A-BEAM® is a concrete-filled steel beam developed by Anstar Oy for placement inside a floor system. Thanks to a powerful composite effect, long span lengths and modifiable space solutions can be achieved affordably. In addition to hollow-core slabs, the beam can also be used for supporting thin-shell slabs, composite slabs and cast-in-place concrete slabs. The composite structures can be designed up to fire resistance class R120 without any additional protection on the site.

The standard connection is the AEP® hidden bracket to a reinforced concrete column and the AEL hidden bracket to a composite column. A connection library has also been prepared for the beam for typical connections to various frame structures. The beam type selection and preliminary dimensioning of the composite structure are performed using the ABEAM quick dimensioning software, which is available for download on the Software page. Watch the A-BEAM® introduction video.









A-BEAM® and Anstar’s connection technology form part of the frame system, offering cost-efficiency and flexibility for construction.


Diagonal ties are used in concrete sandwich panels to connect the outer skin with the inner skin through the insulation layer. The ties transfer the self-weight and wind loads of the outer skin to the inner skin.

Fastening plates

Fastening plates are used on cast-in-place and prefabricated structures to provide a mounting surface for welding.

Suspension components

Anstar has developed bracket and support systems for efficient and affordable construction. The connection pieces are easy to install both at the prefabrication factory and on site.

Balcony connections

Balcony hinges are used to transfer horizontal forces from the balcony to the building frame. The hinged connection enables vertical movement.

Rebar bolts and anchor bolts

high-quality rebar and anchor bolts are responsibly made with recycled steel. There are two different basic types of bolts: ATP- ja AHP® rebar bolts and ALP® anchor bolts

AEP® hidden bracket

AEP® hidden brackets are used to fasten a concrete element beam or Anstar A-BEAM® to the side of a concrete element column, wall or another beam. 

AOK® support

The AOK® support is used in a hollow-core slab floor opening as the load-bearing structure for the end of the slab. The AOK® support has been granted a patent, which enables exclusive rights to the most cost-effective support in the market.

Column shoes

Column shoes are used in light- and heavy-duty column extension and foundation connections; wall shoes are used in the tension connections of stiffening wall and shaft elements, retaining walls and earth pressure walls that stiffen the building.

Rebar couplers

Rebar couplers are used for joining rebars with full tension capacity. The ends of bars to be joined are provided with threads, and the bars are joined using a coupler sleeve that transfers the force on the rebar across the connection.

Bracing connections

ADE® and ADK® bracing connections are designed for stabilising the concrete element frame. These connections
are used in the joints between concrete columns and stabilising steel bracings.


Jarmo Vaskelainen

Project Manager
+358 44 763 0990


Atte Nieminen

Sales Engineer
+358 44 761 6208


Markus Hopeakoski

Design Manager
+358 40 653 6509