Wiring Duct 1.Steel,ISO9001 2.Hot-Dipped Galvanization 3.16/20/25/32mm 4.BS4568,BN50086,BS31 standards Item:Wiring DuctMaterial:SteelFinish:Hot-dipped galvanization,Electro galvanizing,Black EnamelSize:20mm/25mm/32mmSteel electrical conduits,to BS4568 and EN50086 standards.Best quality and reasonable price.We can produce the steel electrical conduits according to your samples or drawings,also we ...