Cable Tray Tee Manufacturing Process

Cable tray tees are manufactured through precise cutting, forming, punching, and finishing processes to create durable, corrosion-resistant fittings that integrate seamlessly with cable tray systems.

Material Selection

The first step in manufacturing cable tray tees is selecting the appropriate material. Common materials include galvanized steel, stainless steel, aluminum, and fiberglass, chosen based on strength, corrosion resistance, and environmental conditions where the tray will be installed . Stainless steel is preferred for corrosive environments, while aluminum is lightweight and cost-effective for lighter cable loads.

Cutting and Shaping

Raw metal sheets or coils are cut to precise dimensions using laser cutting, shearing, or punching equipment . Accuracy is critical to ensure the tee fits correctly with straight sections and other fittings. The cut pieces are then shaped into strips or panels that will form the sides and base of the tee.

Forming and Bending

Cable tray tees require complex bends to create the branching structure. This is typically done using CNC press brakes or roll forming machines . Roll forming gradually shapes the metal into the desired profile, while press brakes handle secondary bends, flanges, and mounting brackets. Skilled operators calculate bend allowances and springback to maintain dimensional accuracy.

Punching and Perforation

Holes, slots, or knockouts are added using punch presses to allow for mounting, ventilation, and cable tie installation . These perforations are essential for airflow, reducing heat buildup, and providing attachment points for cables and accessories.

Welding and Assembly

For tees that require multiple panels, welding or mechanical fastening joins the components into a single, rigid structure . This ensures the tee can support the weight of cables and maintain structural integrity over time.

Surface Treatment and Finishing

After forming, tees undergo surface treatments such as degreasing, cleaning, galvanizing, or powder coating to enhance corrosion resistance and durability . Finishing also includes smoothing edges and inspecting for defects to ensure safety and compliance with standards.

Quality Control

Manufacturers perform dimensional checks, load testing, and visual inspections to ensure the tee meets industry standards and integrates seamlessly with ladder, perforated, or solid-bottom cable trays . Compliance with standards like NEMA VE 1, UL, and ASTM ensures reliability in commercial and industrial installations.

Integration with Cable Tray Systems

Cable tray tees are designed to connect with straight sections, bends, and other fittings, allowing flexible routing of electrical cables in complex layouts . Properly manufactured tees facilitate easy installation, maintenance, and future system expansion. In summary, the manufacturing of cable tray tees involves careful material selection, precision cutting, forming, punching, welding, and finishing, all guided by strict quality standards to produce durable, safe, and functional components for electrical cable management systems.