DELLOK 32mm Helical Fin Tube 3.3mm Serrated for Boiler Coolers | SA213-TP304H Stainless Steel
Price:
N/A
MOQ:
N/A
Delivery Time:
Ex-work within 1 month on recepit of order.
Brand:
DELLOK
Product Description
Product Overview
DELLOK Boiler Cooler 3.3mm Serrated Solid 32mm Helical Fin Tube is a high-frequency resistance welded heat exchanger component designed for efficient waste heat recovery from boiler flue gas. Manufactured from SA213-TP304H stainless steel with NPS 2'' X SCH80S specifications, this serrated helical fin tube delivers superior thermal performance in demanding industrial applications.
Key Specifications
Tube Dimensions
OD: 32mm
Length: Up to 18,000mm
Wall Thickness: SCH80S
Length: Up to 18,000mm
Wall Thickness: SCH80S
Fin Configuration
Type: Serrated Helical
Fin Height: 32mm
Fin Thickness: 0.8mm minimum
Fin Pitch: 3.3mm (303 FPM)
Fin Height: 32mm
Fin Thickness: 0.8mm minimum
Fin Pitch: 3.3mm (303 FPM)
Materials
Tube: SA213-TP304H Stainless Steel
Fin: Carbon Steel or Stainless Steel
Fin: Carbon Steel or Stainless Steel
Manufacturing Process
The fin strip is continuously welded and spirally wound onto a polished bare tube using high-frequency resistance welding technology. This process ensures strong mechanical bonding between the tube and fins for optimal heat transfer efficiency.
Quality Assurance
- Hydrostatic or pneumatic pressure testing
- Tensile tests to verify mechanical bonding
- Visual inspection for weld integrity and surface quality
- Dimensional verification of fin height, spacing, and geometry
- Bending checks for ovality and thickness consistency
- Compliance with international standards and client specifications
Technical Parameters
| Parameter | Solid Fins | Serrated Fins |
|---|---|---|
| Tube OD Range | 19-219mm | 19-219mm |
| Fin Height Range | 8-26mm | 8-32mm |
| Fin Thickness Range | 0.8-2.8mm | 1.0-1.6mm |
| Fin Density Range | 4-20mm (250 FPM) | 3.3-20mm (303 FPM) |
| Maximum Length | 18,000mm | 18,000mm |
Applications
High-frequency resistance welded helical fin tubes are extensively used in fired heaters, heat exchangers, boilers, economizers, pre-heaters, coolers, heat pipes, and various industrial heating systems for efficient thermal management.
Additional Features
- Tube swaging process for joint connections
- Spacer rings available in steel materials
- Combination tubes with both solid plain and serrated fins
- Protective coating: Red oxide zinc phosphate primer externally, volatile corrosion inhibitor internally
- Fin end finish: 30-35 degree bevel
Production Images
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Dellok Yonghui Radiating Pipe Manufacturing Co.,Ltd.
Location
No.18 Tianyue Road,Yanzhou,Jiangsu China
Contact Person
Peter Cheng