Core advantages and technical parameters: Ultra-hard high-chrome alloy material: Utilizing Cr15-Cr28 high-chrome wear-resistant cast iron, which is cast under vacuum, the hardness is stable at HRC 60-65 degrees. It has extremely strong resistance to continuous erosion by projectiles, ensuring that the window edge remains round and undented over a long period. Precise angle adjustment: The scale is clear, and when combined with the base, it enables 360-degree rotation adjustment. By fine-tuning the position of the window through the directional sleeve, the ejection band can be precisely locked onto the workpiece surface, reducing unnecessary wear on the guard plate and increasing energy utilization by over 15%. Scientific structural design: The window edge is reinforced and thickened to effectively buffer the high-speed impact of projectiles, preventing cracking due to fatigue. The inner wall has high smoothness, reducing friction resistance, ensuring a more stable projectile ejection speed. Deep compatibility for multiple models: Precise CNC processing ensures a tight fit between the outer diameter and the ejection machine housing. Supports the domestication of international brand models, with size tolerances controlled at the micron level.