How to read a pipe support table

Study the HG/T21629-99 \"Standard Drawings for Pipe Racks\" – it contains relevant information.

N653——should be the pipe rack number; 200203-5004～5008-040E-2——should be the project number and drawing number: LSS-5854-50-CS2——the pipeline number; it seems to be a low-pressure steam pipeline according to HG/T21629. The standard drawing for pipe racks is available in this forum. G7——is the pipe rack drawing number (page 7 of Volume 4); it refers to a horizontal pipe support. Type 1 within G7 is suitable for pipes with a diameter of DN65 or less. A2-1(50)——are U-bolts with angle steel (for pipes with a diameter of DN50). Type I——indicates a guide clamp; 1——may represent the quantity. 6.300——should be the ELⅠ value, meaning that the pipe rack is supported at a level of +6.300m. 6.969——should be the ELⅡ value, which represents the center height of the pipeline. 659——is the value of A (as shown in the G7 drawing); it refers to the vertical height of the angle steel of the pipe rack, which is 659. However, strictly speaking, there is a slight issue with this design, mainly related to G7, Type 1, which is only suitable for pipes with a diameter of DN65 or less. It uses equilateral angle steel with dimensions of 50×50×6, and the value of A should be less than or equal to 500! Vertical 659 is a bit longer. If it is a regular pipe without thermal stress, there is no major problem. But for low-pressure steam pipes, try not to take any risks! This post was last edited by Beiming Yu on 2007-12-23 14:23]

Thank you both for the explanations, XD. I checked it again and indeed that’s what it means.

Check the pipe rack and pipe pier design manuals as well as the standard pipe rack drawings!

I’m just working on pipeline supports! Thanks to the original poster!