Cover plates type GD for the fixing of pipe / tube clamps and hose clamps of the Twin Series according to DIN 3015, Part 2. Manufactured from steel with STAUFF zinc/nickel surface coating for reliable corrosion protection. Alternatively also available in stainless steel V2A 1.4301 / 1.4305 (AISI 304 / 303), V4A 1.4401 / 1.4571 (AISI 316 / 316 Ti) and aluminium EN AW-6060.