Profile: Hi Span Ltd. specializes in building materials. We are a BSEN ISO 9001; 2000 certified company. We offer a comprehensive range of Purlins, Rails, C-Channels, Eaves Beams, and associated accessories. Our sleeved Purlin system combines single and double span purlins with their joints staggered and sleeved. The provision of a sleeve at the unjointed connections over the penultimate support is required. Our sleeved rail system rails run past the faces of the columns. The section depth of the rail, plus the clearance required for a standard fixing cleat, together determine the minimum dimension from the column face to the inside of the vertical cladding. Our mezzanine floor beams are used within mezzanine floors. C-Channel sections can also be applied in many other circumstances such as door framing, roof trimming, window trimming, brickwork restraints, parapet rails, and side rails.