GB/T 898-1988
Double end studs b1=1.25d-type A
GB/T 898-1988
Double end studs b1=1.25d-type B
GB/T 9125-2010
Fasteners for pipe flange joints—Double end studs—Commodity fastener
GB/T 9125-2010
Fasteners for pipe flange joints—All- thread studs for pipe flange
GB/T 9125-2010
Fasteners for pipe flange joints—Double end studs—Special fastener
GB/T 9125-2010
Fasteners for pipe flange joints—Double end studs—Commodity fastener L≤2b
GB/T 9125-2010
Fasteners for pipe flange joints—Double end studs—Special fastener L≤2b
GB/T 901-1988
Double end studs (clamping type)
GB/T 901-1988
Double end studs (clamping type)—L≤2b Non full thread
GB/T 897-1988
Double end studs—b1=1d—Type A
GB/T 897-1988
Double end studs—b1=1d—Type B
GB/T 899-1988
Double end studs b1=1.5d—Type A
GB/T 899-1988
Double end studs —b1=1.5d(Type B)
GB/T 900-1988
Double end studs b1=2d—Type A
GB/T 900-1988
Double end studs b1=2d—Type B
GB/T 15389-1994
Thread rods
GB/T 953-1988
Double end studs (clamping type)—Standard type
GB/T 953-1988
Double end studs(clamping type) -Elongated type
GB/T 33943-2017
Structural studs
GB/T 13807.2-1-2008
Type L Double end studs-Table 1