” U ” SECTION PURLINS
Material: Galvanized/Black iron
Preprinted steel Grade 350 Mpa
Blank Width are based on 3 mm thickness.
Dim “B” varies with blank width and Material thickness.
You can use unequal legs
Tolerances:BOW 1 mm per meter
CAMBER 1 mm per meter
TWIST 1 mm per meter
FLARE ±3 mm within 200 mm of each end