Special SteelChina D2, H11, 1.2343, 1.2344, 1.2379 D3 Hot Work Alloy Tool Mould Steel Round/Flat Bar, Find details about China Steel Flat Bar, D2 Cold Drawn Steel from D2, H11, 1.2343, 1.2344, 1.2379 D3 Hot Work Alloy Tool Mould Steel Round/Flat Bar