GB/T 13807.2-2-2008
Type C and Type SW double end studs(d≥64mm)-Table 2
GB/T 9125.1-2020
Fasteners for steel pipe flange joints-Part 1:PN designated-Double end studs
GB/T 9125.1-2020
Fasteners for steel pipe flange joints-Part 1:PN designated-Double end studs(L≤2b)
GB/T 9125.1-2020
Fasteners for steel pipe flange joints-Part 1:PN designated-All thread studs for pipe flange
GB/T 15389-2025
Threaded rods-Type A
GB/T 15389-2025
Threaded rods-Type B
