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 shows metal fabrication techniques, DIY cable tray projects, and tips for perfect bends and joints. Whether you are a DIY enthusiast, electrician, or metalworker, this tutorial will help you create cable tray elbows like a pro. The use and installation of cable trays. GRP-elbow 45° for cable tray KK, with unperforated side rails, with moulded connector, various dimensions, glass fiber reinforced polyester, pressed, RAL 7032, pebble grey Refer to the product sheets for more information on product details and compatibility. Class 1: Designed for use with NEMA Classes 12B and 12C cable trays. These. , is a welded wire-mesh cable management system made of high-strength steel wire. The selection of material and finish is a function of the environment in wh tant in a wide range. In need to create an elbow that starts at a right angle and that has the ability adopt the angle of the routing of the cable tray.