Misure tubi in pollici Diametro pollici / inches mm 3/8" 16,75 1/2" 21,25 3/4" 26,75 1" 33,48 11/4" 42,25 11/2" 48,25 2" 60 21/2 76 3" 88,25 31/2 102 4" 114,3 41/2" 127 5" 139,7 51/2" 152 71/2 192