round bar AISI 4140 1.MOQ:5T 2.ISO9001:2008 3.a ... have our own testing equipment AISI 4140 steel bar 1. Grade: 4140 Steel Round Bar SAE4140,42CrMo4,1.7225 2. Specification: 50-500mm ... (ESR)steel forging materials, but also forging products of piece, bar, etc. 3. Our company is equipped with roll equipment and ... detailed specifications when inquire.We will reply to you ASAP. round bar AISI 4140