Specification:38kg,43kg,50kg,60kg, 75kg Standard:GB2585-2007 Material:U71Mn,U71V,50Mn ,45Mn Length :12.5m ... Length :12m,12.5mParamenters: For some non standard heavy rail and fittings, we can design and produce on customer requirements. Welcome to contact ... me for more details and further quotation above mentioned products. Helen(sales manager) Anshan Xiyida ...