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Ingrandimento immagineConcrete Overweighting by impingement is designed for the construction of underwater pipelines and carried out on pipes already protected with anticorrosion coating.
The thicknesses, the density of the cement mixture and the type of reinforcement may differ according to the characteristics of the pipe and of the laying conditions; our company supplies the technical assistance for the choice of the most suitable parameters for the construction of the Concrete Overweighting.

The pipe, coated with one of the different anticorrosion protections (polyethylene, purtar, bitumen, etc.), is placed on special trolleys and maintained in rotation. At this point, the cement mortar, cast from a hopper, is sprayed onto the pipe and wrapped together with the reinforcement net. The surface is then smoothed by brushes; if the Overweighting thickness requires a double or triple reinforcement netting, the procedure is repeated.
On request, on heavier thickness pipes, suitably spaced slots in the circumference can be cut to ease up the laying of the pipeline from the ship.

During the Concrete Overweighting operation, all production parameters are recorded and controlled, and the finished pipe is weighed as final step.
The pipes are then carefully moved to the curing yard and placed on sand dunes, where they must remain for at least 28 days, prior to despatching.

Ingrandimento immagineSize range

Diameter from 6” (168.3 mm) to 60” (1524 mm)
Length   from 8 m to 13.5 m

Specifications of the concrete material

Cement                                DIN 2614
Silica sand                            DIN 2614
Concrete density                  from 2200 to 3050 Kg/m3
Resistance to compression     from 200 to 350 Kg/cm2
(after 28 days curing)


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50 Years with RGS

The Riveco GeneralSider S.p.A. group is proud to announce its 50th anniversary of activity, achieved along a path full of exciting challenges towards the satisfaction of its wide customer base.

RGS group represents the natural evolution, across half a century of business activity, of the experience gained by three firms operating on the steel pipes & anti-corrosive coatings field; General Sider Italiana S.p.A, Riveco Rivestimenti Condotte S.p.A. and General Tex s.r.l sinergically became through time a unique reference point in the field.

The business activity, whose plants  employ around 200 workers between the italian regions of Abruzzo and Molise, is committed to operate systematically in order to satisfy a more and more demanding customer base in Italy and abroad. The frantic competition in the global market has always motivated strategic choices aimed at continuously improving its quality, so as to provide excellent results by obtained certifications and customers' approval. This is why the corporate mission is not by chance to « operate systemically and methodically, aiming at a continuous improvement, in order to be ready to seize future chances ».

Just like a few can do, RGS is a group that is able to mix the firmness of who has got a strong past with the dynamic enthusiasm of who is always gazing to the future.

Then again, we are celebrating 50 Years.