Softwood
crossties: These crossties are
normally produced with pinewood such as Ponderosa
Pine or Southern pine. These crossties
do not need incisions for its treatment. The most common ones are
7"x 8" x 8'.
Hardwood crossties: Mainly produced from Oaks and tropical mixed hardwoods. Incision is done by request. The most common ones are 7"x 9" x 8"6'.
Switch Ties:
Set
of Ties in different measures
Specially sized wood:
COMAPO can fulfill special requests with special specifications. All the products are impregnated with creosote through these different processes:
-
LOWRY PROCESS.
Consists of injecting under pressure the wood preserver followed by a vacuum cycle finalizing the impregnation process.
-
REUPING PROCESS.
This process consists of a pressure cycle without preservative at the beginning, followed by a pressure injection cycle and finishing the impregnation with a vacuum process. -
BETHEL PROCESS.
This method starts with an initial vacuum process without preservative followed by the injection of the preservative under pressure, and finalize it with a short vacuum cycle.
