... is made of Q345A and Q295A low alloy steel.3, Type 120 control valve; KZW-A empty and load automatic adjust device ... ; derailment automatic brake device.4, NSW hand brake system.5, Type 17 coupler, which is made of grade E cast steel ... , and type MT-2 buffer are adopted.6, Chinese type K6 bogie.Loading Capacity (t)70Tare ...