This standard specifies the requirements, sampling, test methods, classification and marking of rolled straight threaded steel bar connection joints. This standard is applicable to various forms of steel bar connection joints using HRB335, HRB400 and RRB400 steel bars for concrete structures (which can be directly rolled or processed in advance) and finally rolled to form straight threads.
JG 163-2004 history
2013JG/T 163-2013 Couplers for rebar mechanical splicing
2004JG 163-2004 Rolled parallel thread splicing of rebars
JG 163-2004 Rolled parallel thread splicing of rebars was changed to JG/T 163-2013 Couplers for rebar mechanical splicing.