Fine Alloy Castings Pvt. Ltd. Supplies Had Field Manganese Steel. Fine Alloy Castings Pvt. Ltd. Is a group company of Fine Group of Companies and has achieved an ISO 9001:2000 certification. Had field Manganese Steel is used for Machine Tools, Cement Industry, Thermal Power Plants, Crushing & Mining Industry, Pumps & Valve Industry, Machinery Manufactures, and General Engineering. The range of Had Field Manganese Steel is from 10 kgs to 1000 kgs Single Piece Castings.