NQG-5.8 Abrasive Rail Saw NQG-5.8 lightweight abrasive rail saw is a railway maintenance tool. It not only cuts rails with high speed and high quality, but also has low wear cutting discs. It is locked by rail clamps. It has a simple structure, light weight, safety and easy movement. It is suitable for maintenance, repair of broken rails of seamless tracks, and cutting of steel rails in long rail welding factories.