preco 2aIn order to protect concrete from corrosion caused by aggressive wastewater, bottom elements of the sewage chambers are fitted with PRECO inserts made of polyurethane reinforced with fibreglass. Sewage chambers with PRECO insert are offered as standard in diameters 1000-1500 mm. Upon the special order, up to 2000 mm diameter insert can be produced.

 

 

 

 

 

 

 

 preco 3a preco 4a preco 5a

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