BS4568 Galvanized Conduit Trade size 16,20,25,32,40,50,60,75.5,88 Material:carbon steel Threading ... ends of conduit Specificationsstandard:BS4568_1970 trade size:16,20,25,32,40,50,60,75.5,88.5,114all sizes are ... (+/-0.10)2019.7201.6(+/-0.15)2524.6251.6(+/-0.15)3231.6321.6(+/-0.15)4039.5401.6(+/-0.15)5049.5501 ... .6(+/-0.15)There are ...