01

Spray heating pipes efficiently in horticulture

With our spraying robot we quickly and efficiently spray the heating pipes in your greenhouses (pipe rail).
We do this in existing and new greenhouses. Spuiterij Geraerts has been doing this work at home and abroad since the year 2000 and we therefore have extensive experience in this. We spray with our own paint: Pipe Paint. This paint has a unique composition that ensures excellent adhesion. Even if the tube is not degreased, the paint will bite into the heating tube. With this patented painting process, we can spray 20 kilometers of pipe per day with one robot. We can work in existing greenhouses during a crop rotation.

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02

Advantages of Pipe Paint

We have developed our coatings in collaboration with a specialized manufacturer.
The advantages of our Pipe Paint and method at a glance:

  • Efficient application technique with which the pipes are painted in a short time
  • The tubes are painted in a high-quality, even way.
  • White-painted tubes give up to 50 percent more light reflection and ten percent more heat output.
  • As a result, the tube temperature can be up to approximately 3 ºC lower;
  • Pipe Paint is a primer and finishing layer in one, this ensures a high rust resistance of the heating pipes;
  • This tube paint provides very good adhesion and very fast drying. So you will be less bothered by harmful gases.
03

Preparation for spraying tubes

What to do before painting the pipes:
Existing greenhouses: Remove leaves and any rust or paint chips from the pipes. This preparation benefits the spraying result.

New greenhouses: Try to keep the pipes dry and clean before painting, possibly by covering them with plastic. Keeping it dry prevents any rust formation and sand sticking.

With electrostatic spraying, the pipes are provided with a layer of paint all around. Depending on the requirement, the pipe can be sprayed in a 1-layer system or 2-layer system.

04

Tips

See picture: these dripper hoses are hanging too close to the pipe. Make sure the drippers are inserted into the mats prior to spraying the heating tube. There must be at least 16 centimeters of free space between the concrete pile and the side of the pipe.
Remove bacon hooks.

05

Systems for painting heating pipes

• When painting in a 1-layer system, the pipes are sprayed with one layer of paint.
One layer is almost always sufficient for maintenance work.
• When painting in a 2-layer system, the tubes are sprayed once.
After drying, the whole is sprayed over with a second coat of paint. In any case, this gives the heating pipe a tighter end result.

The situations below are not ideal for spraying pipes, try to avoid them.

06

Tips

During spraying, spraying is carried out at a constant speed, which ensures an even layer thickness. The applied layer of paint ensures a better heat dissipation and a better light output of the tube. That benefits the crops. When spraying, the pipes should lie on the pipe rail supports and the ends of the pipe rail on the path. The new plastic for cultivation may already have been laid. During electrostatic spraying, there is a slight overspray on the plastic. If plastic is placed on the path, we spray the curves down to the path.