Customization Service OEM/ODM  ·  Custom Design  ·  Factory Direct Supply Get A Quote ›


14 YearsWith over 14 years of specialized experience in the heat exchange industry.
OEM & ODM capabilitieswe manufacture to your drawings and also provide customized design and production based on your specific operating conditions.
Complete In-House Production ChainCore processes including fin blanking, copper tube processing, sheet metal fabrication, tube expansion, welding, and leak detection are all completed internally, eliminating outsourcing risks and ensuring consistent batch quality.
Flexible CustomizationSupport for custom fin types, tube diameters, and plate structures, and connection methods, with build-to-print and build-to-sample services for stable batch supply.

STRICT
QUALITY
INSPECTION

Skilled Technicians & Engineers
with over a decade of experience ensure precision.

About Hengling
  • Own factory based in Dongguan, Guangdong Province, established in 2012
  • Factory covering nearly 10,000 square meters
  • 120+ employees, with a QC team of 10+ and an R&D team of 15+
  • Annual sales around RMB 150 million, daily production capacity around 500 pcs
  • Main products: Dry Cooler, Tube Finned Heat Exchanger, Evaporator Coil, Condensing Coil, Unit Air Coolers, Cooling Coil, Sheet Metal Enclosure
More >

Our Main Products

Our Industry Solutions

One-stop comprehensive solution provider

  • Data Center
  • Energy storage / Wind power / Hydrogen energy
  • HVAC
  • Construction machinery /New energy vehicles

Quality Inspection Process

From incoming check to final pressure test

Visual and Dimensional InspectionSTEP 01 · APPEARANCE

  • Check fins for bent, folded, or damaged areas
  • Check sheet metal for scratches or deformation
  • Check copper tube ends for damage
  • Check inside of tubes for cleanliness and dryness
  • Measure flange dimensions with calipers
  • Measure fin pitch (11-fin / 21-fin stack method)
  • Measure single-frame height

Sealing TestSTEP 02 · LEAK DETECTION

  • Water Immersion Test
  • Charge with 3.5 MPa nitrogen
  • Immerse in water and observe for bubbles

Pressure / Hydrostatic TestSTEP 03 · STRENGTH

  • Test at 1.5 times design pressure
  • Hydrostatic or pneumatic test
  • Hold pressure for 30 minutes
  • Check for deformation or leakage

Workshop Equipment

High-speed Press

High-speed press

Laser tube cutting machine

Laser tube cutting machine

Laser cutting machine

Laser cutting machine

Vertical tube expander

Vertical tube expander

Tube bending machine

Tube bending machine

Press brake

Press brake

>

Production Process

Sheet metal Processing

Sheet metal Processing

Fin Processing

Fin Processing

Tube Processing

Tube Processing

Assembly

Assembly

Tube Expansion

Tube Expansion

Welding

Welding

Sealing Test

Sealing Test

Degreasing

Degreasing

Final Assembly

Final Assembly

Pressure  Hydrostatic Test

Pressure Hydrostatic Test

Appearance Cleaning

Appearance Cleaning

Packaging

Packaging

Contact Us

Service creates value, existence shapes the future.

  

Top