C&Z&H-type steel connected by the simple support or the continue mode. Multi-specification and multi-varieties is workable so as to secondary framing system’s (the secondary framing system refers to pass the load to the primary framing structure, including roof, wall purlin and other combination component. ) performance achieves optimization. Generally the material is Q235 and Q345.

The new C/Z/H-type steel can replace the old channel steel, I-type steel, with strong light, convenient installation, compact connection, applicable to large, medium, small construction roofing, walling purlin.