1. Materials: Grey Casting Iron, Forging Steel, Alloy Steel. 2. Applicant: Locomotive using, Coach using. 1. Materials: Grey Casting Iron, Forging Steel, Alloy Steel.2. Applicant: Locomotive using, Coach using.3. Type: Wheel Brake Disc, Shaft Brake Disc5. Excellent Quality Control, Good Price. Fast Delivery!6. Could supply forging parts per customer drawing & specification!