Straub Couplings available in Perth, Western Australia. Available in pipe sizes 26.9mm to 4064mm. A European brand of pipe coupling and repair clamp made in Switzerland that have been around for years. The product range includes Straub Open Flex, Straub Plast Grip, Straub Flex, Straub Fire Fence, Straub Metal Grip, Straub Grip L, and Straub Clamp. Each type of coupling has its own unique function and advantage for installation and operation.