Most of the time we do not see the pipes, as they are buried underground. They, however, are always present in our lives and are essential to ensure basic sanitation and many other important applications for people’s well-being.

Water mains and sanitary sewer outfalls require pipes with high mechanical and chemical resistance. Chemical compounds etching present in sanitary effluents is highly corrosive, while water mains require high pressure. These characteristics make FRP a 100% suitable product for this need, as its mechanical strength, corrosion and abrasion resistance are much superior when compared to other materials.

Petrofisa pipes are the perfect combination of materials and manufacturing processes, resulting in a product that combines the best and most advantageous characteristics of these materials. Over the years we have developed high cost/benefit FRP solutions such as pipes for Water Treatment Plants (WTP) and Sewage Treatment Plants (WWTP). Our products provide ease of handling and cost reduction in the construction of foundations for sanitation works.


Immune to corrosion

FRP (Fiberglass Reinforced Plastic) pipes are completely inert and resistant both internally and externally to any type of chemical corrosion, whether salt water, H2S, generic, galvanic, intergranular, or graphitic corrosion, elements that frequently affect metallic pipes.

Abrasion resistance

FRP is among the materials with the lowest roughness coefficients, which means that its completely smooth interior surface requires less energy for fluids to circulate, thus offering greater abrasion resistance than metallic pipes.

Synergistic effect of the corrosion-abrasion binomial

The fluid’s combined corrosive and abrasive actions create a devastating synergistic effect for the corrosion of metals. Fiberglass pipes, as they are immune to corrosion and have high resistance to abrasion, break the synergistic effect of this binomial, so harmful to metallic materials.

Resistance to elevated temperatures and weather

In fertigation applications, temperatures can vary greatly. We manufacture pipes with specific resins that provide greater durability in these conditions. The surface of the pipe is composed of a layer based on thermosetting resin added with an inhibitor of UV-A and UV-B rays, which gives the pipes excellent resistance to aging.

Mechanical resistance

The safety factor for internal pipe pressure is up to 4 times the rated pressure. A rated pressure (PN) pipe of 1.6 MPa (16 kgf/cm2 or 160 mca) is hydrostatically tested to burst pressure, which reaches about 64 kgf/cm2.

Lightweight and extremely durable

FRP pipes are a quarter the weight of steel and are 25% lighter than aluminium.

In terms of life cycle, composites can last more than 50 years without the need for maintenance.

Learn more about our line of products for Sanitation