If you want to make design with various type of pipes I need that functions :
1. welding pipes - to have possibility to use elbows - not only 90, 45°but 15, 30°- generally all types of angle
2. to have possibility to use style pipes with insulations - various types of material, thickness
3. to simplify creation of piping runs, copying them for another purpose
4. to create automatically isometric design of piping runs
5. to have possibility to use supporting elements, fastening, support of physics for designing of fastening elements
6. to use I-logic for piping