Electrical Steel Conduit, Gi Slotted Channel, Gi Trunking manufacturer / supplier in China, offering BS4568 20mm 25mm 32mm HDG Malleable Iron Inspection Bends for Conduit, BS4568/En61386 Malleable Iron Box Twin H Through 4 Way HDG 32mm, BS4568/En61386 Malleable Iron U Branch 2 Way Circular Boxes Steel HDG 32mm and so on.