Underground Construction - June 2019 - 37

REHABTECHNOLOGY
Rehab Method Protects Pipeline Seams from Corrosion-and Floats
For the rehabilitation of a drinking water pipeline in the district
of Aalen, 124 miles northeast of Munich, Germany, the DENSO
Group Germany protects weld seams from corrosion quickly
and efficiently using a new laying method that floats in water.
The drinking water pipeline is one of the region's main
arteries. One of the two steel pipelines, with a nominal
diameter of DN 1200, was restored for long-term use.
Water flows through two parallel tunnels over almost at
475 gallons per second.
For this method, the pipeline was first laid in the water. Just
10 minutes after applying the DENSOLEN-AS50 tape system
to the weld seam, the pipe was pushed into a tunnel flooded
with water. The pipeline was then drained four months later.
Direct flooding and extended operation in water are major challenges for field joint applications.
This unprecedented method overcame the challenges in the following ways:
* The three-ply DENSOLEN tapes fuse together very rapidly.
* A diffusion-resistant protective hose is quickly generated, with reliable performance,
even when permanently exposed to fluids.
* The single-tape system was applied in at least a three-layer wrapping using the engine-driven
DENSOMAT-11 application device.*
FOR MORE INFORMATION
DENSO Group Germany, +49-(0)214-2602-0, denso-group.com; dekotec.com/en/

SPI Joins VersaFlex Family of
Specialty Coatings Companies
Specialty Products Inc. (SPI), a Lakewood, Wash.,
premier manufacturer of spray-applied polyurea
elastomers, polyurethane foams and custom
plural component equipment, is now part of the
VersaFlex family of companies.
Bringing more than 45 years of experience
formulating high-performance solutions and
technical staff with combined total of 180 years of
expertise, SPI joins Raven Lining Systems, Milamar
Coatings and others as part of VersaFlex's growing
portfolio of specialty coating solutions across an
array of markets and industries.
Headquartered in Kansas City, VersaFlex is
an industry leader in 100-percent solids, pure
polyurea based technology, which is used in the
protection and repair of a wide variety of industrial,
commercial and maintenance environments. *
FOR MORE INFORMATION
VersaFlex Incorporated, (913) 321-9000,
versaflex.com
Specialty Products Inc., (800) 627-0773,
specialty-products.com

Just showing up on site isn't enough. We own, manage, and maintain a
large fleet of equipment with AEMP Certified Equipment Managers to avoid
slowdowns and increase overall productivity.

HORIZONTAL DIRECTIONAL DRILLING/DIRECT PIPE® SERVICES: River, road, and railroad crossings /
Shore approaches / Intersects / Installing steel, HDPE, and FPVC / Design/Build and EPC Services
Certified in Safety and Environment: OHSAS 18001:2007 and ISO 14001:2015.
www.mears.net

UConOnline.com | JUNE 2019

http://www.versaflex.com http://www.dekotec.com/en/ http://www.denso-group.com http://www.specialty-products.com http://www.mears.net http://www.UConOnline.com

Underground Construction - June 2019

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