The C-shaped & Z-shape purlines have excellent anti-bending property and are easy to install. Our product name: C sheet, C shape purlin, C purlin ... .Brief introduction:C shape purlin, Z shape purlin, H shape ... , high buildings, large-span bridges, gymnasiums, and portablehouses.Size of C shape purlins:1) No. 1 model:A) Size: 80 x ...