1.Z steel purlin 2.Material:Q235 or Q345 3.Finish:galvanise or painted 4.Custom size available 5.High strength Z steel purlinSpecification Item NoSS001MaterialQ235,Q345,G550FinishHot dip galvanised Thickness1.50 mm - 3.00mmHeight100 mm - 350 mmFlange40 mm - 120 mmLip10 mm - 28 mmMax Column Space16 mHole Punch:One Piece 3 different prepunched holeHole Size:φ8,φ10,φ12,φ14,φ16,φ18 10*20,12*20,16*20, ...