... rock effect more W Steel Mat :TIGHTLOK W Steel Mat, also known as W Steel Mat, W Steel Strap, ... Our branded Tightlok Roof Mat can match the quality of international standard, and have characteristics as: ... 1. Raw material is high strength alloyed steel2. with very good strength and ... anti-bending propertyn We can supply Wall thickness: 2.5-6.0mm, Wide: 120-330mm, length: ...