Flat pattern development for boilermaking, in the browser: cones, cylinders, segmented bends, pipe branches, transitions and more — 50 parts. Every part calculates on its own page, no account needed. A free account gives unlimited calculations, 3D, to-scale PDF, history and 3 parts a month in DXF. Calculated on the neutral line, in mm or inches. DXF comes in cut, bend and weld layers, ready for plasma, laser and oxy-fuel. Full access: one-off 12-month purchase (US$79), no auto-renewal.
