excellent dimensional accuracy, and performance suited for demanding thermal environments.
Key Features
- •Desgined for high temperature and pressure applications
- •Excellent weld seam strength due to high frequency ERW welding
- •Smooth internal Surface for effiecent steam and heat flow
- •Accurate and consitent dimensional tolreances
- •Durable and long- Lasting performance in industrial environment
Applications
- •Boiler applications
- •Heat exchangers
- •Power plants
- •Industrial heating
- •Sugar mills and Chemical plant boiler
Size & Thickness Range
| diameter | thickness | use |
|---|---|---|
| 1/2” (12.7mm OD) to 2” (60.3mm OD) | 1.2mm – 4.0mm | Small boilers, coil-type boilers, heat exchangers |
| 2” (60.3mm OD) to 6” (168.28mm OD) | 2.0mm – 8.0mm | Industrial boilers, pressure pipes, steam lines |
| 6” (168.28mm OD) to 12” (323.90mm OD) | 3.0mm – 12.0mm | Power plant boilers, economizers, superheaters |
| 14” (355.60mm OD) to 20” (508mm OD) | 4.0mm – 14.0mm | High-pressure heaters, thermal fluid systems, heavy industrial boilers |
Manufacturing Process
The manufacturing of ERW Boiler Tubes begins with carbon steel strips being precision-shaped into a cylindrical form and fused using high-frequency ERW welding, which ensures a strong and uniform weld seam. To enhance their mechanical properties and relieve internal stresses, the tubes may subsequently undergo a normalizing or heat treatment process. Following this, rigorous surface preparation through cleaning, descaling, and treatment removes all impurities to ensure a pristine condition. The integrity of the critical weld seam is then verified through Non-Destructive Testing (NDT) methods such as Eddy Current or Ultrasonic Testing. The tubes are precisely sized and straightened to achieve accurate outer diameter, thickness, and strict dimensional tolerances required for boiler applications. Finally, each tube undergoes a comprehensive hydrotest and final inspection to validate its performance under internal pressure, weld quality, and overall structural integrity. This meticulous, multi-stage process guarantees that every tube meets all necessary parameters for reliable performance in high-pressure environments as premium ERW Boiler Tubes..
ERW Boiler Tube vs Seamless Boiler Tube
| Aspect | ERW Boiler Tube | Seamless Boiler Tube |
|---|---|---|
| Manufacturing | Welded | No weld |
| Strength | Very srong for up to medium | Superior for extream pressure |
| Cost | Economical | Expensive |
| Surface Finish | Smooth internal finish | 5-15 years |
| Best use | Heat exchangers, Industrial Boilers | Ultra high pressure boilers |
Quality Tests Performed
- Zink Coating Thikness Test
- Hydrostatic Pressure Test
- Eddy Current/Ultraslonic Inspection
- Weld Seam Integrity Test
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