标准:
标准库
(20)
HG/T 20634-2009All-thread studs for pipe flange
HG/T 20634-2009Hexagon nuts for steel pipe with flange
HG/T 20634-2009Hexagon bolts for flange pipe
HG/T 20613-2009Bolting for use with stral pipe falanges-Hexagon head bolts
HG/T 20613-2009Bolting for use with stral pipe falanges-Hexagon head bolts
HG/T 20613-2009Hexagon bolts for pipe flange
HG/T 20613-2009Bolting for use with stral pipe falanges-Hexagon nuts,style 1
HG/T 20613-2009Bolting for use with stral pipe falanges-Hexagon nuts,style 1,with fine pitch thread
HG/T 20613-2009Bolting for use with stral pipe falanges-Hexagon nuts,style 2
HG/T 20613-2009Bolting for use with stral pipe falanges-Hexagon nuts,style 2,with fine pitch thread
HG/T 20613-2009Bolting for use with stral pipe falanges-Double end sutds
HG/T 20634-2009Hexagon nuts-Style 1
HG/T 21573.4-1995Type A spherical washers
HG/T 21573.4-1995Type B spherical washers
HG/T 21573.2-1995Type BT double end studs with hole-Type I
HG/T 21573.2-1995Type BT double end studs with hole-Type II
HG/T 21573.2-1995Type BT double end studs-Type III
HG/T 21573.2-1995Type BS double end studs with hole-Type I
HG/T 21573.2-1995Type BS double end studs with hole-Type II
HG/T 21573.2-1995Type BS double end studs-Type III