DIN 909-1992
Hexagon head pipe plugs(d≤18mm)
DIN 909-1992
Hexagon head pipe plugs(d≥20mm)
CNS 4846-1982
Hexagon head pipe plugs with taper thread(d≤18mm)
CNS 4846-1982
Hexagon head pipe plugs with taper thread(d≥20mm)