How to distinguish between pipe gallery and pipe rack

The structure of pipe gallery should be steel structure and concrete structure, standing directly on the ground. Pipe supports directly support or guide pipelines. Many pipes can be supported on the pipe gallery, and there will be many pipe supports on the pipe gallery. I have pictures of pipe gallery and pipe rack, which I can show you. Only one picture can be uploaded. You can Baidu the picture. There are many pipe racks in the pipe gallery. Take a look and you will understand.