Vent holes are required for draining molten zinc from the material being galvanised.
The size and location of the vent holes are important in achieving the vent holes.
Different sections have differnt vent hole position requirements.
Vent holes are not just of closed profiles like SHS.
UBs UCs PFCs etc require vent holes at base plates, cap plates, stiffner plates.
Also if two SHS comes together cut the wall out.
Leave a Reply