LEAF SPRING, AIR ARM, AIR SPRING Material: 50CrVA, Spe. 100*50 Loading Capacity: 32T ISO/TS16949:2009 1.NameAir Suspension beam spring2.standardDIN, ASTM,JIS,BS ... ,AS,ISO,GB,No truck leaf spring heavy duty nstandard bolt ... Asia, Mid-East, Euro, North-America, South-America and Africa. Air Beam spring for truck