VG 85011-6:1998
VG 85011-6:1998 Flanges On Castings Made Of Copper Tin Alloys - Part 6: Principles Of Design - Round Flanges For Outboard Fittings Dn 20 To Dn 300, Dn 20 To Dn 32 - Pn Up To 25, Dn 40 To Dn 150 - Pn Up To 16, Dn 175 To Dn 300 - Pn Up To 10