Why would you manufacture fully welded trolley bays? It is not if they get hit, but when they get hit! Modular Trolley Bays are easily repaired by our skilled tradesmen and usually at a low cost as it is usually only pipe damage. Modular Trolley Bays do not rust where they are welded as they are not welded! Modular Trolley Bays are easily expanded or modified, pulled down, re-designed and re-used. Currently used at some Bunnings, Masters, Coles, Woolworths and Foodland stores Australia wide.