TPT July 2008

101 / 124

T ube & P ipe Mills and R ollforming L ines
99 J uly 2008 ›
T&H Lemont, USA, is a leading supplier of
tube mills, mill rolls, consumable tooling,
and related equipment. The company has
recently delivered a new dual capacity tube
mill system with quick-change capability.
This mill is designed to produce standard
mechanical rounds as well as hollow
structural shapes.
The dual capacity tube and pipe mill
systems were developed by T&H Lemont
to give tube and pipe producers a wide
ranging flexibility to handle demand for
just-in-time (JIT) deliveries of welded pipe
and tubular products. The dual capacity
mill design allows for a greater range of
production diameters using a minimal
amount of floor space.
In effect, the dual capacity mill system
gives a tube and pipe producer the ability to
produce a range of tube and pipe normally
produced on two different sized mills.
With a dual capacity mill, the entire set of
entry and exit equipment is designed to be
universal; as are the mill bases and drive
systems. The ‘dual capacity’ of a mill is
achieved by two different size sets of quick
change subplates designed to mount on a
single base system and utilize a universal
drive system.
In this most recent case, one set of
subplate mounted driven stands with 3.5″
shafts was designed for producing tubing
from 1.250″ to 5″, while a second set of
subplates with 6″ shafts was designed to
produce tubing from 2.5″ to 8″ diameter.
The distance between the stands was
optimized for the products manufactured
on each set of subplates. As with all
quick-change systems, one set of
subplates will be in production while the
second set of subplates is available for
changeover.
In addition, this mill was designed to utilize
an overhead crane system to assist in the
change out of the subplates. The subplates
are held to the base by a special hydraulic
clamping system. This allows the subplates
to be connected rigidly and precisely
to the mill base and when necessary,
disconnected from the base quickly and
efficiently.
T&H Lemont has recently signed a new
contract with a second customer to supply a
dual capacity, high frequency, quick change
welded pipe mill to produce API products.
The overall size range for this new mill will
be 0.75″ to 4.5″ diameters.
T&H Lemont is continuously exploring
new technologies and innovations to
reduce tube and pipe production costs,
expand capacity or capability and improve
productivity for the welded tube and pipe
and rollforming industries.
The company has provided the technology
to manufacture products such as
stainless steel hypodermic needles, MI
communication cables, flexible tubular
products, hi-strength welded and roll-formed
shapes and large diameter API pipe.
In addition to complete production
systems, T&H Lemont provides a variety
of components and services to the tube,
pipe and rollforming industries. Services
include tube and pipe roll design and
manufacturing, mill alignment and
operational consulting.
Components offered by T&H Lemont
include welders, cut-offs, entry equipment,
accumulators, pre-punch, post-punch,
seam orientation stands, weld boxes,
edge conditioner, bead scarfing systems,
straightening systems, single point
adjustment systems, dedimplers, blades,
jaws, roll shafts and other related
equipment.
T&H Lemont – USA
Fax: +1 708 482 1801
Email:
Website:
Dual capacity is
achieved by two
different size sets
of quick change
subplates designed
to mount on
a single
base system
❱
❱
 T&H Lemont are receiving an increasing number of orders for its new ‘dual capacity’ high frequency quick-
change tube mill
Meeting the demands of JIT delivery: quick-change
tube mills with ‘dual capacity’ flexibility