What is high-frequency welded pipe? What are the differences with steel pipes?
2020-11-20 09:49:09
What is high-frequency welded pipe? What are the differences with steel pipes? 1. Welded steel pipe for low-pressure fluid escort (GB/T3092-1993) is also called ordinary welded pipe, commonly known as black pipe. It is used to escort water, gas, air, oil, heating steam, etc
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