TPT November 2007

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136 November/December 2007
Cutting, S awing & P rofiling Technology
Protem is the manufacturer of a range
of advanced machinery for tube cutting
and bevelling, and other operations such
as drilling, facing, threading, boring, core
drilling and stud removal. The company’s
equipment is often used for high-quality end
preparation before orbital welding of tubes.
There are a range of different pipe end
preparation methods for metal tube
and pipe. These methods vary from the
simplest, eg the flawed hacksaw and file
method, through grinding and flame/plasma
cutting, to the high-end of CNC production
machinery, which can turn out hundreds of
finished tubes or pipes per hour.
Dedicated end preparation machinery can
prove invaluable in certain areas. The first
is at the end of a tube or pipe production
line. A customised end preparation system,
matched to the speed of a line, can give the
manufacturer a better finish than a saw cut
end.
On occasion, end preparations have to be
created in an environment that precludes
normal methods. This may be underwater
or in an irradiated area, or possibly in a
situation where a human operator cannot
be employed due to inaccessibility or
danger to life. For such difficult applications
remote-control machines are needed.
In situations where it is not permitted to
touch the inside of the tube, for example
with an electrochemically polished tube,
portable machines employ special clamping
collets to grip the workpiece. Others might
use a system of jaws similar to a chuck.
For smaller sizes the collet system is the
optimal solution.
High quality range of
saw blades
SW Wil, Germany, is a market leader
in the technology of sawing and cutting
techniques. The company has one of
the most powerful and largest ranges
of circular saw blades to cut almost any
object or surface.
The company’s range includes HSS
blades from Ø 40-700mm, HSS-
segmental blades from Ø 400-
1,800mm, TCT-tipped blades from Ø
250-2,000mm, and friction blades from
Ø 300-2,000mm.
Highlights of the SW Wil range are
the SwissCut HR friction saw blades,
TCT blades and the new SwissCut
T, the world’s biggest solid HSS
(700mm).
SW Wil – Germany
Fax: +41 71 911 49 32
Email :
Website:
Cutting and bevelling prep for orbital tube welding
fi The CTA cutting and bevelling machine range
from Protem