... 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 ... convenience at building site.If you need C/Z purline(channel), (c Shape steel,z Shape, u steel Shape)..please feel ... Weizhengheng Light steel color plate Co., Ltd DuoWei C & Z Purlin