Deunydd: HSS
Maint (Dia * Ongl * Twll mewnol * Trwch): 35 * 55 * 13 * 10,35 * 60 * 13 * 10, 45 * 55 * 16 * 13,45 * 60 * 16 * 13,60 * 30 * 22 * 12,60*40*22*12,60*45*22*12,60*55*22*16,60*60*22*16,60*65*22*16,60*70*22*16, 60*75*22*20,60*80*22*20,60*85*22*20,60*90*22*20,75*30*22*12,–80*60*27*20
Bywyd gwasanaeth hir