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SCI® malleable iron pipe fittings conform to ASME B16.3 dimensions and pressure ratings. Unions conform to ASME B16.39, while bushings and plugs conform to ASM B16.14. All SCI® malleable iron fittings are tested for through wall porosity using an air under water process. Malleable iron Class 150 and Class 300 Pipe Fittings are UL Listed and FM Approved.