Filwel Products India Pvt. Ltd. Offers Buildup Wires for Rebuilding Tractor Rollers. Filwel Products India Pvt. Ltd. Manufactures Build-Up Wires, Thermal Spray Wires and Automatic Welding Systems. The Buildup Wires for Rebuilding Tractor Rollers comes under the brand name "CW - 300" is ideal for heavy multi-layer build up of worn-out crane wheels, and components exposed to metal-to-metal wear. The weld deposit is a low carbon, low alloy steel is usually employed with high preheat [250 deg. Celsius] and is ideally suited for rebuilding tractor rollers, idlers, chain pads and links.