Are cable tray brackets metal stamping parts?

the vast majority of cable tray fixing brackets are manufactured metal stamping parts, which are mass-produced through standard stamping processes including blanking, punching, bending, flanging and rib reinforcement. Only a small number of heavy-load special supports adopt cast or laser-cut welded structures, while conventional indoor and outdoor cable tray brackets rely entirely on cold stamping for mass manufacturing.

1. Main raw materials for stamped cable tray brackets

Galvanized cold rolled steel (SPGC): Most common for indoor power distribution cable trays, with built-in anti-rust zinc coating after stamping

Hot-dip galvanized steel stampings: For outdoor, chemical plant and coastal humid environments with high corrosion requirements

Stainless steel 304/316L stampings: Used in food factories, sewage workshops and marine engineering cable support systems

Aluminum alloy stamped brackets: Lightweight type for data center server cable trays

2. Standard stamping processes for cable tray brackets

Blanking: Cut the overall outline of the bracket from metal coil strips

Punching: Stamp mounting holes, wall fixing holes and cable tray locking holes

Multi-angle bending: Form L-type, Z-type, three-dimensional U-shaped support structures

Embossing reinforcing ribs: Stamp convex ribs on thin plates to improve rigidity without thickening raw materials

Flanging: Turn over hole edges to increase assembly screw locking strength and reduce burrs

High-volume orders adopt progressive stamping dies to complete all forming steps in one automated production line, greatly improving consistency and lowering unit cost compared with cutting and welding.

3. Common stamped cable tray bracket types

L-wall mounted single-side brackets

Z-type suspended overhead brackets

U-shaped double-sided load-bearing supports

Clamp-type cable tray fixing clips

Adjustable layered separation stamping brackets

Anti-seismic secondary stamping supports for building electrical engineering

4. Advantages of using stamping to make cable tray brackets

High dimensional consistency: Unified die forming ensures all brackets match cable tray installation dimensions without assembly deviation

High production efficiency: Continuous coil feeding realizes thousands of finished brackets per hour

Lightweight and high rigidity: Stamped reinforcing ribs avoid heavy thick steel plates, saving material cost

Complete anti-corrosion performance: Post-stamping galvanization, passivation or powder coating covers all surfaces and stamped cut edges

Low defect rate: No welding gaps or weld rust risks compared with welded brackets

5. Exceptional non-stamped cable tray supports

Only heavy-duty ultra-large load brackets for industrial heavy cable laying are not stamped parts:

Cast iron integrated supports

Thick steel plate laser cutting + full welding heavy supports

Extruded aluminum profile machined brackets

1. GBT National Standard Citation

GB/T 11253-2019, Cold rolled carbon steel sheets and strips[S]. Beijing: China Standards Press, 2019.

2. APA 7th Edition 

Liu, C., & Wang, F. (2024). Processing technology and application of stamped metal brackets for electrical cable trays. Construction and Building Materials, 401, 133102. 

3. MLA 9th Edition 

Liu, Chao, and Feng Wang. "Processing Technology and Application of Stamped Metal Brackets for Electrical Cable Trays." Construction and Building Materials, vol. 401, 2024, p. 133102,