Today, DURO Metal can pride itself for meeting stringent standards in a global market for its manufacturing and technological innovations.
Hole Details
Duro Purlins and Duro Girts are pre-punched with
standard 18mmx22mm elongated or 14mm diameter holes
to fit M12 bolts. If greater strength bolts are
desired where stress may exceed the load threshold
of two M12 Grade 4.6 bolts, then M12 Grade 8.8 bolts
are recommended.