What is the diameter range of the flexible ducts?

The diameter range is 3-48 inches (75mm-1200mm) for most models, while semi-rigid ducts range from 80mm-800mm.

Is the duct material fire-resistant?

Yes, aluminum ducts meet Class B1 fire resistance (GB8624), and semi-rigid ducts are classified as non-combustible.

What is the maximum air velocity these ducts can handle?

Most aluminum and PVC ducts support a maximum air velocity of 30 m/s, while semi-rigid ducts support 25 m/s.

What is the working pressure capacity?

Aluminum and PVC ducts have a working pressure of 2500 Pa, while semi-rigid ducts are rated for 2000 Pa.

Are custom colors available for PVC ducts?

Yes, PVC ducts are available in Black, Gray, White, and other colors according to requirements.

What is the standard length of the ducts?

Standard lengths include 10M, 6M, and 5M for aluminum ducts, and 6M, 3M, 1.5m for semi-rigid ducts.

What materials are used in the insulated flexible duct?

It consists of aluminum/polyester lining, steel spiral, 16-32kg/m3-25mm glass wool insulation, and an aluminum/polyester jacket.

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Alum Semi Rigid Flexible Duct with High Quality in HVAC

Jinan United Perfect Building Materials Corporation

10 yrs

5.0 (5 Reviews)

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Product Highlights

Wide Diameter Range: Available in diameters from 3-48 inches (75mm-1200mm) for various HVAC needs.
Fire Safety Certified: Meets Class B1 fire resistance standards (GB8624) or is non-combustible.
Flexible & Extendable: Features high elasticity with extension rates up to 1:6 for easy installation.
Low Noise Performance: Designed for low noise operation, suitable for schools, hospitals, and offices.
Multi-Layer Construction: Constructed with aluminum foil, PET, steel wire, and glass wool insulation.
Lightweight Design: Very light with negligible extra load, ensuring easy handling and installation.
High Pressure Tolerance: Withstands working pressures up to 2500 Pa for reliable system performance.

Product Attributes

Customization: Available
Material: Alum Foil with Pet and Steel Wire
Usage: for Air Conditioner
Model NO.: SRD-100, SRD-150, SRD-200, SRD-250
Application: HVAC Industry
Shape: Round
Performance: Low Noise
Transport Package: Cartons Packing
Specification: 100mm*10m, 150mm*10m, 200mm*10m etc.
Trademark: PMAX
Origin: China
Production Capacity: 10000000 Rolls/Year
Package Size: 100.00cm * 30.00cm * 100.00cm
Package Gross Weight: 0.350kg
Lead Time: 15 days (1 - 1000 Pieces)
To be negotiated ( > 1000 Pieces)

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Alum Semi Rigid Flexible Duct with High Quality in HVAC

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Alum Semi Rigid Flexible Duct with High Quality in HVAC
Alum Semi Rigid Flexible Duct with High Quality in HVAC
Alum Semi Rigid Flexible Duct with High Quality in HVAC
Alum Semi Rigid Flexible Duct with High Quality in HVAC
Alum Semi Rigid Flexible Duct with High Quality in HVAC
Alum Semi Rigid Flexible Duct with High Quality in HVAC
Alum Semi Rigid Flexible Duct with High Quality in HVAC

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Alum Semi Rigid Flexible Duct with High Quality in HVAC
Alum Semi Rigid Flexible Duct with High Quality in HVAC
Alum Semi Rigid Flexible Duct with High Quality in HVAC
Alum Semi Rigid Flexible Duct with High Quality in HVAC
Alum Semi Rigid Flexible Duct with High Quality in HVAC
Alum Semi Rigid Flexible Duct with High Quality in HVAC
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Product Description

Jinan United Perfect Building Materials Corporation
is professional manufacturer of Flexible ducts and we have engaged in research, develop and produce flexible duct products for 10 years with rich experience.
We provide customers with green and eco-friendly bare flexible duct, insulated flexible duct, PVC flexible duct, semi rigid duct products etc. to create a better working and living environment for people.
1, Aluminum Bare Flexible Duct

Aluminum bare flexible duct (Aluminum non-insulated flexible duct) is specifically produced for low and medium pressure heating, cooling, ventilation, exhaust and air conditioning systems. Aluminum non-insulated flexible duct (ABD series) is produced from multi layer aluminum strengthened with high tension hard steel spring wire. It has high elasticity and flexibility.

Parameter	Alum bare duct (1 layer)	Alum bare duct (2 layers)
Diameter Range	3-48 inches (75mm-1200mm)	3-48 inches (75mm-1200mm)
Temp. Range	-30 ºC to 140 ºC	-30 ºC to 140 ºC
Max. Air Velocity	30 m/s	30 m/s
Working Pressure	2500 Pa	2500 Pa
Fire Resistance	Class B1 (GB8624)	Class B1 (GB8624)
Standard Length	10M, 6M, 5M, etc.	10M, 6M, 5M, etc.

2, Aluminum Insulated Flexible Duct

Aluminum Insulated Flexible Duct is made of aluminum/polyester lining with well balanced steel spiral internal duct+(16-32)kg/m3-25mm glass wool+ aluminum/polyester external duct.
It is suitable for the densely-populated area with high requirement of the environment area, such as school, hospital, laboratory, supermarket, office, stadium, theater etc.
2.1 Normal Insulated Flexible Ducts
Alum Semi Rigid Flexible Duct with High Quality in HVAC

Parameter	Alum Insulated duct (1 layer)	Alum Insulated duct (2 layers)
Inner Duct	1 layer alum foil	2 layers alum foil
Insulation Layer	16-32kg/m3-25mm glass wool	16-32kg/m3-25mm glass wool
Jacket Duct	PET foil + alum foil	PET foil + alum foil
Diameter Range	3-48 inches (75mm-1200mm)	3-48 inches (75mm-1200mm)
Temp. Range	-30 ºC to 140 ºC	-30 ºC to 140 ºC
Max. Air Velocity	30 m/s	30 m/s
Working Pressure	2500 Pa	2500 Pa
Fire Resistance	Class B1 (GB8624)	Class B1 (GB8624)
Standard Length	10M, 6M etc.	10M, 6M etc.

(Noise reduction flexible duct is also available according to requirement.)
2.2 Special Insulated Flexible Ducts

Square and rectangle insulated flexible duct is needed in some project, so does white fiber glass wool insulated flexible ducts. Below is the technical data:

Parameter	Rectangle insulated duct	White glasswool insulated duct
Inner Duct	1 layer alum foil	2 layers alum foil
Insulation Layer	16-32kg/m3-25mm glass wool	16-32kg/m3-25mm white glass wool
Jacket Duct	PET foil + alum foil	PET foil + alum foil
Diameter Range	>100mm*100mm	3-48 inches (75mm-1200mm)
Temp. Range	-30 ºC to 140 ºC	-30 ºC to 140 ºC
Max. Air Velocity	30 m/s	30 m/s
Working Pressure	2500 Pa	2500 Pa
Fire Resistance	Class B1 (GB8624)	Class B1 (GB8624)
Standard Length	10M, 6M etc.	10M, 6M etc.

3, Semi Rigid Duct

Semi Rigid Duct (Semi-flexible aluminum air duct) is flexible, extendable and highly reliable for low and medium pressure air conditioning, ventilation, boiler systems and chimney liners. It is very light with negligible extra load, easy to install and it is non-flammable.

Parameter	Semi rigid duct 1^st generation	Semi rigid duct 2^nd generation
Seal Way
Foil thickness	60micron to 120 micron	60micron to 120 micron
Diameter Range	80 mm-800mm	80-800
Temp. Range	-30 ºC to 250 ºC	-30 ºC to 250 ºC
Max. Air Velocity	25 m/s	25 m/s
Working Pressure	2000 Pa	2000 Pa
Fire Resistance	Non-combustible	Non-combustible
Standard Length	6M, 3M, 1.5m	6M, 3M, 1.5m
Corrugations	9; 4; Etc	7; 4; Etc
Extension rate	1:3	1:6

4, PVC duct and PVC Combined Duct

Parameter	PVC duct	Combined PVC duct
Inner Duct	1 layer PVC tape/2 layers PVC tape	1 layer alum foil+1 layer PVC tape
Diameter Range	3-48 inches (75mm-1200mm)	3-48 inches (75mm-1200mm)
Colors	Black, Gray, White, etc	Black, Gray, White, etc.
Temp. Range	-30 ºC to 150 ºC	-30 ºC to 150 ºC
Max. Air Velocity	30 m/s	30 m/s
Working Pressure	2500 Pa	2500 Pa
Fire Resistance	Class B1 (GB8624)	Class B1 (GB8624)
Standard Length	10M, 6M, etc.	10M, 6M, etc.

About the Supplier

This supplier has been audited by BV. Verify the report on the official BV website with ID "MIC-ASR2351483". Items marked "" are certified.

Jinan United Perfect Building Materials Corporation

Company Profile

Jinan united perfect building materials corporation is professional in the research, development, sales of foil lamination, fiberglass materials, roofing membrane, rock wool, glass wool etc. With rich experience for years.

Loving & focusing on the building materials, dedicated to strict quality control & thoughtful customer service, our experienced & diligent staff are always happy to discuss and support your requirements on reinforced aluminum foil kraft, aluminum foil with glass fabric, aluminum foil with woven fabric, Alupet, thermal insulation, roofing & walling membrane, fiber glass composite materials, acoustic ceiling & wall panel for decoration, HVAC accessories etc. Professionally.

In addition, we have obtained CE and products brand certificates with qualified quality, and have cooperation with famous real estate companies, such as Wanda, Longfor, Landlord, famous contractors and building materials distributors etc. In Chinese domestic building materials market.

Further more, our products are also exported to clients in USA, Canada, Italy, Germany, Brazil, Chile, Australia, Japan, Korea, Viet Nam etc. With high reputation and we are glad to offer excellent products & solutions for our partners to support our partners and develop together.

Our alum foil lamination and fiberglass products and experience also win the trust & cooperation from TOP 500 partners the world.

We warmly welcome customers at home and abroad to cooperate with us for mutual success & development.

About Our Factory & Business Background

Address: No. 57 Industrial South Road, Jinan, Shandong, China
Terms of Payment: LC, T/T, Western Union, Small-amount payment
International Commercial Terms(Incoterms): FOB, CFR, CIF
Average Lead Time: Peak Season Lead Time: within 15 workdays
Off Season Lead Time: within 15 workdays
Nearest Port: QINGDAO, NANJING, SHANGHAI, YANTIAN

Our Production Capability & Technical Expertise

Main Products: Aluminum Foil Lamination Facing, Aluminum Foil Fiberglass Fabric, Synthetic Roofing Underalyment, 7628 Fiberglass Fabric, Black Fiberglass Fabric Bgf, Black Fiberglass Tissue Bgt, Rock Wool Insulation, Fiberglass Wool Insulation

Our Industry Experience & Global Business Record

Export Year: 2007-05-01
Main Markets: North America, South America, Eastern Europe, Southeast Asia, Africa, Mid East

FAQ

What is the diameter range of the flexible ducts?: The diameter range is 3-48 inches (75mm-1200mm) for most models, while semi-rigid ducts range from 80mm-800mm.
Is the duct material fire-resistant?: Yes, aluminum ducts meet Class B1 fire resistance (GB8624), and semi-rigid ducts are classified as non-combustible.
What is the maximum air velocity these ducts can handle?: Most aluminum and PVC ducts support a maximum air velocity of 30 m/s, while semi-rigid ducts support 25 m/s.
What is the working pressure capacity?: Aluminum and PVC ducts have a working pressure of 2500 Pa, while semi-rigid ducts are rated for 2000 Pa.
Are custom colors available for PVC ducts?: Yes, PVC ducts are available in Black, Gray, White, and other colors according to requirements.
What is the standard length of the ducts?: Standard lengths include 10M, 6M, and 5M for aluminum ducts, and 6M, 3M, 1.5m for semi-rigid ducts.
What materials are used in the insulated flexible duct?: It consists of aluminum/polyester lining, steel spiral, 16-32kg/m3-25mm glass wool insulation, and an aluminum/polyester jacket.