Flanged Nestable


Flanged Nestable Corrugated Steel Pipe (FNCSP) derived from Canada Culvert’s STEELCOR consists of half-round sections of CSP with external side flanges that are easily bolted together to form a circular CSP.  Originally developed in the early 1930’s to facilitate overseas shipping, sections can be nested into compact, easy-to-handle bundles allowing for economical transportation for long-haul distances, remote sites, or international destinations.


The steel corrugated sections are Galvanized (Z610) or Aluminized Type 2 for added durability in accordance with CSA G401, with corrugation profile of 68 x 13mm.  The corrugated sheets are fabricated in standard lengths with an effective laying of 610mm, with half-lengthed sections of 305mm.  The sheets are available in various thicknessess, including 1.6mm, 2.0mm, 2.8mm and 3.5mm to meet most structural design requirements.


Flanged Nestable CSP is used for culverts, storm sewers, drains, conveyor covers, casings, and utilidors.  This product is especially useful for installations around existing utility lines, under buildings, and can be used as an economical concrete form.

FNCSP is available in either Galvanized or Aluminized Type II coating.


Durable with long life The proper selection of coating and steel thickness enables CSP to meet a wide range service life requirements. Appropriate coating choices are determined after evaluating life cycle costs, environmental conditions, and abrasion severity. Our CSP products range from lightweight galvanized coatings such as our GALVANIZED CSP for temporary applications, to our premium coatings, such as Polycoat CSP with a 100 year life.  Coatings include:


Galvanized Z275  Is a light, 275g/m2 commercial galvanized coating suitable for short-term projects (three to 15 years).  This temporary corrosion protection is ideal for forestry or oil and gas applications where the CSP is removed at the project completion.  Z275 offers a substantial savings by reducing the zinc coating by more than half.


CANADA CULVERT’s Z275 coating is ideal for forestry roads that will be deactivated, temporary lease roads, construction site drainage, or temporary cribbing applications.


Galvanized Z610 The standard galvanized coating with a proven track record of 45 years in suitable applications.  Z610 galvanized (610g/m2) is a hot-dip zinc coating that forms a superior barrier over steel. Calcium attracted from naturally hard water can aid in providing additional protection as it develops mineral scale on the pipe surface. As the zinc coating corrodes slowly over time, its galvanic alloy protects the base steel as long as any zinc remains.


Aluminized Type II Type II coating offers the corrosion resistance and surface characteristics of aluminum with the strength, durability, and economy of corrugated steel pipe. This product is fabricated from steel coils coated in commercially pure aluminum. A passive aluminium oxide film forms rapidly on the Aluminized Type II coating, protecting STEELCOR against abrasion and corrosion in a wide variety of harsh adverse environments. The coating has a strong bond between metals and a uniform thickness on both inside and outside the pipe. Aluminized Type II coating can provide a 75-year service life for 1.6 mm steel when pH is between 5.0 and 9.0 and resistivity is greater than 1500 ohm-cm. STEELCOR with Aluminized Type II coating is ideal for storm sewer and drainage projects and is a durable and economical alternative to reinforced concrete pipe.


Polymer Laminate Polymer Laminated coating is for long-term applications. It’s a tough, heavy-gauge film at least 10-mils thick laminated to both the inside and outside surfaces of the Z610 galvanized corrugated steel pipe. STEELCOR with POLYMER LAMINATED is a great alternative to concrete and asphalt-coated pipe because it’s half the weight, making it easier to transport, handle, and install. Polymer Laminated STEELCOR has a proven protection record even in some of the most demanding applications. It has a long-term service life, which can last up to 100 years or more depending upon environment.