1) 18mm*240mm 2) Good quality, competitive price 3) DIN, ISO, AAR standard With the good quality, we have established good business friendship with Bombardier, Simens, etc. And we have already exported the springs for railway to many countries, such as Vietnam, Pakistan, Namibia, Venezuela, Burma, Thailand, Angola, Sudan, Australia, USA, etc.If you are interested, please feel free to contact us. ...