4,the angle is straight;
5,smoothness is good.
1 Manufactured from high tensile galvanised steel;
2 Pre-galvanised purlins will mean nil maintenance in most internal aplication;
3 Z purlin has one broad and one narrow flanges,making them suitable for lapping.This structure enables cost saving and improves the load capacity;
4 Pre-punched holes based on detail design;
5 Complete accesories package available;
6 Safe load tables are derived from theoretical engineering practices and enhanced by research in conjunction with the University of Sydney,Australia.