... .ISO9001:2008 3.a complete production equipment 4.We have our own testing equipment AISI 4140 steel ... bar 1. Grade: 4140 Steel Round Bar SAE4140,42CrMo4,1.7225 2. Specification: 50-500mm 3 ... like: cars accessies, home appliances, electronic equipment plastic mould Note:1. According to national ... piece, bar, etc. 3. Our company is equipped with roll equipment and can provide our ...