1.Galvanized z purlin design 2.Grade:Q235,Q345 3.Finish:Hot dip galvanized 4.Custom size available 5.High strength Galvanized z purlin design Specification Item NoSS009MaterialQ235,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 ...