PipeDev — Tapered Main Branch

Tapered Main Branch

Conical main (D→d) with a cylindrical branch — frustum development plus branch opening.

Principle & formula

The conical main is developed as a frustum sector. The branch is a cylinder; its opening is marked on the sector at the local main radius (interpolated at the branch station).

Large diameter (D)

Small diameter (d)

Main length (H)

Branch diameter (db)

Branch station (z0)

Branch length (Lb)

Advanced — material & allowance

Material thickness (t)

Hem / seam allowance (a)

Second plate (companion)

Development Pattern

Print at 100% scale. Dimensions are in millimetres.