Chain Locks for Roller Doors and Shutters Australian Family-owned business, Swift Metal Services Pty Ltd, have expanded their range of Chain Locks for Roller Door installers and Roller Shutter manufacturers. Swift Chain Locks are supplied with a highly durable hot dip galvanised finish. In areas such as coastal boat sheds or chemical factories, where corrosion maybe extreme or in 316 Stainless Steel for maximum corrosion resistance. Swift Metal Services Pty Ltd have provided Australian manufacturers of commercial and industrial roller shutters and doors, with unsurpassed quality, durability and continuity of supply, for broad array of componentry including, Door stops, Shoot bolts, Capstan Components, Wind lugs, Slat clips and U-Bolts, to name a few. Swift Metal Services are experts in repetition manufacturing and can produce custom chain locking mechanisms if the standard locks’ do not fit your style of door or shutter.