TPT November 2009

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Tube M ills and Roll Forming Lines
November 2009 121 ›
T&H LEMONT has commissioned a new
dual capacity, quick change tube mill
system. This dual capacity mill is capable
of producing standard mechanical rounds
and hollow structural shapes for both small
and large sizes.
The dual capacity tube mill system was
developed by T&H Lemont in conjunction
with Searing Industries, USA. Searing
Industries approached T&H Lemont with
the need to increase production of a wide
range of structural products on a single
production platform. The dual capacity mill
allows for a greater range of production
sizes in a minimal amount of floor space.
In effect, the dual capacity mill gives a pipe
and tube producer the ability to produce a
range of pipe and tubing normally produced
from two different sized mills.
With a dual capacity mill, the entire entry
and exit equipment are designed to be
universal; as are the mill bases and drive
systems.
The “dual capacity” of this mill is realised
by two different (size) sets of quick change
subplates designed to mount on a single
mill base system while utilising a universal
drive system. One set of subplate mounted
driven stands (T&H Model WU35M-12)
was designed for producing “mother” tubes
from 1.250" to 5" with wall thickness from
0.083 to 0.25". The second set of subplates
(T&H Model WU60M-12) was designed to
produce “mother” tubes from 3.75" to 8"
diameter with wall thickness from 0.125"
to 0.5".
The distance between the stands
was optimised on each set of subplates
for the products produced. Each set of
subplates included three driven squaring
clusters to form the shapes. Production
was furthermore increased and change-
over times minimised by employing the
new T&H autoset automatic stand adjusting
system. This motorised, programmable
system allows the operator to electronically
dial in the roll stands for proven recipes of
individual product and gauge changes.
Additionally, this mill was designed to
be serviced by an overhead crane system
assisting in the change out of the subplates.
The subplates are held to the base by a
Dual capacity high-frequency quick-change
welded tube mill system is lauched to market
DALIAN Sage Group, China, has four
subsidiaries and one institution, specialising
in designing, developing and producing new
tech products, and engaged in designing and
manufacturing large metallurgy machinery.
With a design team of almost one
hundred middle and senior engineers, the
company manufactures pipe mills, cold-
rolled forming lines and stainless steel
welded pipe lines.
In 1995, Dalian Sage formed a joint
venture with a US company with more than
90 years’ history in manufacturing HF welded
Chinese manufacturer with US partnership
unveils new pipe mills and cold-rolled machines
equipment and cold-rolled forming steel
equipment. The equipment manufactured
by Dalian Sage is sold to most areas of
China, USA, Russia, Indonesia, Thailand
and other areas of Southeast Asia.
The company’s main production line
equipment includes ERW mill lines, cold-
forming mills, direct changing into square
and rectangular pipe mills, stainless
steel pipe mills, cross shear mills, pipe
processing finishing line equipment and
large diameter straight seam TIG welding
pipe mills. Individual machines include
uncoilers, levellers, shear and butt welders,
vertical/horizontal spiral accumulators,
computerised length and cutting machines,
pipe flatteners, end-facing and bevellers,
tension reducing machines, 4-roll hot sizing
machines, edge planers, and hydro testers
using backlash radial sealing technique,
satisfying API standards.
Dalian Sage Group – China
Fax: +86 411 39318111
Email:
Website:
quick release hydraulic clamping system,
which allows the subplates to be connected
rigidly and precisely to the mill base and,
when necessary, disconnected from the
base quickly and efficiently. “The increased
capacity of this new mill enhances our ability
to meet the needs of our customers and at
the same time keeps our plant overhead to a
minimum, keeping us extremely competitive
in these changing markets,” stated Lee
Searing, president of Searing Industries.
T&H Lemont – USA
Fax: +1 708 482 1802
Email:
Website:
 The T&H Lemont dual capacity tube mill