... *50 Loading Capacity: 32T ISO/TS16949:2009 1.NameAir Suspension beam spring2.standardDIN, ASTM,JIS,BS,AS,ISO,GB,No truck ... .MaterialSpring Flat Bar, 60Si2Mn, SUP9, 50CrVA, SUP74.GradeGood quality5.FinishZinc plated,Black,Paint,etc6.SizeWidth:>=45mm, Thickness:>=5mm7.Supply abiltity2000 tons ... , Mid-East, Euro, North-America, South-America and Africa. Air Beam spring for truck