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NFPA 484-2002 Standard For Combustible Metals attachment 国外标准
AWS QC1-2007 Standard for AWS certification of welding inspectors attachment 国外标准
AWS A2.4-2007 Standard symbols for welding,brazing,and nondestructive examination sixth edition attachment 国外标准
ASME B16.47-2017 Large Diameter Steel Flanges NPS 26 Through NPS 60 Metric/Inch Standard attachment 国外标准
ASTM E92-2016 Standard Test Methods for Vickers Hardness and Knoop Hardness of Metallic Materials attachment 国外标准
MSS SP-55-2011 Quality Standard for Steel Castings for Valves,Flanges,Fittings,and Other Piping Components. Visual... attachment 国外标准
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