Introduction
Steel lockers are a staple in workplaces, schools, gyms, and industrial settings across the UK, offering durability, security, and practicality. But have you ever wondered how these essential storage units are manufactured?
This blog takes you through the step-by-step manufacturing process of steel lockers in the UK, covering everything from raw material selection to final assembly.
1. Raw Material Selection
The process begins with selecting high-quality cold-rolled steel sheets. Cold-rolled steel is preferred because it:
Steel sheets typically come in thicknesses between 0.7mm to 1.2mm, depending on the intended use and security level required.
2. Sheet Metal Cutting & Shaping
Once the steel sheets are sourced, they go through a cutting process using advanced machinery such as: ✔ Laser Cutters – Provide precise and clean cuts for locker panels ✔ CNC Punching Machines – Create ventilation holes, key slots, and fixing points ✔ Shearing Machines – Cut large steel sheets into required locker dimensions
The locker components are then shaped using press brakes, bending the metal into door panels, sidewalls, and back panels.
3. Welding & Assembly
After cutting and shaping, the locker components are assembled:
Reinforcements are added in high-stress areas, such as hinges and locking mechanisms, to enhance durability.
4. Surface Treatment & Powder Coating
Steel lockers need to be protected against corrosion, scratches, and wear. This is achieved through a multi-step surface treatment process:
4.1. Pre-Treatment
Before coating, steel panels undergo: ✔ Degreasing & Cleaning – Removes oil, dirt, and contaminants ✔ Phosphating or Galvanisation – Enhances rust resistance ✔ Drying – Ensures a clean surface for coating application
4.2. Powder Coating Process
A powder coating finish is applied using an electrostatic spray gun, which attracts the powder particles to the steel surface. The coated panels are then baked in an industrial curing oven at temperatures up to 200°C, creating a smooth, durable, and scratch-resistant finish.
Common locker colours include:
5. Installation of Locks & Accessories
Once painted, locker doors and panels move to the final assembly line, where they are fitted with: ✔ Locking Mechanisms – Key locks, combination locks, RFID locks, or padlock hasps ✔ Hinges & Door Reinforcements – Ensures smooth opening/closing and long-term durability ✔ Ventilation Slots – Improves airflow inside lockers to prevent odours ✔ Shelves & Coat Hooks – For added functionality in personal or workplace storage
6. Quality Control & Testing
Before being shipped, each locker undergoes strict quality control checks to ensure:
Many UK manufacturers follow BS EN 16121 & BS EN 16122 standards, which ensure durability and structural integrity for heavy-use furniture.
7. Packaging & Distribution
After passing quality checks, lockers are: ✔ Flat-packed for easy transportation and on-site assembly ✔ Pre-assembled for quick installation upon delivery ✔ Custom-branded for corporate clients
They are then shipped to schools, gyms, offices, warehouses, and public facilities across the UK.
Conclusion: A Perfect Blend of Strength & Craftsmanship
The manufacturing of steel lockers in the UK is a meticulous process that ensures each unit is strong, secure, and built to last. By combining cutting-edge machinery with expert craftsmanship, British manufacturers produce lockers that meet the highest industry standards.
If you’re looking for high-quality steel lockers, contact Lockertek, the UK’s leading locker specialist, for expert advice and customised solutions!
