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Question:

What kind of copper gate valve copper content standards, there are no national standards?

What kind of copper gate valve copper content standards, there are no national standards?

Answer:

Copper gate valves are made of brass and bronze, and the national standard does not require copper content.
Please refer to: GB/T12225-2005 "general purpose valve, copper alloy casting technical specification" and GB/T 15116-1994 "die casting copper alloy"
Usually copper alloy, rarely used pure copper, there are GB

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