Unfolded lateral surface of a symmetrical vent duct wye.
It is cut out on sheet metal with further circular rolling.

Ducts for ventilation.
Sheet thickness (s)
mm
Vertical height (H) of oblique cones
mm
Оffset of centres (C) of cones bases
mm
Outer diameter (d) of smaller base
mm
Outer diameter (D) of larger base
mm
Number (N) of separation parts - points - of surface
point
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