Custom PP Ducts and Fittings

Special-shape PP ducts, custom connectors, flexible joints, rain caps and elevated exhaust stacks can be fabricated for site layouts and process requirements that standard products cannot cover.

CAD Drawing Customization

Send the CAD drawing, duct dimensions, installation layout and process requirements. We will develop the rectangular or round PP ductwork and fittings to match the project.

Custom Rectangular Duct Sheet Thickness

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Duct Side b (mm)	Recommended Thickness (mm)
b ≤ 320	≥ 4
320 < b ≤ 500	≥ 5
500 < b ≤ 700	≥ 6
700 < b ≤ 1100	≥ 8
1100 < b ≤ 2000	≥ 10
b > 2000	As required

Custom Round Duct Sheet Thickness

↔ Swipe horizontally to view all specifications.

Duct Diameter D (mm)	Recommended Thickness (mm)
D ≤ 320	2.0–4.0
320 < D ≤ 450	≥ 4
450 < D ≤ 600	≥ 5
600 < D ≤ 800	≥ 6
800 < D ≤ 1200	≥ 8
1200 < D ≤ 2000	≥ 10
D > 2000	As required

Custom Fittings

Available custom items include reducers, standard silencers, single-side guides, elbows, eccentric fittings, electric and manual dampers, tees, crosses, check valves, rain caps, fan flexible connectors and elevated exhaust stacks.