bare packing or PVC cover packing,Please see the pictures in the Product Description
C Section purlin & Z Section purlin Product Description Features: 1) Manufactured from high tensile galvanized steel 2) Despotic C&Z section steel, Z section steel is roll-formed from galvanized steel, specification to be complete 3) Make from quality raw material,
a).Thickness:0.5mm to 4mm. b).Grade:Q235,Q345. c).Width:80mm to 300mm.
d).Height:40mm to 80mm e)Surface:Galvanized/prepaint/black steel
4) Pre-punched holes based on detail design 5) Complete accessories package available 6) C purlin, Z purlin and H beam are widely used in factory buildings, large-span bridges, gymnasiums and portable houses 7) C purlin may be used in single spans and continuous spans in multi-bay buildings 8) We can make adjustment to meet your inquiries as we can do many sizes