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Description / Abstract:
Chains of the type covered by this Standard were introduced late in
the nineteenth century. These
chains met with considerable success on material conveyors and
elevators. Manufacturers developed
and marketed many sizes and types in the following years.
In the 1920s, a working group from the producers of these chains was
formed to standardize them. In
1972, a subcommittee of American National Standards Committee B29 was
appointed with American Chain
Association members from the engineering steel chain industry to
expand and update the existing
standards.
The 1997 revision of this Standard incorporates the new definition of
Minimum Ultimate Tensile
Strength (M.U.T.S.), as well as updated sprocket symbols.
This revision was approved by the American National Standards
Institute on April 17, 1997.