36
N
ovember
2014
New peeling
resistance tester
for pipe coatings
SELMERS BV, a supplier of multi-
layer pipe coating plants, has recently
completed the renewal of its peeling
resistance tester.
A peeling resistance tester (PRT) is
used in testing the adhesion strength
of a three-layer PE/PP coating system.
The PRT is considered a logical
device inside Selmers’ quality control
equipment
programme.
Over the years the improved
adhesion
strength
and
performance of pipe coating
materials has required a
complete reassessment of
the PRT. The results are
that it is now a more user-
friendly peeling device, capable of
handling higher peel strength forces
than ever before, eg handling forces up
to 2,500 Newton, up from 1,500 Newton
in previous years. At the same time
Selmers has managed to reduce the
weight of the peeling device by almost
40 per cent. The peeling device is in this
way much easier to handle on the pipe
by the quality engineer executing the
test.
The PRT is a peeling device with a
control unit, which comes in a sturdy
road case. The peeling device is placed
on the pipe for peeling the three-layer
coating from the pipe. When peeling a
strip of width 20-50mm off the coated
pipe, it may remain within the 120-
130mm cutback pipe end. The peeling
angle is maintained at a controlled
90° while having a 10 m/min velocity.
The control unit consists of a logical-
to-use touch panel, which is meant for
collecting and presenting data. From
the control unit, data can be transferred
to a secondary device via LAN or USB
connection. Although the PRT has a 220-
240 VAC, 50–60 Hz main connection,
the system can come optionally with a
rechargeable battery pack.
The peeling resistance tester – type
2,500 Newton – can be ordered with
optional wireless-LAN for easier data
collection on, for example, a laptop.
A printing device can also be ordered
which prints the test results directly.
Selmers BV
– The Netherlands
Email:
Website:
Clamshell for pipe cold cutting
A portable clamshell pipe cold cutting
machine for steel pipe cutting has been
developed by DWT in cooperation with
the European offshore industry.
A high metal removal rate, a large
adjustment range and an easy setup
are available with these clamshells.
The portable pipe cutter avoids any
heat-affected zone. Specially designed
for heavy wall steel pipes with high wall-
thickness in heavy-duty applications,
their high working speed and quick
readiness for use allow economic
manufacture.
The
portable
pipe
cutting
machines for the machining of pipes
on-site are versatile in application and
can perform many operations. They
are also designed for new steel pipe
grades like P91.
The portable pipe cutter is versatile in
application and can perform numerous
operations such as: radial severing
of pipes; simultaneous cutting and
bevelling; pipe end forming before
weld preparation; inside-turning of pipe
ends; and flange facing for repair of
flanges on-site.
The application range of themachines
is from 76mm to 1,219mm OD and for
wall thickness up to 100mm. The split
construction type portable steel pipe
cutter is easy to mount on assembled
pipelines.
Special applications like remote
control are available for limited access
in pipeline welding.
The portable pipe cold cutting machine
has a high metal removal rate, a large
adjustment range, is easy to handle and
has been constructed in a rugged and
compact way.
DWT GmbH
– Germany
Website:
Clamshell pipe cold cutting machine
Road case
and control
unit
Peeling device
Technology News
