C Purlin	Z Purlin
Thickness	1.50mm to 3.00mm	1.50mm to 3.00mm
Height	100mm to 350mm	100mm to 350mm
Flange	40mm to 120mm	40mm to 120mm
Lip	10mm to 28mm	10mm to 28mm
Grade	≥Q 345	≥Q 345
Maximum Column Spacing	16m	16m
Hole Punch	3 different prepunched holes in one purlin	3 different prepunched holes in one purlin
Hole Size	φ8,φ10,φ12,φ14,φ16,φ18	φ8,φ10,φ12,φ14,φ16,φ18
	10*20,12*20,16*20,14*22,18*18,18*22	10*20,12*20,16*20,14*22,18*18,18*22
Surface Treatment	hot dipped galvanized	hot dipped galvanized

Features of Beststeel Purlins:

Adjustabel and exchangeab el C/Z purlins; automatic purlin fabrication line which has reached advanced international levelHigh tensile (usually over Q345)galvanized matrirals; hole site and aperture can be prepunched according to requirement; for Z purlins, we recommend continuous overlappingEasy to install; no need to check the purlin space; hot-galvanized materials save the trouble of maintenanceComparing to the ordinary truss, it is free of maintenance. 6-10 times longer service lifeMaximum column sapcing up to 16m, at leat 5%-8% average cost cheaper than ordinary truss purlin