Specifications 1.purlin aterial: color,zincalume,zinc 2. material:zinc275 ... 4.shape width Below is the brief introduction of C/Z purline(channel) for building use:1). Material: ... sheet, powder coated steel sheet.. 2). Specification: (A)--C Purline: thickness--1.50mm to 3.00mm; height--100mm ... at building site. If you need C/Z purline(channel), (c Shape steel,z Shape, u steel Shape)..please feel free to ...