Steel Round Bar Order customer Dia.110 x 250 MM. 1 Pc. = but when I received the item surface problems found.Are the air. The skin is dark and unusual, so customers send back the night-piece, check out. The audit found that the return, steel, iron, and black has a checked by measuring the strength of such areas are found to exceed the standard hardness values. Hardness of the workpiece is measured 40.3 ~ HRC 50.6. But the measured strength at another location, which is 31.8-30.1 HRC hardness standards, which cite standard Certificates of a hardness between 25 ~ 32 HRC.
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