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Rubolt AD - Russe

42, Treti Mart Str.7000 Russe, Bulgaria
Phone: (+359 82) 820 202 Fax: (+359 82) 820 200
E-mail: mail@rubolt.com
Web: www.rubolt.com

Lines of Business
Main manufacturer of fasteners in Bulgaria, 80 - year tradition in production of bolts, nuts, screws, rivets, studs, etc.., Production from polymer concrete: heavy type covers for street manholes; gratings for street run-offs; light type covers for pavement shafts; draining canals; products for the building industry (borders, door-sills and other)
116 000 BGN distributed in 116 000 shares with a nominal value of BGN 1 each.
Established 1924
Ownership Private joint stock company
Management Bodies General Assembly of the Shareholders
Board of Directors
Employees 12
Export 5%
Quality Management System


Product Lines


  Standard bolts
Anchor bolts

Screws for metal and wood :

  Standard screws Combined screws

Articles of polimerbeton



 Fittings manufactured by "Rubolt" JSC are manufactured by cold plastic deformation, characterized by accuracy parameters, high performance, ability to manufacture a wide range of complex products. Products obtained by this method are several times cheaper than traditional methods of chip-removal.

The nomenclature of the produced by "Rubolt" JSC main groups fasteners included: bolts, screws, nuts, screws, rivets, bolts, washers, special products - more than 1600 species with sizes from M4 to M12 mm.

Produced fasteners are black and with zinc coating, and acquired technologies allow their workmanship standards BDS, ISO, DIN, ANSI and GOST, as well as customer's drawings and technical requirements.

In year 2003 the company started production of components from polymer concrete: heavy type covers for street manholes; gratings for street run-offs; light type covers for pavement shafts; draining canals; products for the building industry (borders, door-sills and other) .

The polymer concrete is a modern material, combining the advantages of plastic, steel and concrete. Actually it is a composite material, got through filling of liquid unsaturated resin with inert filling agents with different granulometric structure. This composite material together with proper reinforcement has very good physics-chemical and mechanical indices:

  1. specific weight 1100 to 4000kg/cub.m;
  2. compressive strength – up to 150MPa;
  3. elasticity module – up to 3 x 104MPa;
  4. operation within wide temperature range (-50..+800C);
  5. wearing out stability and damper ability;
  6. stability to sun radiation;
  7. corrosion resistance ( salt, lye, acids)

The advantages of the polymer concrete products are the very good outlook, attractive price and the fact that they can not be used as scrap.

Each component has developed and tested appropriate reinforcement. For example for the heavy covers type “water and sewage” is used reinforcement with section d=12 mm and weight more than 11kg. The two components secure the strength of the products.

The products are manufactured according to the requirements of BDS and after inducing the European regulations as per EN 124. For every component of our production we have protocols for performed tests by independent authorized laboratories.

Since year 2003, due to the achieved high quality of the products, “RUBOLT”JSC won recognition as main supplier of covers and gratings for BTK JSC, Electricity Distribution Company, the different “Water and Sewage” companies. Presently on the territory of the country more than 20 000 covers and gratings are mounted, all produced by our company.

"Rubolt" JSC offers products manufactured by technology Solid Surface.

The material, achieved through the technology Solid Surface, is an excellent substitute of the natural granite, marble, onyx. Casting is done under vacuum, the material has solid structure, does not absorb water and grease, it is incombustible. Easy for maintenance. Comfortable for manufacturing boards for kitchen cupboards and sinks, sanitary places, public houses. It is also used for decorative facade and interior plates. Covers the test for thermo shock as per DIN EN 13 310.

In year 2005 we bought and induced the German production line for dosage and mixture of polymer concrete components. This equipment is unique for Bulgaria. The automatic line is controlled by computer, which grants the observation of production technology and gaining repeated result. The high productivity (12kg/min) enables us to offer fast fulfillment of orders. The used technology gives the opportunity to manufacture components, based on clients’ drawings and requirements. There is a possibility for range of different colours.Matrices, with which works are entirely our own production of "Rubolt" JSC. The company has trained staff allowing, if necessary to work in two shifts.