In May of 2018, Ruihe plant started a business with SCJV from USA on the project of LA subway project. Ruihe is the only manufacturer to get the certificate of AC 157F-485 issued International Accreditation Service (IAS). Special concrete ties have been customized for this project that meet American industrial standard as well. This project is expected to be closed at the end of 2019.
Generally, IIIc sleeper is suitable for the ballasted track with a standard rail gauge of 1435 mm. It's used for radius ≥300 m of curve track and direct track and applies to steel rails of 60 Kg/m or 75 Kg/m. The fastener matched is Type V elastic strip.
IIIQaD is applicable to a standard track gauge of 1435 mm that's used as bridge sleeper specialized for ballasted track, with radius ≥350 m of curve track and direct track. The steel rails of 60 Kg/m or 75 Kg/m can be used for this sleeper.