Use a CNC punching machine for mounting holes, slots, louvers and repeated patterns; use a press brake for flanges, brackets, elbows, tees and reducers; use a fiber laser cutting machine or hydraulic shearing machine for blanks; and use custom molds and dies to keep repeated. Use a CNC punching machine for mounting holes, slots, louvers and repeated patterns; use a press brake for flanges, brackets, elbows, tees and reducers; use a fiber laser cutting machine or hydraulic shearing machine for blanks; and use custom molds and dies to keep repeated. Wire mesh cable trays are widely used in modern electrical wiring systems due to their open structure, excellent ventilation, and ease of installation. Compared to ladder or solid-bottom trays, they are more flexible and better suited for complex environments. This article provides an in-depth. This manual is designed to guide workers through the detailed production process of ladder cable trays, including the manufacture of horizontal elbows, tees, crosses, reducing bends, and vertical bends, with emphasis on precision, safety, and quality control. This video Professional Cable Tray Elbow Making | Metal Fabrication Tutorial Learn how to make cable tray elbows professionally with step-by-step. Here is the comprehensive, industry-standard cable tray manufacturing process and step-by-step production flow that guarantees high-performance electrical containment systems. Before diving into the machinery, it is important to understand why the production flow matters. Determine the angle and required radius size of the elbow, and choose the appropriate elbow type based on these parameters, such as 90 degree elbow, 45 degree elbow, etc.