... ,43kg,50kg,60kg, 75kg Standard:GB2585-2007 Material:U71Mn,U71V,50Mn ,45Mn Length :12.5m-25m Brand: Ansteel Specification:38kg ... ,43kg,50kg,60kg,75kgStandard:GB2585-2007Material:U71Mn,U71V,50Mn,45Mn Length :12m,12.5mParamenters: For some non standard ... /8810286fax 0086 412 8851567cell 0086 15998088057SKYPE: ms.helen_xiyida U71Mn / 50Mn common heavy steel rail of GB standard from Helen