1. Materials: Grey Casting Iron, Forging Steel, Alloy Steel. 2. Applicant: Locomotive using, using. 1. Materials: Grey Casting Iron, Forging Steel, Alloy Steel.2. Applicant: Locomotive using, using.3. Type: Wheel Brake Disc, Shaft Brake Disc4. Excellent Quality Control, Good Price. Fast Delivery!5. Could supply forging parts per customer drawing & specification!