Truss Purlins

Introduced from North America to China in 2004, Open's truss purlins are a key component of the Open Building System. For large-span projects exceeding 12 meters, Open offers an excellent solution named the "Roofpro" system.At present, the maximum span of our producible roof truss-style "Open Purlin Series" reaches 20 meters. According to design, the maximum industrial production span of the roof truss secondary beams can even reach up to 35 meters. Additionally, using steel truss roof purlins, as the top chord is made of cold-formed thin-walled steel, the color steel roofing panel can be directly fixed onto the truss without the need for additional purlins, greatly simplifying roof installation.