... Galvanization,Black Enamel 3.20/25/32mm Item:Black Enamel Through Circular BoxMaterial:Malleable IronFinish:Hot-dipped galvanization,Electro galvanizing,Black ... 32mmTypes:1-way,2-way,3-way,4-wayBlack enamel through circular boxes,to BS4568 and EN50086 standards.Best quality ... and reasonable price.We can produce the black enamel through circular boxes according to your samples or drawings,also ...