GLAVBOLGARSTROY is one of the Bulgarian companies that have created their own production line for the production of main beams for bridge structures made of pre-stressed reinforced concrete. The manufacturing base is located in the branch of the company in Samokov and has been operating since May 2014.

The beams are made using classical technology, proven throughout the years in whole Europe. The technology is German and the finished produce has all the necessary quality certificates.

All materials incorporated in the items are subject to constant control and comply with ORDER No РД-02-20-1 of 5 February 2015 on the conditions and rules for the incorporation of construction products in the construction works of the Republic of Bulgaria and arrive with quality certificates and declarations of conformity. Samples are taken from the concrete, which is checked several times until it reaches 80% strength. All samples are tested once in the laboratory in Samokov base and once in the Testing Laboratory of the Research Institute for Building Materials.