... , BS4449,ASTM A615 ,KS 2.Grade:HRB335, HRB400. HRB400E,HRB500, GR460,GR40,GR60 KS-SD400 Threaded Steel 1.Standard:GB1499-98, BS4449,ASTM ... A615 ,KS 2.Grade:HRB335, HRB400. HRB400E,HRB500, GR460,GR40,GR60 ... .72 222.98 233.26 243.55 253.85 Threaded Steel