Pre-expansion: The process begins with the pre-expansion of EPS beads. The beads are fed into a pre-expander, where they are exposed to steam and heat.
Mechanical Structure :
a.high-strength square tube welded by tempering prevent form deformation . b.after sand-blasting,greatly improve corrosion performance and service life of equipment .
c.after sand-blasting ,anti-rust spray zinc-rich primer,rust greatly improve the performance and service life of equipment ..