UL 213-2009 pdf download.Rubber Gasketed Fittings for Fire-Protection Service. 8 Metallic Materials 8.1 Specimen bars of metals used shall be prepared from the same heat or run of metal used in the fitting samples submitted
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UL 213-2009 pdf download.Rubber Gasketed Fittings for Fire-Protection Service. 8 Metallic Materials 8.1 Specimen bars of metals used shall be prepared from the same heat or run of metal used in the fitting samples submitted
Read more