This standard covers 3-in. through
54-in. ductile-iron pipe centrifugally
cast in metal molds or sand-lined
molds for water or other liquids with
push-on joints and mechanical joints.
This standard may be used for pipe
with such other types of joints as may
be agreed upon at the time of purchase....
Back to A21.51-1971 (C151-71): American National Standard for Ductile-Iron Pipe, Centrifugally Cast in Metal Molds or Sand-Lined Molds, for Water or Other Liquids (PDF)
This standard covers 3-in. through
54-in. ductile-iron pipe centrifugally
cast in metal molds or sand-lined
molds for water or other liquids with
push-on joints and mechanical joints.
This standard may be used for pipe
with such other types of joints as may
be agreed upon at the time of purchase. Major revisions include the following: data for 30-in. and 36-in. pipe in
18-ft laying lengths, originally published
as Addendum A21.51a-1968,
have been added to this edition;
data for 54-in. pipe in 20-ft laying
lengths, originally published as
Addendum A21.51a-1968, have been
added to this edition; and,
standard thicknesses for Laying
Condition S have been added, this
laying condition involves special
construction methods that may be
used to obtain economy in thickness
for water pipe installed under deep
cover.