... Bead Material:aluminium, pvc, Carbon steel or stainless steel. Thickness:0.25-0.50mm Wing Width:20mm, 23mm, 25mm, 30mm Angle Bead ( Corner Bead ... 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, Carbon ...