*LEAD TIME OF 2 WEEKS FOR PURLIN ROLLING*
Purlins can be used as structural steel in light weight buildings, but must be used in accordance with a design certified by an engineer. Selection of the correct coating weight is critical when specifying purlins. Z350 coating is suited to many applications as long as it is not a highly corrosive environment. For high corrosive environments specify Z450 and consider other corrosion protection measures, such as powder coating.