C and Z Purlins

Purlin System
Purlin systems include a main purlin and a secondary purlin. The main purlin is used to install the roof and outside wall column and beam. The secondary purlin fixes the roof sheet and wall panel to the structure. The most common types of purlins are C and Z purlins which are cold formed from galvanized iron sheet for maximum strength. Our C and Z Purlins provide you with strong and secure connections for your steel structured buildings.

(1) C type purlin
h-height, b-mid flange, a-small flange, t-thickness
A:C type purlin, B:Bolt, C:Flange beam
The specification and sectional featurs of C type purlin
Section code Size Weiqht Moment of inertia
mm kg /m crrf
h b c t Ix Iy
C80X40X20X2.0 80 40 20 2.0 3.14 37.90 9.62
C80X40X20X2.5 80 40 20 2. 5 3.93 46.28 11.60
C 100X50X20X2.0 100 50 20 2.0 3.77 73.91 17.59
C 100X50X20X2.5 100 50 20 2.5 4.71 90.65 21.35
C 120X50X20X2.0 120 50 20 2.0 4.08 113.12 18.76
C 120X50X20X2.5 120 50 20 2.5 5.10 139.00 22.77
C 140X50X20X2.0 140 50 20 2.0 4.40 154.03 18.56
C 140X50X20X2.5 140 50 20 2.5 5.50 186.78 22.11
C160X60X20X2.0 160 60 20 2.0 5.02 236.59 29.99
Section code Size Weiqht Moment of inertia
mm kg /m crrf
h b c t Ix Iy
C160X60X20X2.5 160 60 20 2.5 6.28 288.13 35.96
C180X70X20X2.0 180 70 20 2.0 5.65 343.93 45.18
C 180X70X20X2.5 180 70 20 2.5 7.07 420.20 54.42
C200X70X20X2.0 200 70 20 2.0 5.97 440.04 46.71
C200X70X20X2.5 200 70 20 2.5 7.46 538.21 56.27
C220X75X20X2.0 220 75 20 2.0 6.44 574.45 56.88
C220X75X20X2.5 220 75 20 2.5 8.05 703.76 68.66
C220X75X20X2.5 220 75 20 2.5 8.05 703.76 68.66
C250X75X20X2.5 250 75 20 2.5 8.64 952.33 71.31

Material:
Q235B high quality structure steel
Surface treatment: shot blasting Sa 2 1/2, the thickness of film: 60μm

(2) Z type purlin
h-height, b-mid flange, a-small flange, t-thickness
D:Z type purlin, E:Bolt, F:Flange beam
The specification and sectional featurs of Z type purlin
Section code Size Weiqht Moment of inertia
mm kg /m cm
h b c t Ix Iy
Z140X50X20X2.0 140 50 20 2.0 4.40 162.065 39.363
Z140X50X20X2.5 140 50 20 2.5 5.50 198.446 48.154
Z160X60X20X2.0 160 60 20 2.0 5.02 246.830 60.271
Z160X60X20X2.5 160 60 20 2.5 6.28 303.090 73.935
Z180X70X20X2.0 180 70 20 2.0 5.65 356.620 87.417
Z180X70X20X2.5 180 70 20 2.5 7.07 438.835 107.460
Z200X70X20X2.0 200 70 20 2.0 5.97 455.430 87.418
Z200X70X20X2.5 200 70 20 2.5 7.46 560.921 107.462

Material:
Q345B high quality and strength steel
Hot dip galvanized Z275(275g/m2)

Performance Feature
High strength steel, cooperate with cross-section optimization design and overlapping design, safe, light and easy installation.

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