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Standard | HG/T20631-2009,HG/T20610-2009,GB/T4622.2-2008 ASMEB16.20,,JB/T90-1994,NB/T47025-2012,SH/T3407-1996 |
Material | Carbon steel, graphite |
Application | Pipeline, flange, valve, food, medicine, chemical, petroleum, ship |
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