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Is it necessary to use a cross-grounding wire for the DN50 flange connection between the oil tank breather pipe and the oil tank?

2018-11-15View Original

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Is it necessary to use a cross-grounding wire for the DN50 flange connection between the breathing pipe of an underground chemical storage tank and the tank itself? Are there any relevant standards? Automatic control instruments
Reply #22018-11-15
How many bolts? Those with less than 5 bolts must be bridged

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