Software for creation of pipe classes and mechanical calculation of piping components. Read more ...


Software for the design and mechanical calculation of pressure vessels and heat exchangers. Read More ...


The presentation shows the calculation of a standard piping flange in the VES application. Read more ...

The tube sheet layout tool now also shows the OTL value.

Based upon request of our customers, the free engineering tool for the tube sheet layout now also shows the outer tube limit (OTL) value. Previously only the Outline Tubes value was shown. This value is the sum of all tube outlines together and can be used to calculated the heat transfer area (=outline tubes * number of tubes).

The OTL is the diameter by encircling the outermost tube in the tube layout from the center of the heat exchanger. The OTL is used for the design and calculation of a tubesheet. For example: it will determine the clearance between the outer tubes and the internal diameter of the shell.

If you have suggestions for the free engineering tools please let us know!

Piping Design

Advanced Piping Design book from Gulf Publishing Company for which Red-Bag provided the co-author.

Overview of Library

The Library section of the Red-Bag website contains information for the process industry. Read more ...


Preferably use the e-mail form for your first contact. Click here ...


InIPED, provider of choice for high quality training. Read more ...

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