Are you looking for the best duct manufacturing factories in China? With so many options available, it can be overwhelming to choose the right one. Let’s dive into a comparison of the top duct manufacturers in China, highlighting their strengths, specialties, and what sets them apart in the industry.

China Spiral Ducts and Fittings, Ventilation Mounting …

Product Details: SuperAir Group provides a wide range of HVAC/R products, including spiral ducts and fittings, ventilation mounting accessories, air conditioning installation components, and other refrigeration parts. Their products are used in various industries such as military, and in the manufacture of ventilation and exhaust pipes for trains, subways, and other facilities. They also offer customized and sourced quality HVACR products to meet specific customer requirements.

Pros:
– High quality and innovative products
– Fair pricing
– Unparalleled customer service
– Decades of experience in the industry
– Ability to manufacture, customize, or source products to meet specific requireme…

Cons:
– No specific cons mentioned on the website
– No information on potential limitations or drawbacks of their products or servic…

China Duct Fabrication Machinery Factory …

Premier Flexible Duct Supplier in China

Product Details: Biyang offers various types of flexible ducts, including Rectangular Flexible Duct, Aluminum Flexible Duct, Stainless Steel Flexible Duct, and High Temperature Flexible Duct. The Rectangular Flexible Duct is made of fire retardant aluminum foil, PET, and a strong steel wire structure, available in aluminum and PVC versions. The Aluminum Flexible Duct is constructed with aluminum foil, polyester film, and galvanized steel wire, suitable for low and medium pressure HVAC systems. The Stainless Steel Flexible Duct is made from pure 0.1mm stainless steel stripe, ideal for high temperature and corrosive environments. The High Temperature Flexible Duct is made from reinforced glass

fabric and fire-resistant aluminum foil, capable of withstanding up to 1000℃ temperatures.

Pros:
– Lightweight and easy to handle, transport, and install
– Highly customizable to fit specific requirements
– Fire-resistant and suitable for high-temperature applications
– Durable and can withstand various environmental, mechanical, and chemical elemen…
– Flexible and can be expanded to fit complicated structures
– Easy to install without professional help
– Versatile and can be used in various sectors and applications
– Low noise during air transfer in insulated versions
– Excellent corrosion resistance in stainless steel versions

Cons:
– Rectangular flexible ducts may not be as durable as rigid ducts
– Limited compressibility in some types, such as stainless steel flexible ducts
– Higher cost compared to some other duct materials
– May require additional accessories like duct tape and hose clamps for sealing an…
– Specific types may have limited temperature ranges or flexibility

hvac duct machine exporters in China-Ventech Automatic …

Ventilation Duct, HVAC Ductwork Manufacturer of China

Product Details: Biyang offers a variety of ventilation duct products, including Flexible Duct, Rigid Metal Ducting, and various ducting fittings and accessories. The flexible duct options include Aluminum Flexible Duct, Stainless Steel Flexible Duct, Flexible PVC Ducting, Insulated Flexible Duct, Flexible AC Duct, Nylon Duct, and Underground Ventilation Duct. Rigid metal ducting includes Stainless Steel Duct, Stainless Steel Spiral Duct, Galvanized Duct, Galvanising Spiral Ducting, Double Wall Spiral Duct, Rectangular Duct, and Oval Spiral Duct. Additional products include ducted hood ranges and various fittings such as volume control dampers, turning vanes, and takeoffs.

Pros:
– Flexible ducts are easy to install and can be compressed for cost-effective ship…
– Rigid metal ducts offer durability and can withstand various environmental condi…
– Insulation materials like fiberglass and mineral wool help maintain comfortable…
– Volume control dampers regulate air flow efficiently, available in both manual a…
– Turning vanes reduce air turbulence and resistance, ensuring smooth air flow.

Cons:
– Handling insulation materials like fiberglass requires protective gear due to po…
– Mineral wool insulation has limitations in extreme heat situations.
– Installation of rigid metal ducts can be more complex and labor-intensive compar…

China Spiral Ducts and Fittings Manufacturers and Suppliers

Product Details: Spiral ducts and fittings are made from galvanized steel and are formed from a coil of prime metal into rigid steel tubing with a 4-ply spiral lockseam. The interior is smooth to minimize friction loss, and the grooved seam is entirely on the outside. These ducts are ideal for HVAC systems, dust collection, fume venting, and other high-pressure applications. They are available in various sizes and can be joined using different types of connectors such as E-Z Flange, Barrel Clamp, and Spiral Pipe Connectors. Optional corrugations can increase the rigidity of the pipe by approximately 300%[1][2][3].

Pros:
– High resistance to crushing, approximately 2 ½ times that of longitudinal lockse…
– Smooth interior for low friction loss
– High structural strength and rigidity
– Fewer hangers and joints required
– Available in various sizes and lengths
– Corrosion-resistant materials such as galvanized steel and PVC-coated steel

Cons:
– May require additional fasteners for secure connections
– Installation can be complex without proper tools and expertise
– Higher cost compared to some other types of ducting materials
– Noise reduction may be necessary as spiral ducts can be noisy

Clean Air Flexible Ducts Manufacturer from China

Product Details: The Clean Air Flexible Ducts are manufactured by a world-class supplier in China, specializing in aluminum foil facing products. These ducts are primarily used in HVAC systems, refrigerators, and building thermal insulation. Key features include a lightweight design, high manufacturing accuracy, high strength, small inertia resistance, strong heat dissipation ability, and a good visual effect. The ducts come in various widths (1.0m, 1.2m, 1.25m, 1.30m, 1.37m) and lengths (200m, 500m, 1000m, 2500m, 2750m, 3300m) with core IDs of 3″ (76mm ±1) or 72mm ±1. Special sizes are available upon request. The minimum order quantity is 25 liters, with a supply

capability of 500,000 liters per month. Payment terms include TT or LC, and the loading port is Shanghai[5].

Pros:
– Lightweight design
– High manufacturing accuracy
– High strength
– Small inertia resistance
– Strong heat dissipation ability
– Good visual effect
– High reflectivity of foil surface (95%)
– Temperature resistance (-29°C to +66°C)
– Low water vapor permeance (1.15 ng/N.s)
– No delamination in water soak test
– Convenient installation
– No toxic gas emission

Cons:
– Minimum order quantity of 25 liters may be high for small projects
– Limited flexibility in terms of custom sizes without special requests
– Requires strict quality inspection and supervision which can be time-consuming

HVAC Ductwork Suppliers in China

Duct Fabrication Machines Manufacturer and Supplier in …

Product Details: KDM metal offers a wide range of duct fabrication machines, including those for air duct pipe and stainless steel plate fabrication. These machines are available in various designs and are used in industries such as automobiles, kitchenware, architecture, and air conditioning. The product lineup includes the auto flat oval duct fabrication making machine, rectangular duct fabrication machine, PLC Control Duct Fabrication Machine, and square duct fabrication machine. Each machine is designed with specific features such as adjustable speed converters, advanced PLC control, and high production capacities. KDM also provides customization options based on customer specifications and requirements.

Pros:
– Wide selection of duct fabrication machines available
– Cost-effective metal processing machines
– Works with an expert engineering team
– Reliable performance, low noise, stable operation, and long service life
– Simple and accurate operation
– Customization options based on customer specifications
– Used in various industries such as automobiles, kitchenware, and architecture

Cons:
– No specific mention of after-sales service or support
– No detailed information on maintenance requirements
– Dependence on customer specifications may delay production for custom orders

High Quality Pre-insulated HVAC Ductwork

Product Details: The UNTDuct PU System consists of sandwich panels with an external aluminum sheet covering a closed cell insulating material of polyurethane (PU) foam. The PU foam has a density of 55 kg/m³. The standard panel size is 3950mm1200mm20mm, with an aluminum foil thickness of 0.06 or 0.08 mm. The thermal conductivity of the PU foam is 0.022 W/m.k. These panels are suitable for both interior and exterior installations in various sectors, including residential, commercial, and industrial settings[3][5].

Pros:
– High thermal insulation with a thermal conductivity value of 0.022 W/m.k, increa…
– Extremely lightweight compared to sheet metal ducts, reducing weight on structur…
– Air-tightness is significantly higher than traditional ducts, reducing air leaka…
– Aluminum internal surfaces ensure hygiene and cleanliness, suitable for food and…
– Easy to manufacture and install on-site, reducing transport costs.
– Low participation in fire, with reduced smoke opacity and toxicity, meeting inte…

Cons:
– Higher initial cost compared to traditional ducting materials.
– Specialized tools and know-how may be required for installation.
– Limited availability and higher cost of replacement parts compared to traditiona…

Comparison Table

Company	Product Details	Pros	Cons	Website
China Spiral Ducts and Fittings, Ventilation Mounting …	SuperAir Group provides a wide range of HVAC/R products, including spiral ducts and fittings, ventilation mounting accessories, air conditioning insta…	– High quality and innovative products – Fair pricing – Unparalleled customer service – Decades of experience in the industry – Ability to manufacture…	– No specific cons mentioned on the website – No information on potential limitations or drawbacks of their products or servic…	www.hvacsupplychina.com
China Duct Fabrication Machinery Factory …				www.lockforming.com
Premier Flexible Duct Supplier in China	Biyang offers various types of flexible ducts, including Rectangular Flexible Duct, Aluminum Flexible Duct, Stainless Steel Flexible Duct, and High Te…	– Lightweight and easy to handle, transport, and install – Highly customizable to fit specific requirements – Fire-resistant and suitable for high-tem…	– Rectangular flexible ducts may not be as durable as rigid ducts – Limited compressibility in some types, such as stainless steel flexible ducts – Hi…	buyductings.com
hvac duct machine exporters in China-Ventech Automatic …				www.ventechmachine.com
Ventilation Duct, HVAC Ductwork Manufacturer of China	Biyang offers a variety of ventilation duct products, including Flexible Duct, Rigid Metal Ducting, and various ducting fittings and accessories. The…	– Flexible ducts are easy to install and can be compressed for cost-effective ship… – Rigid metal ducts offer durability and can withstand various e…	– Handling insulation materials like fiberglass requires protective gear due to po… – Mineral wool insulation has limitations in extreme heat situat…	buyductings.com
China Spiral Ducts and Fittings Manufacturers and Suppliers	Spiral ducts and fittings are made from galvanized steel and are formed from a coil of prime metal into rigid steel tubing with a 4-ply spiral locksea…	– High resistance to crushing, approximately 2 ½ times that of longitudinal lockse… – Smooth interior for low friction loss – High structural streng…	– May require additional fasteners for secure connections – Installation can be complex without proper tools and expertise – Higher cost compared to s…	www.hvacsupplychina.com
Clean Air Flexible Ducts Manufacturer from China	The Clean Air Flexible Ducts are manufactured by a world-class supplier in China, specializing in aluminum foil facing products. These ducts are prima…	– Lightweight design – High manufacturing accuracy – High strength – Small inertia resistance – Strong heat dissipation ability – Good visual effect -…	– Minimum order quantity of 25 liters may be high for small projects – Limited flexibility in terms of custom sizes without special requests – Require…	www.okorder.com
HVAC Ductwork Suppliers in China				www.globalspec.com
Duct Fabrication Machines Manufacturer and Supplier in …	KDM metal offers a wide range of duct fabrication machines, including those for air duct pipe and stainless steel plate fabrication. These machines ar…	– Wide selection of duct fabrication machines available – Cost-effective metal processing machines – Works with an expert engineering team – Reliable…	– No specific mention of after-sales service or support – No detailed information on maintenance requirements – Dependence on customer specifications…	kdmmetal.com
High Quality Pre-insulated HVAC Ductwork	The UNTDuct PU System consists of sandwich panels with an external aluminum sheet covering a closed cell insulating material of polyurethane (PU) foam…	– High thermal insulation with a thermal conductivity value of 0.022 W/m.k, increa… – Extremely lightweight compared to sheet metal ducts, reducing…	– Higher initial cost compared to traditional ducting materials. – Specialized tools and know-how may be required for installation. – Limited availabi…	www.untduct.net

Frequently Asked Questions (FAQs)

Frequently Asked Questions About Duct Manufacturing Factories in China

How do I find a reliable duct manufacturing factory in China?

To find a reliable duct manufacturing factory in China, you should conduct extensive research and due diligence. Look for manufacturers through reputable platforms like Alibaba, Made in China, or by attending trade fairs such as the Canton Fair. It’s also advisable to partner with manufacturing experts who have experience working with Chinese companies to help you navigate the process and ensure you’re dealing with trustworthy suppliers.

What are the key steps in the manufacturing process I should be aware of?

Before starting production, you need to provide the factory with detailed product specifications, such as CAD drawings and a bill of materials. The factory will then produce pre-production samples for your evaluation. Once you’re satisfied with the samples, mass production can begin. It’s crucial to have a local presence or work with a trusted agent to oversee production and conduct regular quality control checks to ensure the products meet your standards.

How can I ensure quality control in a Chinese duct manufacturing factory?

Ensuring quality control involves several steps. You should ask to see the factory’s quality management system in action, including how they control incoming components, conduct in-process quality control, and perform final quality checks. It’s also important to check if they send samples for laboratory testing and to review the test results. Regular factory visits or hiring a local agent to conduct spot checks can help maintain high-quality standards.

What are the typical lead times and production timelines for duct manufacturing in China?

The lead times for duct manufacturing in China can vary depending on the complexity of the product and the factory’s capacity. Generally, sourcing and negotiations take about three weeks, tooling around 45 days, and sampling a few weeks to a few months. Production itself can take between 15 to 60 days, and shipping can range from 10 to 40 days, depending on the mode of transportation and customs clearance.

How do I protect my intellectual property when working with a Chinese manufacturer?

To protect your intellectual property, it’s essential to draft a comprehensive Original Equipment Manufacturing (OEM) contract. This contract should include details on specifications, pricing, packaging, and most importantly, clauses that protect your intellectual property rights and confidentiality. Ensuring the contract is clear and legally binding in both your country and China can help safeguard your IP. Additionally, working with a trusted intermediary or legal advisor can provide extra protection.