... Combined Hook Dome Cover Malleable Iron,ISO9001 Hot-Dipped Galvanization,Black Enamel 20mm,25mm,32mm BS4568,BN50086 Standard Item:Combined Hook Dome ... dipped galvanization,Electro galvanizing,Black EnamelSize:20mm/25mm/32mmMalleable hook dome covers,to BS4568 and EN50086 standards.Best ... quality and reasonable price.We can produce the malleable hook dome covers according to your samples or drawings, ...