Filwel Products India Pvt. Ltd. Manufactures Nickel Base Alloy Hardfacing and Cladding Wires. Filwel Products India Pvt. Ltd. Manufactures Build-Up Wires, Thermal Spray Wires and Automatic Welding Systems. The Nickel Base Alloy Hardfacing and Cladding Wires is a cobalt-hardened nickel base alloy used particularly for surfacing of parts subjected to oxidation, corrosion and mechanical stresses at elevated temperatures. These wires are used for welding of tube extrusion mandrels, hot shear blades, extrusion tooling and forging dies.