21”/564mm Wax Cone (Conical Bolt Box)
Structural Steel Components
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21 /564mm Waxed Cone (Conical Bolt Box) Specification Details Product Code HD21 Material Waxed Cardboard Size 21 /564mm 21 (564mm) waxed cardboard cone / conical bolt box. For very deep foundations on heavy-duty structures. Creates an adjustment void for holding down bolt alignment. What Is a Wax Cone? A wax cone (also called a conical bolt box or void former) is a waxed cardboard cone used when setting holding down bolts into concrete foundations. It creates a conical void around the bolt, giving you the lateral adjustment needed to line up your steelwork accurately when the columns are erect
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