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BSEN12569-1999Industrialvalves–Valvesforchemicalandpetrochemicalprocessindustry–Requirementsandtests
BSEN1092-2-1997Flangesandtheirjoints.CircularflangesforpipesvalvesfittingsandaccessoriesPNdesignated.Castironflanges
BSEN1092-1-2007Flangesandtheirjoints–CircularflangesforpipesvalvesfittingsandaccessoriesPNdesignated–Part1Steelflanges
BSEN10055-1996Hotrolledsteelequalflangeteeswithradiusedrootandtoes.Dimensionsandtolerancesonshapeanddimensions