Are there any standard requirements for the galvanizing thickness of cable ducts?
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There are requirements for the galvanizing layer of cable trays; it seems to need to be over 65um. But are there any requirements regarding the thickness of the galvanizing layer on pipes? I’ve never heard of it. If anyone knows, please let me know. Thank you
Galvanized pipes do not specify the coating thickness (in terms of the amount of zinc per square meter). Instead, the standard weight per unit length of the base material is multiplied by a coefficient to obtain the standard weight for galvanized pipes. (The coating on galvanized pipes is expressed in grams of zinc per square meter.) For details, refer to GBT 3091-2015 Welded steel pipes for low-pressure fluid transport.