Deviator Pipes

Raw Material

Grade S235 JRH Quality 2 steel pipe with inside seam removed is used as raw material in the manufacture of our tubes.

Our tubes, by being longitudinally welded and cold formed, are compliant to NF EN 10219 requirements.

This raw material is suitable for bending, bellmouthing and hot-dip galvanizing (Steel Cat. I - II). A 3.1 material certificate can be provided on demand.

Bending

The bending process enables a curvature of the deviator tube, corresponding to the desired deflection angle.

The bending guarantees the correct path for the cables. Its exactitude increases both the longevity of the sheaths and cables as well as the ease of implementation. Our highperforming machines limit the ovalisation of the tubes to within acceptable tolerances and this, for all diameters. Clearance between the pipe and the sheath must be superior or equal to 10 mm.

For a good operation, you must provide us with the radius to the neutral fiber of the tube.
f : Deflection
C : Chord
ID : Developed Length on neutral fiber
R : Bending Radius

Flaring

The flaring process is used to create a flare on one or both ends of a deviator saddle tube, at «concrete partitions». This flaring has a progressive radius with, contrary to cones, no weld seams

Our manufacturing process has many advantages, such as a continuous shape with no sharp edges or weld seams, which preserves both the sheath integrity and cable path.

Because of the absence of mechanical welding, the fabrication costs less.

Our cold forging control preserves the mechanical properties of deviator tubes. Our production is reliable and avoids the problem of welding breakage.

Thanks to this, we guarantee more reliable results, realized in less time.

Positioning

Two washers are welded to the tube in order to facilitate its installation on the construction site. By suspending it by these rings, the deviator will be positioned naturally in the desired orientation plane. Its marking plate will indicate the method of tube assembly as previously defined with the customer : plate position to a given pipe end and position on bottom or top surface in case of curved tubes.

We guarantee the delivery of an optimized product, ready to be installed and adjusted on the construction site. The angular marking, which defines the deflection angle tilt, will facilitate its installation.

Galvanisation

Hot dip galvanising ensures the deviator pipe corrosion protection. The galvanizing process offers the protective coating : adhesion, impermeability and increased mechanical resistance.

The EN ISO 1461 standard impose a minimum :
- 55 µm for a steel thickness between 1,5 et 3 mm
- 70 µm for a steel thickness between 3 et 6 mm
- 85 µm for steels thicker than 6 mm

Special Tubes

We can also meet your specific needs in the post-tensioning field, such as :
- Stainless steel
- Flange
- Clamps
- Fishtail anchors
- Tailor-made flarings
- Centering plugs
- Threadings
- Mechanized welding