2 thoughts on “stony jewelry wholesale What does RRB400 mean?”
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custom name jewelry wholesale RRB reinforcement is the residual heat treatment band reinforcement. It is an English abbreviation of Remained-Heat-Treatment Ribbed-Steel Bar. There are RRB400 -that is, the residual heat treatment belt reinforcement with the strength level of 400MPa.
custom name jewelry wholesale RRB reinforcement is the residual heat treatment band reinforcement. It is an English abbreviation of Remained-Heat-Treatment Ribbed-Steel Bar. There are RRB400 -that is, the residual heat treatment belt reinforcement with the strength level of 400MPa.
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