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Griffin Ductile Iron Pipe is a product which
has unique and desirable capabilities. This pipe, combining
the physical strength of mild steel with the longevity of
gray iron, also has the ability to flex under stress, making
it less vulnerable to abnormal conditions under which other
pipe materials may fail. Griffin Ductile Iron Pipe is centrifugally
cast in water-cooled metal molds. Rigid process control is
exercised throughout the manufacturing cycle. Casting is followed
by heat treatment in a continuous annealing oven after which
the pipe passes through the various finishing operations which
include hydrostatic testing, cleaning, cement lining, coating
and inspection.
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The extra strength and toughness of ductile
iron offers a great margin of safety against service failures
due to ground movement and beam stresses; and provides vastly
increased resistance to breakage caused by rough handling
during transportation and installation.
Qualities
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Long Life - inherent corrosion resistance assures
many years of service in most soils
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Greater Flow Capacity - oversized inside diameter
and high flow coefficient provide more flow than similar
sized substitute pipe products.
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Strength, Ductility and Toughness - capable
of withstanding high internal pressures-heavy external
loading-excellent resistance to impact and shock.
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Easy Tapping and Field Cutting - Sharp, clean,
strong threads are easily made in Griffin Ductile Iron
pipe, using standard tapping tools, even while the main
is under pressure. Griffin Ductile Iron pipe may be
cut in the field with a milling type cutter or an abrasive
saw and assembled with standard fittings.
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National Sanitation Foundation (NSF) - listing
under standard 61 applies to Griffin Ductile Iron Pipe
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