A two-piece transition can be cut out of a sheet economically and has only two seams.
As the transition is sym- metrical, a full plan view is not required.

Sheetmetal Transition - Rectangular/Square to Round. Any and all ideas are greatly appreciated. How to develop a Square to Round . Can someone help me understand the best way to do this in Pro-E? 2.0 The Rectangular Transition 2.1 Developing a Rectangular Transition The pattern of a rectangle to round is also developed using triangulation method. Instructions on how to mark out completely by hand and how to mark developed pattern onto plate are included. A special “Square to round”. Rectangle To Round Software - Free Download Rectangle To Round - Top 4 Download - Top4Download.com offers free software downloads for Windows, Mac, iOS and Android computers and mobile devices. Thanks A true understanding of what "True Length" means and how to find and see true lengths is everything in pattern development by means of triangulation. A transition connects square or rectangular duct to a round pipe or round flexible duct. Mild steel plates will be cut and welded to fill the triangular areas. A rectangle to round transition where the base may be at an angle and offset from the rectangle. Visit for free, full and secured software’s. The Square to Round pattern is a commonly used fitting with many variable dimensions and options. Square To Round Software - Free Download Square To Round - Top 4 Download - Top4Download.com offers free software downloads for Windows, Mac, iOS and Android computers and mobile devices. If the duct is relatively small and the change is only in the height of the duct, such as a 12- x 12-inch duct changing to a 12- x 6-inch duct (Figure 1), the transition is often made in two pieces. In which case it is essential that the user know which offset dimensions are being requested and how to change them if necessary. Square to Round Mild Steel Fabrication. Please help! I choose a vertical centerline as the trajectory, and the square sketch below and round sketch above, but it won't construct properly. - The part is currently symmetric, but you can can delete the constraints in the model inside the sketch and you should be able to make "offsets" for the transition. Universal Metals. Equivalent Duct Calculator (Round vs Rectangular) Square to Round Calculator. Friction Loss Calculator for Sheet Metal Ducts. Each is on a separate layer. Visit for free, full and secured software’s. The circle may be angled and offset from the rectangle. This will have triangles welded into the gaps and creating a sloping angled rectangle to round. Friction Loss Calculator for Flexible Ducts. A transition is also likely to be flat on top. Simply choose the type of square to round you wish to develop, enter the required outside dimensions and material thickness then press develop. The Square to Round pattern is a commonly used fitting with many variable dimensions and options. Visit for free, full and secured software’s. Draw the front elevation as shown in il- lustration #177A. Here we take you step by step in developing a Square to Round, just keep in mind "Practice makes perfect". Triangulation/Square to Round Square to Round Transition 13 1 0 c BAL FRONT VIEW Ba o c B2 HALF PATTERN illustration #177 — Square to Round Transition 1. Also, this part has to be done in Ordered mode, so transition to Ordered before you start sketching and save yourself some time. The developed pattern can then be marked onto the plate ready for cutting and shaping. Since the fitting below is a I used Swept Blend, but it is not a smooth transition. Rectangle to round Transition that may be offset and divided into any number of horizontal levels. Has anyone else encountered this or is it a display problem that can be fixed? The Square to Round pattern is a commonly used fitting and many variable dimensions and options. Transition from Circle to Square Tutorials People regularly ask how to go from a circle to a square and often the response is to suggest a plugin or hand stitch. Click the likes count to see who has liked a model and meet engineers with similar interests. If you are looking for the old stuff click here Sheetmetal Calculators Transition Open Box w/filter rack Elbow Radius Offset Centerline Square to Round You should have at least a default sheet metal template in your list of templates. We are committed to setting industry leading standards in all measures of business performance and customer service.