... , advertising metal frame, glass curtain wall, color steel plate, light steel keel, gypsum version of the fixed and other industries ... steel color)Materialhigh-quanlity carbon steelWeight (kg/case)ST18ST25ST32ST38ST45ST50ST57ST6410.314.518.51113.214.716.618.8 PackageST18-ST32 :2,000pc/box,10 boxes ... /case.ST38-ST64: 1,000pc/box, 10 boxes/case