Sandvik Materials Technology has expanded its manufacturing and stock programme for enhanced machinability stainless steel hollow bar to include sizes up to 420mm outside diameter. This means that Sandvik now has a range of over 100 different hollow bar sizes, many of which can be supplied from stock. The new sizes have all the improved machinability benefits of the Sanmac family of stainless steels without jeopardising key properties such as corrosion resistance and mechanical strength. They are aimed particularly at producers of mechanical components used in the manufacture of valves, pumps, flow meters, fittings, flanges and mechanical seals for the process industries.