DIN 908-1992
Hexagon socket screw plugs
DIN 909-1992
Hexagon head pipe plugs(d≤18mm)
DIN 909-1992
Hexagon head pipe plugs(d≥20mm)
Q 615-1999
Slotted columnar fine thread plugs
DIN 906-1992
Metric hexagon socket pipe plugs
QC/T 377-1999
Slotted cylinder plug
Q 615-2012
Slotted columnar fine thread plugs
CNS 4846-1982
Hexagon head pipe plugs with taper thread(d≤18mm)
CNS 4846-1982
Hexagon head pipe plugs with taper thread(d≥20mm)
CNS 4847-1982
Hexagon socket pipe plugs with shoulder and parallel thread
CNS 4848-1982
Metric hexagon socket pipe plugs with taper thread
JB/ZQ4444-1997
Hexagon socket pipe plugs with shoulder and parallel thread
JB/ZQ4444-2006
Hexagon socket pipe plugs with shoulder and parallel thread
