China 50kg rail for sale Heavy Steel Rail Glory Rail can supply all kinds of steel rails, including light rail, heavy rail, we do 50kg rail for sale for more than 15 years, we sell all kinds heavy steel rail, crane rail with different standards and specifications. 50kg/m heavy steel rail are mostly used for the transportation of larger mine roadways and factory workshops, crane hoisting equipment, and the laying of special railway lines. Specification: Size: 50kg/m Length: 12m~25m or other length according to customers’ requirement Material: 50Mn, U71Mn Standard: GB2585-2007 Materials: 50Mn Mechanical Property Chemical Composition Yield strength Tensile strength Elongation Hardness C Si Mn S P Cr Ni Cu MPa kg/mm² MPa kg/mm² min HB ≤ ≤ ≤ ≤ ≤ ≥390 ≥40 ≥645 ≥66 13% 0.48-0.56 0.17-0.37 0.70-1.00 0.035 0.035 0.25 0.25 0.25 ………………………………………………………………………………………………… U71Mn Mechanical Property Chemical Composition Yield strength Tensile strength Elongation Hardness C Si Mn S P Cr Ni Cu M...