air suspension beam spring BPW OE No:508213560 Dimension:100*48mm. No of leaf: 1 Weight: 30kg air suspension beam spring BPW 1.Nameair suspension beam spring BPW2.standardDIN, ASTM,JIS,BS,AS,ISO,GB,Nonstandard bolt(according to your order),etc3.MaterialSpring Flat Bar, 60Si2Mn, SUP9, 50CrVA, SUP74.GradeGood quality5.FinishZinc plated,Black,etc6.Size Width:>=45mm, Thickness:>=5mm7.Supply ...