... automobile, machinery, medical equipment, sport equipment, musical instrument etc.6) OEM orders are welcome.Features:1) main machines used: ... automobile, machinery, medical equipment, sport equipment, musical instrument etc.6) OEM orders are welcome. 1. Material: carbon steel; SS304 ... . Grades: SAE J429 Gr. 2, Gr5 , Gr.8, class 5, class 6, class 10, etc.3. Surface: plain, black, phosphate, zinc, ...