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Place of Origin : china
Function : ventilation duct connector
Supply Ability : 5,000 units/month
Materials : stainless steel, aluminium, etc.
Packaging Details : bubble wrap + cardboard box
Fabrication Services : OEM/ODM custom metal fabrication
Applications : ventilation/exhaust systems
Delivery Time : within 20 working days
Structure : different diameters
Name : custom metal duct
Surface Treatment : wire drawing, polishing, etc.
MOQ : 100 pieces
Payment Terms : T/T,
Process : laser cutting, bending, etc.
Brand Name : custom
Custom Metal Different Diameters Ductwork Fabrication for Ventilation Systems
This reducer is used to connect and transition between different pipe diameters in ventilation duct systems, enabling direct connection between large- and small-diameter ducts. It features a tapered design that creates a clearly defined dimensional transition, meeting the system’s requirements for localized diameter adjustments. With its compact structure and secure connection, the product is compatible with a variety of duct layouts, ensuring system installation compatibility and overall airtightness.
| Material Types | Carbon Steel / Stainless Steel / Aluminium / Iron, etc. |
| Fabrication Method | Laser Cutting / Metal Bending / Tube Bending / Stamping / Machining / Welding / Riveting, etc. |
| Surface Treatment | Wire Drawing / Surface Grinding / Polishing / Electroplating / Anodising / Powder Coating / Baking Finish / High-temperature Coating / Sand Blasting / Enamelling / Pickling & Passivation, etc. |
| Cutting Precision | ±0.1 mm (±0.004 in) |
| Bending Range | 0.3-10 mm (0.012 - 0.394 in) |
| Pressure Tonnage Range | 35T - 150T |
| Pipe Bending Diameter Range | 6-200 mm (0.236 - 7.87 in) |
| Acceptable Drawing Formats | PDF / DWG / DXF / STEP (.step/.stp) / IGES (.iges/.igs) / SolidWorks files (.sldprt/.sldasm) |
| Production Support | Prototype to Mass Production |
Uses
Industrial ventilation systems, dust collection and exhaust systems, and air conditioning supply and exhaust ductwork projects.
One-Stop Sheet Metal Solutions, From Concept to Production

FAQ
Q1: How are reducer ducts fabricated?
A1: The sheet metal is cut, bent, and seamed, resulting in a size difference between the two ends.
Q2: How are they adapted to various duct systems?
A2: The ends are custom-made as needed and connect directly to the existing ductwork.
Q3: How is an airtight seal ensured at the joints?
A3: The duct ends are flanged and fitted together, ensuring a tight contact surface and a strong seal.
Q4: What factors should be considered when selecting sheet metal materials?
A4: Strength, corrosion resistance, formability, the operating environment, and cost should all be taken into account to achieve optimal product performance and cost-effectiveness.
Q5: How does the bending radius affect the quality of sheet metal fabrication?
A5: A proper bending radius helps prevent material cracking, improves dimensional accuracy, and ensures consistent forming quality.
Q6: How can deformation during sheet metal welding be minimized?
A6: By optimizing weld design, controlling the welding sequence, and using specialized fixtures, welding deformation can be effectively reduced and assembly accuracy improved.
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Custom Metal Different Diameters Ductwork Fabrication for Ventilation Systems Images |