TPT May 2008

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Tube & Pipe Welding: Trends & Progress
M ay 2008 120 ›
Patented metal-cored wires to
reduce rework and cleanup
Hobart Brothers, USA, offers a range of
Tri-Mark® Metalloy Vantage™ and Metalloy
Vantage Ni1 gas-shielded metal-cored
wires. Designed to help lower overall
welding costs, the Vantage wires include
patented technology that reduces silicon
island formation. The wire produces weld
bead toe lines that are almost completely
free of silicon deposits.
The Vantage wire is ideal for single- or multi-
pass welding on carbon steel applications,
including those in the railcar, automotive,
heavy equipment manufacturing, and
general fabrication industries. The Vantage
Ni1 wire is designed for welding nickel-
molybdenum steel.
It particularly excels on applications
that require higher toughness when
joining HSLA (high strength low alloy) or
weathering steels where colour match is
not necessary.
Hobart Brothers – USA
Fax: +1 800 541 6607
Website:
Ltd to carry out weld overlay cladding on
Techlok connectors for projects of this type.
Mr Gary Walford of Vector explains, “We also
supplied 26″ and 12″ connectors to Qatargas
3 and 4 but we have never manufactured
anything as big as the 42″ connector before.
The sheer size of the connectors made this
cladding operation special. The fact that we
had to apply our usual quality standards to
such a large piece of equipment also meant
that it was a very technical project for us and
for Arc Energy.”
Also, due to the size and the tight
tolerances specified it was decided to
stress relieve the connectors after weld
overlay cladding. Even with items this
large, Arc Energy was able to carry out the
post weld heat treatment in one of its own
calibrated furnaces.
Arc Energy Resources – UK
Fax: +44 1453 823623
Email:
Website:
The weld overlay cladding services of Arc
Energy Resources, UK, were recently called
into action to apply a protective coating of
corrosion resistant alloy to eight of what are
claimed to be the world’s largest pipeline
clamp connectors.
Vector International supplied these clamp
connectors to two of the world’s largest
LNG developments – Qatargas 3 and
Qatargas 4. Combined, they are expected
to generate approximately 2.8 billion
cubic feet per day of natural gas. Among
the equipment specified for two wellhead
platforms, are hundreds of Techlok clamp
connectors from Vector International.
The connectors were specified for being
compact, lightweight and leak-free in critical
applications. A number of these connectors
also needed the added protection of a
special alloy 625 corrosion proof protection,
which is applied by weld overlay cladding.
For many years, Vector International has
used the expertise of Arc Energy Resources
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Tel: +44 1926 334137
Email:
Web:
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Weld overlay cladding protection for
clamp connectors
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