Ask for the method of marking pipe ends
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As shown in the figure above, to indicate the pipe diameter in a certain direction, it is necessary to fill in the corresponding pipe end table. What is indicated inside the blue circle are the components. Is the circle used to indicate the pipe diameter called a pipe end marking? No relevant standards could be found by searching on Baidu. There are many issues; please ask the forum members to explain them. One set of methods is sufficient; no standards are needed. There is a DWG file in the attachment; it would be easier to understand if the file could be modified in accordance with one’s own methods before being sent. Thank you so much! ①For example, in the vertical direction, there are five components from A1 to A5; should each component be labeled individually, or should the three different diameters in that direction be indicated? Are the three markings arranged in the order of the components from top to bottom, or based on the principle of proximity? ②Is it necessary to indicate the diameter change separately, and how should it be indicated? ③The two sections of pipe in the vertical direction of C1/C2 (with a pneumatic valve in between) have the same diameter; should the diameter for this direction be indicated only once, or does it need to be specified for both sections? ④For the horizontal directions of D1\D2, are both flexible connections and reducer elbows required to be indicated?
I specialize in piping; I’m not familiar with equipment matters, only what needs to be done in the piping field. For the piping discipline, it is sufficient to number each pipe connection and indicate its relative position; a table in the diagram showing the nominal diameter of each connection as well as its type of connection is all that is needed
Thank you, and also “each pipe outlet”. . Does it refer to the external connection ports of the equipment, or all the pipeline connections inside the equipment?
External pipe fitting. In the pipe outlet table, ports for instruments such as pressure gauges are marked as being designated by the instrumentation department, while ports for manholes and similar items are marked as being designated by the equipment department. By the way, I forgot to mention earlier that the pipe outlet gauge should also indicate the name of the outlet, such as material inlet, pressure gauge port, etc
Got it. Thank you very much:handshake