Dear Sir/Madam, Standard:JIS,AISI,DIN,ASTM,BS,GB Grade:50mn 71mn U71mn Rail Heigth:134mm 140mm 152mm Bottom Width:114mm 132mm Web Thickness:13mm 14.5mm 15.5mm Head Width:68mm 70mm Length:11m 12m 12.5m Type:Heavy Rail Application:Railway Rail Weight:38kg/m 43kg/m 50kg/m Secondary Or Not:Non-secondary Bolt Hole Diameter:22mm 24mm Application:mine,underground mine,coal mine,railway track Product name:steel rail,heavy rail,heavy steel rail,rail Material grade:50mn,71mn, U71mn Certificate:ISO9001,CE, ROHS, SGS, Key words:steel rail,heavy rail,heavy steel rail,rail Standard:GB2585-2007 Market:indonesia,Malaysia,Philipines,Peru,chile,Amercia original:China type:manufacturer size:38kg/m 43kg/m 50kg/m Show More