标准:
二级分类:
标准库
(8)
HG/T 20634-2009All-thread studs for pipe flange
HG/T 20613-2009Bolting for use with stral pipe falanges-Double end sutds
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