Galvanized Spiral DuctGalvanized Spiral DuctGalvanized Spiral DuctGalvanized Spiral Duct
70°C Fire Damper70°C Fire Damper
Weather LouvreWeather Louvre
Round BendRound Bend
Exposed Spiral Ductwork in an OfficeCommercial & Workplace
Roof-Level Ventilation for a Production HallIndustrial & Logistics
General Extract Ductwork in a WorkshopIndustrial & Logistics
Air-Handling Unit Connections in a Plant RoomPlant Rooms & Building InterfacesVentilation equipment. Project-ready coordination.
Ventilation products built around your project.
WANJINGDE connects ductwork, dampers, air outlets and fittings through one clear product range. Share your drawings and requirements to align materials, dimensions, connections and quantities.
Learn about our workflow →8 familiesCore product families
To drawingDimensions and interfaces
Project fitProject supply matching
99Ventilation product types
Product family
Eight product families. One ventilation range.
Begin with the system duty, then confirm materials, dimensions, installation methods and the required accessories.
Air Ducts
Spiral, flanged, welded and flexible ducts.
View family →Duct Fittings
Bends, branches, reducers, connectors and access parts.
View family →Fire & Smoke
Fire dampers, smoke dampers and smoke-control outlets.
View family →Control & Check Dampers
Airflow control, backdraft prevention and pressure relief.
View family →Louvres & Air Outlets
Louvres, return grilles and supply-air terminals.
View family →Silencers & Plenums
Duct silencers and air-distribution boxes.
View family →Cowls & Installation
Cowls, hoods, flues and duct installation parts.
View family →Spiral Steel Pipes
Welded steel pipes, protective finishes and matching pipe fittings.
View family →Featured products
Ventilation products for practical project requirements.
Explore product types and selection considerations. Final specifications follow the approved drawing and written supply confirmation.
Spiral Ducts
Galvanized Spiral Duct
Round and oval ducts for supply, return and extract air.
Galvanized SteelSpiral DuctsConnections to drawing
View product →
Spiral Ducts
Insulated Spiral Duct
Round and oval ducts for supply, return and extract air.
Galvanized SteelSpiral DuctsConnections to drawing
View product →
Other Ducts
Welded Duct
Duct sections selected around routing, connections and installation space.
Galvanized SteelOther DuctsConnections to drawing
View product →Bends
Round Bend
Change duct direction to suit the installation route.
Galvanized SteelBendsConnections to drawing
View product →
Bends
S Bend
Change duct direction to suit the installation route.
Galvanized SteelBendsConnections to drawing
View product →
Branches & Reducers
Duct Cross
Split airflow or connect different duct sizes and shapes.
Galvanized SteelBranches & ReducersConnections to drawing
View product →Featured Cases
Installation references for different building spaces.
Explore six installation scenes, then browse all 36 examples by application.
Commercial & WorkplaceExposed Spiral Ductwork in an Office
An illustrative office-ceiling layout showing circular mains, branches and coordinated air terminals.
Galvanized Spiral DuctDuct TeeDouble Louvre
View case →
Hospitality & ResidentialVentilation Branches for Hotel Guestrooms
A guestroom reference for compact ceiling branches and coordinated supply and return terminals.
Composite Insulated DuctReturn GrilleLinear Diffuser
View case →Industrial & LogisticsRoof-Level Ventilation for a Production Hall
A production-hall reference for overhead ventilation mains and coordinated air-distribution components.
Perforated Air DuctRound BendMotorized Control Damper
View case →
Public & InstitutionalFresh-Air Distribution for a Classroom
A classroom reference matching ceiling branches and terminals to the teaching-space layout.
Composite Insulated DuctSquare DiffuserReturn Grille
View case →Plant Rooms & Building InterfacesAir-Handling Unit Connections in a Plant Room
A plant-room reference showing duct transitions, equipment interfaces and service clearances.
TDF Flanged DuctConcentric ReducerSplitter Silencer
View case →
Underground & Service SpacesBasement Car-Park Ventilation Ductwork
An illustrative basement layout combining high-level duct routes, branches and accessible components.
TDF Flanged DuctManual Control DamperRound Bend
View case →Application areas
Ventilation solutions shaped around the space and duty.
01 / COMMERCIAL
Commercial ventilation
Supply, return and general extract ventilation for shops, hotels and office buildings.
02 / INDUSTRIAL
Industrial & equipment
Materials and interfaces matched to workshops, equipment and process requirements.
03 / PUBLIC BUILDINGS
Public building air distribution
Air terminals matched to interior layouts, ceilings and air distribution requirements.
04 / BASEMENT
Basement extract
Ductwork, dampers and fittings coordinated against the project ventilation design.
Illustrative process image; not a WANJINGDE factory photographSpecification checks. Coordinated supply.See our quality process →
From requirement checks to delivery and support.
Check dimensions, materials, connections and accessories against the agreed drawings and supply list. Coordinate packaging, identification and documentation with the delivery requirements.
01
Requirement confirmation
System duty, environment, dimensions, materials, connections and required accessories.
02
Configuration matching
Product construction and interfaces matched to drawings and site requirements.
03
Production & inspection follow-up
Agreed checks for dimensions, appearance, operation and packaging.
04
Delivery & support coordination
Delivery documents, site feedback and clear support communication.
Project documentation
Confirm the documents needed for your product and project.
MaterialsDrawingsInspectionsInstallation
Documentation depends on the product and project. Confirm the applicable material, inspection, installation and compliance documents for the exact item.
Start with your application
Request a solution →Turn your ventilation requirements into a clear supply list.
Share the system duty, drawings, dimensions and quantities. WANJINGDE will help clarify product scope, connections and accessories.
