45# Steel Plate Structural / Mounting Part (Wire EDM Notch + CNC + Tapping + Black Oxide + Laser Mar

This part is used for plate-type structural and mounting applications in automation equipment, machinery & equipment manufacturing, and tooling/fixtures. It is made from 45# steel with the process route: cutting → gantry milling for thickness → double-head milling for four sides → surface grinding to plate condition → wire EDM for the large notch → CNC machining for remaining features → tapping → black oxide → laser marking. Key dimensions are controlled to a minimum of 0.02 mm, while all other dimensions and technical requirements follow the drawing. Surface treatment is black oxide, followed by laser marking, per standard/drawing requirements. Sample lead time is approximately 7–10 days; lead time for mass production is subject to negotiation.