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Spiral Duct

Leading Spiral Duct Suppliers in China

Looking for robust, high-performance spiral ducts? BromingHvac has you covered for all your HVAC requirements.
As a trusted manufacturer in China, BromingHvac specializes in premium spiral ducts engineered for various industrial and commercial applications. Our expertly designed ducts are built for exceptional strength, efficiency, and long-term durability, ensuring optimal airflow in your ventilation systems. Reach out to us today to learn how our spiral ducts can improve your HVAC operations. Choose BromingHvac for all your spiral duct solutions.
Economical Pricing Options
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Broming’s Spiral Duct 

Whether you’re working with industrial ventilation, commercial HVAC, or any specialized application, our Spiral Ducts are engineered to provide efficient airflow, durability, and seamless integration into your system.

Spiral Ducts are an advanced solution for efficient and reliable air distribution in HVAC systems. Their unique design and robust construction make them the preferred choice for various industrial, commercial, and residential applications. Let’s explore the key features and the scenarios where Spiral Ducts truly excel.

1. Enhanced Durability and Strength

Spiral Ducts are constructed with a spiral seam, providing exceptional strength and resistance to external pressure, making them more durable than standard rectangular ducts. This feature is especially beneficial in systems where ducts are exposed to physical stresses, such as in industrial or high-traffic environments.

2. Superior Airflow Efficiency

The smooth, circular shape of Spiral Ducts reduces airflow resistance and turbulence, leading to smoother and more efficient air distribution. This improves the overall efficiency of HVAC systems, which can result in lower energy consumption and reduced operating costs for businesses.

3. Space-Saving Design

The compact, cylindrical design of Spiral Ducts allows them to fit into tighter spaces and be more flexible in design. This is particularly useful for installations in areas with limited space, such as ceiling voids, narrow shafts, or retrofit projects where existing infrastructure limits options.

4. Reduced Noise and Vibration

Due to their smooth inner surface and structural integrity, Spiral Ducts help minimize noise and vibration within HVAC systems. This makes them a preferred choice for environments where maintaining a quiet atmosphere is critical, such as office buildings, hospitals, and educational institutions.

5. Easy Installation and Customization

The flexibility of Spiral Ducts allows for easy customization in terms of size, material, and length to fit specific system requirements. Additionally, their modular design allows for quick and hassle-free installation, reducing labor costs and installation time.

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Our Spiral Duct Features

Smooth Airflow & Low Leakage

The spiral seam design ensures uniform airflow and minimizes pressure loss, delivering better energy performance than rectangular ducts.

High Structural Strength

The continuous spiral seam construction provides excellent rigidity, allowing longer unsupported duct runs with fewer hangers.

Quick Installation

Pre-fabricated lengths and easy-to-use fittings reduce on-site labor time and simplify system assembly.

Versatile Design Options

Available in multiple diameters and materials, with compatible fittings such as elbows, reducers, and take-offs for complete air duct systems.

We offer the following Spiral Duct

Diameter sizes ranging from 4” to 60”
Single wall spiral duct insulated or uninsulated
Double wall spiral duct insulated or uninsulated
Metal types including G90 galvanized, aluminum, stainless, and paint grip
Built to SMACNA standards
Available with flange connections
Gasketed and non-gasketed fittings

Spiral Duct Fittings and Connectors

BromingHVAC is proud to offer quality pressed, adjustable, gorelock, and welded spiral duct fittings. Our products include, but are not limited to:
Adjustable elbows
Gorelock elbows
Couplers
End caps
Reducers
Square to rounds
HETOs
Tees
Saddles
Conicals
spiral duct fittings

Specifications for Broming’s Spiral Duct

MaterialGalvanized Steel (G90 / DX51D+Z), Stainless Steel, or Aluminum
Diameter Range100 – 1600 mm
Thickness0.5 – 1.2 mm
LengthStandard 3 m or 4 m sections
Connection TypeSlip Joint, Coupling, or Flange System
StandardsSMACNA / DW144 / ISO 9001
Surface FinishZinc Coated / Powder Coated / Painted
ApplicationAir Supply, Return Air, Exhaust, and Fresh Air Systems

Applications & Manufacturing of Spiral Duct

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Rectangular ducts are widely used in HVAC projects that demand large air volume and high structural stability.
Each rectangular duct is fabricated from prime galvanized steel coils using automated cutting and folding machines.
The production process ensures tight dimensional tolerance, reinforced seams, and high leak-tightness.
Applications
Office buildings and commercial centers
Industrial ventilation and process exhaust
Underground parking and tunnel systems
Airports, metro stations, and transport terminals
Public buildings, auditoriums, and warehouses

Why Choose Broming Factory’s Spiral Duct

Spiral Ducts are becoming the go-to choice for businesses looking for efficiency, durability, and reliability in their HVAC systems. With advanced manufacturing techniques and a focus on performance, these ducts provide superior airflow, noise reduction, and long-lasting strength. Ideal for a variety of applications, Spiral Ducts are an excellent solution for companies that need high-performance, cost-effective air distribution systems without compromising on quality or design.
High Quality Manufacturing
At BromingHvac, we apply modern manufacturing practices to ensure that our rectangular ducts meet global standards. With certifications like ISO 9001, we use top-grade materials and precision engineering to guarantee the performance, durability, and efficiency of every duct. Our commitment to quality ensures that each rectangular duct is built to withstand the demands of industrial and commercial HVAC systems.

Welcome to BromingHVAC’s Spiral Duct Factory

Our plants are equipped with the most advanced technology, allowing us to engineer high-quality ducts in order to cater for the global industry’s requirements. 
Mastering the Art of Compounding with the Spiral Duct
This article explores Spiral Ducts, which are widely used in HVAC systems to optimize airflow efficiency and enhance air distribution. It covers the key components, design features, and practical uses of Spiral Ducts, offering an in-depth understanding of this essential HVAC component. Whether you’re just starting to learn about ventilation systems or you’re looking for a more detailed understanding, this guide will show you how Spiral Ducts contribute to more efficient, durable, and reliable air management in modern HVAC applications.

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answers to Common Queries about Spiral Duct

Q:What are Spiral Ducts, and how are they different from traditional rectangular ducts?

A:Spiral Ducts are cylindrical ducts that provide enhanced airflow efficiency due to their smooth inner surface and spiral seam design. Unlike traditional rectangular ducts, which can create more airflow resistance, Spiral Ducts reduce turbulence, improve air distribution, and save energy. They are ideal for spaces with limited installation room and offer greater durability and structural integrity.