... 20mm, 23mm, 25mm, 30mm Angle Bead ( Corner Bead )have a smooth round nose bead with diamond mesh wings for the ... hot dipped zinc coating or electro galvanizing.1)Angle Bead is used in plasterwork for outside (external) ... offer the following corner bead: Expanded Angle Bead;Perforated Angle Bead;Angle Bead with Reinforce Flange;Angle Bead with creased Reinforce Flange;Angle Bead Material: aluminium, pvc, ...