Diseño y Fabricación

Design and Manufacture of Exterior Lighting and Street Lighting Poles and Columns

At HGH, we have a team of specialised technicians, with experience and masterful knowledge of the product, as well as the most advanced design and calculation programs, which ensure the possibility of creating and manufacturing any type and size of polecolumn or metal support, with the guarantee of quality and robustness demanded by the customer, situation and regulations.

Design Stages of Poles and Columns

The process of designing columns and poles takes place across three fundamental, sequential phases:

  • Prior consultation with the client, study of the image characteristics, efforts required, applicable regulations and legislation. Providing solutions in the form of sketches.
  • Preparation of plans, adjustment of pole and/or column parts using simulation and dimensional and functional tests. Construction of prototypes.
  • Technical project and approval by presentation to a Notified Body. Manufacturing of the product.

Pole and Column Factory

One of the key parts of HGH is the comprehensive management and control of the manufacturing process of the staff or column up until the delivery of the final product.

In addition, the galvanising process is carried out in our own plant. There, our products receive anti-corrosion treatment using hot-dip galvanisation.

Our facilities, methods and processes are designed for the current production level, optimising spaces, passageways and safety, in an area appropriate to the size of the manufactured product and with the latest technology used for the manufacture of poles and columns.

Our workforce is made up of highly qualified licensed technicians and multi-functional operators specialising in welding, bending, continuous sheet metal cutting, plasma cutting, oxyfuel cutting, punching, and specialised application work.

At HGH, our final product is the result of a complete manufacturing process, starting from a sheet metal coil.

We carefully control the raw material, compare the delivery note with the supplier order and check the quantity, model and quality of the material received.

The first step in the manufacturing process of metal supports consists of cross-cutting the coil and then cutting it lengthwise to obtain the trapezoids from which we are able to start to manufacture our products.

Then, in this order, the trapezoids are folded, welded and straightened and the doors to the junction box are opened.

Once the main body of the support has been manufactured, the components are welded together.

This is the end of the manufacturing process for the black columns; however, the poles will still have to pass through the bending machine, before being sent to the black finished product warehouse.

Manufacturing is supervised and certified, with controls and inspections at every step of the process. Once completed, the finished product is placed in the warehouse for black columns and poles, as they wait to be sent to be galvanised.

One of the keys to HGH quality is that the real thickness of the sheet used coincides with the nominal thickness. We don’t play with tolerances.

Galvanising Plant

We only use 99.995% pure, first generation zinc in our plant. We never use twice-melted zinc or other components that offer insufficient protection and that can promote rapid zinc oxidation.

Our hot-dip galvanising process is certified, and the products, once galvanised, comply with the regulations concerning UNE-EN ISO 1461:1999, UNE-EN ISO 14713: 1999 and UNE-EN-1179:1996.

The supports are completely immersed in a bath of molten zinc at a temperature of more than 450º, producing a perfect coating both inside and outside. 

Thanks to the zinc bath, the steel is protected against atmospheric agents, giving the support great durability and consistency of appearance over time. Currently there is no better external protection for steel against corrosion than hot-dip galvanizing of metal poles, columns and supports.

Once the poles or columns for street lighting have been manufactured in black, they are transferred to our galvanising plant and we begin the galvanising process, which consists of successively submerging the supports in continuously flowing baths for degreasing, pickling, preflux and flux before finally being submerged in molten zinc for the time necessary to obtain the correct layer thickness.