Stainless Steel Repair Clamps Our Range of Stainless Steel Repair Clamps are light weight, corrosion resistant and easy to handle. the combination of fixed studs and few moving parts aids the installation and provides less chance of parts falling into the trench. FS1 StyleFor Nominal Pipe Sizes 50mm - 300mm FS2 StyleFor Nominal Pipe Sizes 100mm - 400mm FS3 StyleFor Nominal Pipe Sizes 400mm - 750mm