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The Quang Ha Guarantee
Over 3 Decades of Experience
Since 1990, Quang Ha has established a leading position, providing the foundation for GLOBIN's quality.
Partner of
Global Brands
As the official distributor for major names like K-Flex, Honeywell, and Danfoss, we have a deep understanding of international quality standards.
Proven
Capability
Trusted by hundreds of landmark projects, our capability and reputation are embedded in every GLOBIN product.
Explore the GLOBIN Product Lines
GKB-1 - One Layer Non-insulated Aluminium Flexible Duct

Product Code: GKB-1 

GKB-1 is a multiply aluminium polyester laminated ducting with an en-capsulated high tensile steel wire helix.

Application: GKB-1 has been specially designed for the HVAC market.

Advantages:
  • Supplied in standard 8 metre length, compressed to 1-1.2 metre.
  • Individually boxed.
  • Low costs on transport and logistic.
  • Easy to install over either round or oval ducting.
  • No special tools required for cutting or fixing.
  • In case of a fire no toxic gases are emitted.
Technical Specification:
Standard
result
Fire Resistance
ASTM D635; UL 94
Tensile strength
22Mn/cm2 – ASTM D774
Duct Material
Aluminum/Polyester
Standard Length
08 m
Compressed Length
0.4m/0.6m
Diameter Range
D76 mm - D500 mm
Temperature Range
-30°C- +150°C
Maximum Air Velocity
30m/ Sec(5906ft/min)
Max. Positive
Working Pressure
2500 pa
Packing
Individual Carton / Plastic bag
GKB-2 - Two Layers Non-insulated Aluminium Flexible Duct

Product Code: GKB-2 

GKB-2 is a non-insulated aluminum flexible duct manufactured from 02 aluminum + polyester layers (ALU+PET) of 0.023 mm thick with an en-capsulated high tensile steel wire helix.

Application: GKB-2 has been specially designed for the HVAC market.

Advantages:
  • Supplied in standard 8 metre length, compressed to 1-1.2 metre.
  • Individually boxed.
  • Low costs on transport and logistic.
  • Easy to install over either round or oval ducting.
  • No special tools required for cutting or fixing.
  • In case of a fire no toxic gases are emitted.
Technical Specification:
Standard
result
Fire Resistance
ASTM D635; UL 94
Tensile strength
22Mn/cm2 – ASTM D774
Duct Material
Aluminum/Polyester
Standard Length
08 m
Compressed Length
0.4m/0.6m
Diameter Range
D76 mm - D500 mm
Temperature Range
-30°C- +150°C
Maximum Air Velocity
30m/ Sec(5906ft/min)
Max. Positive
Working Pressure
2500 pa
Packing
Individual Carton / Plastic bag
GCTT - Fibreglass Aluminium Flexible Duct

Product Code: GCTT 

GCTT is closed tube structure, resilient, easy to bend and stretch. The tube is manu- factured from layer of glass fiber reinforced aluminum with flame retardant to enhance insulation and fire resistance, heat resistance up to 200°C.

Application: GCTT has been specially designed for the HVAC market.

Advantages:
  • Supplied in standard 8 metre length, compressed to 0,4-0,6metre.
  • Individually boxed.
  • Low costs on transport and logistic.
  • No special tools required for cutting or fixing.
  • The products have been tested on fire resistance
Technical Specification:
Standard
result
Fire Resistance
Class 1 (BS 476 part 7)
Tensile strength
22Mn/cm2 – ASTM D774
Duct Material
Aluminum/Polyester/Fiber glass
Standard Length
08 m
Compressed Length
0.4m/0.6m
Diameter Range
D76 mm - D500 mm
Temperature Range
-30°C- +150°C
Maximum Air Velocity
30m/ Sec(5906ft/min)
Max. Positive
Working Pressure
2500 pa
Packing
Individual Carton / Plastic bag
GCBT- Fibreglass Insulated Aluminium Flexible Duct

Product Code: GCBT

GCBT consists of one of the GKB-1 weight innerducts, 25 mm thick fibreglass insulation- weight 16 / 24 / 32 kg/m3 and is covered with either a vapour barrier outerjacket or one of the (Alum + Scrim + PET) ducts. GCBT has been developed to minimise the heat gain or loss resulting from the temperature difference between the air flowing in a duct and the surrounding air. The vapour barrier prevents condensation forming on the outside of ducts carrying air at lower temperatures than the surrounding air.

Application:GCBT has been specially designed for the HVAC market.

Advantages:
  • Supplied in standard 8 metre length, compressed to 1-1.2 metre. Diameter available from 3" ~48" ( 076mm ~ 1200mm).
  • Individually boxed.
  • Low costs on transport and logistic.
  • Easy to install over either round or oval ducting.
  • No special tools required for cutting or fixing.
  • In case of a fire no toxic gases are emitted.
  • The products have been tested on fire resistance.
Technical Specification:
Standard
result
Standard Fiberglass Color
Yellow
Fiberglass Density
16 / 24 / 32 kg/m3
Fiberglass Thickness
25mm
Standard Length
08 m
Compressed Length
1m/1.2m
Diameter Range
82mm/560mm
Temperature Range
-30 / +140
Maximum Air Velocity
30m/ Sec(5906ft/min)
Max. Positive
Working Pressure
2500 pa
Packing
Individual Carton / Plastic bag
GAFS - Semirigid Flexible Duct

Product Code: GAFS

Alu 1-layer: Spirally produced ducting of one layer of Aluminium Foil.

Application: Semirigid Flexible Duct is a bendable flexible ducting in aluminium. The GAFS products are being used for the HVAC market as well as for various industrial pur- poses.

Technical Specification:
Standard
result
Thickness of Aluminium
0.08mm
Standard Length
03 m
Compressed Length
01 m
Diameter Range
50 mm - 315 mm
Temperature Range
-30°C- +250°C
Maximum Air Velocity
25m/ Sec(5906ft/min)
Max. Positive
Working Pressure
2500 pa
Packing
Individual Carton / Plastic bag
GCBOPL - PolyesterInsulated Aluminium Flexible Duct

Product Code: GCBOPL

GCBOPL is an insulated aluminumflexible duct manufactured from 02 aluminum with an en-capsulated high tensile steel wire helix,so it is elastic and flexible. The middle insulation layer is made of non-toxic polyester, the outside is coated with reinforced glass cloth that is not destroyed in normal conditions.

Application: GCBOPL has been specially designed for the HVAC market.

Technical Specification:
Standard
result
Thickness of Aluminium
0,02 – 0,03mm
Standard Length
08 m
Compressed Length
1m/1.2m
Diameter Range
82mm/560mm
Temperature Range
-30°C- +150°C
Maximum Air Velocity
30m/ Sec(5906ft/min)
Max. Positive
Working Pressure
2500 pa
Packing
Individual Carton / Plastic bag
GCBOKV - Insulated Aluminium Flexible Duct

Product Code: GCBOKV

GCBOKV is an insulated flexible ductwith a copper coated and anti-virus layer that helps the air to be led through the pipe, always cleaned, never virus in the tube. In addition, the GCBOKV wind tunnel has an insulating cotton layer made from an absolutely safe, health-resistant cotton layer during construction and product users. This product meets the strict requirements of clean rooms and air condition- ing systems for intensive rooms in the health sector.

Application: GCBOKV has been specially designed for the HVAC market.

Technical Specification:
Standard
result
Thickness of Aluminium
0,02 – 0,03mm
Standard Length
08 m
Compressed Length
1m/1.2m
Diameter Range
82mm/560mm
Temperature Range
-30°C- +150°C
Maximum Air Velocity
30m/ Sec(5906ft/min)
Max. Positive
Working Pressure
2500 pa
Packing
Individual Carton / Plastic bag
Polyester Fire-resistant Fabric Duct Connector

Product Code: NM1 

Flexible duct connector is formed through fold repression by using fire-resistant fabric and punching sheet. With this technics,the gas tightness is good, the punching sheet is easy to be shaped, and the instalaation is convenient.

Product Commonly used specification::
Standard
result
Steel
Galvanized, 0.4 mm thick
Fabric
Fire-resistant polyester coated PVC
Color 
Black
Temperature Range
-30 Deg.C~ +120Deg.C 
Tensile Strength (N) 
3000 x 2090
Anti-rips intensity
288.5 x 246.6
Length per Roll
25m, 30m, 45 m, 50 m
Glass fiber Fabric Duct Connector

Product Code: NM2 

Flexible duct connector is formed through fold repression by using fire-resistant fabric and punching sheet. With this technics,the gas tightness is good, the punching sheet is easy to be shaped, and the instalaation is convenient.

Product Commonly used specification:
Standard
result
Steel
Galvanized, 0.4 mm thick
Fabric
Fire-resistant fiberglass coated silicone
Color
Grey
Temperature Range
-30 Deg.C~ +280Deg.C 
Tensile Strength (N)
2300 x 1860
Anti-rips intensity
253,6 x 180,5
Length per Roll
25m, 30m, 45 m, 50 m
Square Diffuser

Description
The diffuser is used for supplying and returning air from different directions. It has disc-shaped blades with a fixed angle to effectively disperse the airflow.

Material & Finish
- Material: Extruded aluminum.
- Surface Finish: White powder coating.

Construction & Features: - Frame is made of extruded aluminum. - The diffuser blades consist of 4 discs made of aluminum sheets. - The frame is reinforced with 90° corner cleats.

Application: Suitable for direct mounting on ductwork or false ceilings.

Structural Diagram:

Technical Drawing:

Dimensions:

Elliptical Blade Grille

Description:

The elliptical blade grille is often used as a supply or return air grille. It can be designed with a single or double layer of blades and can be easily removed for inspection and cleaning.

Material & Finish:
- Material: Extruded aluminum.
- Surface Finish: White powder coating.

Construction & Features:

- Frame and blades are made of extruded aluminum.
- The blades have a hook structure to block rainwater.
- Can be fitted with an optional dust filter or insect screen

 

Structural Diagram:

Technical Drawing:

Dimensions:

T-Bar Grille

Description:

The T-Bar grille is commonly used for return air applications in air conditioning and ventilation systems.

Material & Finish:
- Material: Extruded aluminum.
- Surface Finish: White powder coating.

Construction & Features:

- Frame is made of extruded aluminum.
- Blades are made of hollow T-shaped extruded aluminum.
- Can be fitted with an optional dust filter or insect screen.

Application: Commonly mounted directly on ductwork or false ceilings.

Structural Diagram:

Technical Drawing:

Dimensions:

Double Frame Grille

Description:

The grille has a separate frame and core, allowing for easy removal and maintenance. This grille type includes two main models: double frame with elliptical blades and double frame with T-blades.

Material & Finish:

- Material: Extruded aluminum.
- Surface Finish: White powder coating.

Construction & Features:

- Frame and blades are made of extruded aluminum.
- Available in square or rectangular shapes depending on the design.

Application: Mounted on ceiling panels or walls.

Technical Drawing:

Image:

Slot Diffuser

Description:

A product with high aesthetic appeal, featuring adjustable blades to control airflow in multiple directions.

Material & Finish:

- Material: Extruded aluminum.
- Surface Finish: White powder coating.

Construction & Features:

- Frame and blades are made of extruded aluminum.
- Categorized as 1-slot, 2-slot, 3-slot, etc., corresponding to the number of narrow slots.

Application: Suitable for spaces such as restaurants, meeting rooms, and conference halls.

Structural Diagram:

Technical Drawing:

Dimensions:

Z-Blade Louver

Description:

The Z-blade louver is designed with layers of blades angled at 45 degrees, providing both protection and resistance against rainwater.

Material & Finish:

- Material: Extruded aluminum.
- Surface Finish: White powder coating.

Construction & Features:

- Frame is made of extruded aluminum.
- Blades are made of Z-shaped extruded aluminum for effective water shielding.
- Often installed with a dust filter or stainless steel mesh to prevent insects.

Application: Commonly installed outdoors.

Structural Diagram:

Technical Drawing:

Dimensions:

Egg Crate Grille

Description:

The face of the grille consists of small, uniform square cells, with the ability to adjust the airflow direction as required.

Material & Finish:

- Material: Extruded aluminum.
- Surface Finish: White powder coating.

Construction & Features:

- Frame is made of extruded aluminum.
- The core is designed with interwoven thin aluminum strips at right angles.
- Can be equipped with a volume control damper or a dust filter.

Application: Used as a return or supply air grille, typically mounted on false ceilings or directly on ductwork.

Structural Diagram:

Technical Drawing:

Dimensions:

Perforated Grille

Description:

Designed with small, evenly arranged holes to provide optimal and uniformly distributed airflow. This structure also helps to minimize external noise.

Material & Finish:

- Material: Extruded aluminum.
- Surface Finish: White powder coating.

Construction & Features:

- The frame is made of extruded aluminum.
- The grille face is perforated.
- Can be equipped with an optional volume control damper or a dust filter.

Application: Commonly installed in cleanrooms.

Structural Diagram:

Technical Drawing:

Dimensions:

Round Diffuser

Description:

The round diffuser is a type of multi-directional diffuser. Its disc-shaped blades with a fixed angle direct the airflow in various directions, providing optimal performance.

Material & Finish:

- Material: Extruded aluminum.
- Surface Finish: White powder coating

Construction & Features:

- Frame is made of extruded aluminum.
- Blades are made from a single stamped aluminum sheet.
- Can be equipped with an optional volume control damper, dust filter, or insect screen.

Structural Diagram:

Technical Drawing:

Dimensions:

Frameless Grille

Description:

The frameless grille offers high aesthetic value because its frame is designed to be hidden within the plaster ceiling, without being exposed.

Material & Finish:

- Material: Extruded aluminum.
- Surface Finish: White powder coating.

Construction & Features:

- Frame is made of extruded aluminum.
- The blade deflection is approximately 15° and 30°.
- There are no fixed sizes; it is manufactured in various dimensions based on customer requirements.

Application: Commonly installed in projects such as castles, villas, high-end apartments, and showrooms.

Key Advantages That
Make the Difference
Made in Vietnam
Strict quality control by Quang Ha experts,
ensuring a reliable supply chain.
International Standards
Meets fire safety standards (ASTM, UL 94).
Efficient Installation
Unique compressible design reduces transport
and storage costs by up to 90%.
Versatile & Flexible
Meets all technical requirements for even the most complex projects.
Our Test report
Connect direct via Zalo
Work Directly with
Vietnam's Leading HVAC Supplier
Quang Ha's expert team is ready to advise on the optimal GLOBIN ducting solution for your project - whether in Vietnam or worldwide.
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