|AMERICAN SpiralWeld Pipe Company LLC.Vehicles Reflective Tape Supplier has awarded SMS group an
order covering the supply of a new Online Spiral Pipe Mill, to be installed in a
new greenfield plant .|
SMS group will be responsible for the engineering,
supply and supervision of erection and commissioning of a coil preparation stand
and a spiral pipe machine with submerged-arc welding. SMS group's PERFECT arc
technology enables energy savings of up to 30 percent compared to competitor
The new spiral-pipe production facility is scheduled to start
producing in 2020. Material grades up to X-70 can be processed. The pipes will
mainly be produced as water pipes according to AWWA (American Water Works
Association) standards. The new line will be designed to make pipes of more than
16 meters (55 feet) length with an outside diameter ranging from 610 to 3,658
millimeters (24 to 144 inches). The maximum wall thickness will be 25.4
millimeters (1. inch). The mill will operate in the so-called one-step (online)
process with submerged-arc welding from the inside and outside taking place
directly after spiral pipe forming.
Often the productivity of spiral pipe
welding systems is restricted by the welding speeds of submerged arc welding.
PERFECT arc? power sources allow an increase in productivity of up to 20
percent, while process stability remains constant. The systems operate with IGBT
(Insulated-Gate Bipolar Transistor) power electronics with fully digital welding
current control. No transformers are required. As a result, the welding machines
can attain an efficiency rate of over 90 percent. Compared to older welding
techniques, significant energy savings (up to 30 percent) are possible,
depending on the operating point.
This new plant will enable AMERICAN
SpiralWeld Pipe to expand its production by a very high tonnage of spiral-welded
steel pipes for the municipal water and wastewater transmission markets,
industrial, hydroelectric and power markets including large diameter fabrication
for treatment plants and pump stations.