... shoe will depend on material and condition of the third rail (steel, stainless-steel, )and the use, at the same ... ,of castiron or steel which will damage the patina and rail. Changsha Aobo Carbon Co.,Ltd (former Zhuzhou Tianfeng Electric Carbon ... mm²RH841.73349537RH84M62.101311065RH83M62.80711095RH85M63.404105105V2060M63.53.511390 Pantograph strips ,e-carbon , Pantograph strips for light rail and heavy ...