... 50#, B7.45# 3) Surface: plain (oil)2. Gauge apron 1) Used in 115RE, 132RE, 100RE, 133RE, ... 100RB railway products. 2) Specification: 6#, 10#, 14#, 20# 3) Raw material ... .e1817.e2055.e2056.e2009.e2001.e2006.PR401.PR309. 2) Raw material: 60Si2MnA7. Rail clip/Tension clamp ... 1) Type: SKL1, SKL3, SKL12, SKL14 2) Raw Material: 38Si7, 60Si2CrA 3) Surface: plain ( ...