For the standard 'flange-jointed' design of the tower, Cooper and Turner possess full TUV Nord approval for the manufacture and supply of EN14399-4 products in hot-dip galvanized finish. Sizes range from M16 to M64.
Cooper and Turner are currently developing this range to include products up to 80mm. Cooper and Turner can also offer various special fastener assemblies to suit customer's design for other forms of tower (eg lattice). In addition, Cooper and Turner can manufacture and supply ASTM A490M bolts, ASTM A563M 10S nuts and ASTM F436M washer assemblies which can be supplied with zinc flake coatings in accordance with ISO10683.