Outer pipe rack

There is no difference from within the device; it still involves sliding, guiding, fixing, and limiting. There are few platforms involved, and the format is relatively simple. No one can answer your second question: which type of support frame to use in which situation. . .

Outer pipe frames are often used in truss structures, in order to reduce the number of columns

For stress pipelines, supports are needed to reduce stress. For pipelines at normal temperatures that are relatively long, supports can also be installed to prevent excessive deformation of the pipes. Two fixtures must never be installed on a straight pipe without any displacement compensation.

Does this fall under the pipeline specialty?

I think those working on processes or piping should have a basic understanding of both.

Are you referring to pipe supports or conduit racks? The design of conduit racks depends on the number and height of the pipes to be installed. There are mainly the following types: First, steel structure conduit racks, which allow for easy control of the elevation of each layer; however, they are costly and require maintenance over time. Second, T-type conduit racks, suitable for installing a small number of pipes; they are inexpensive and easy to install. Third, pipe-pier type conduit racks, which are cost-effective and involve a single layer of installation, with elevations adjusted where necessary, such as across roads. Fourth, concrete conduit racks, which have a long construction period, make it difficult to control the elevation of each layer, but require little maintenance once the pipe supports are in place. Fifth, concrete pillars combined with steel beams, which combine the advantages of concrete conduit racks and fully steel structure conduit racks.