ALLMAN INDUSTRY provides a wide range of lifting accessories and safety
equipment. We supply all types of lifting equipment , besides of cranes , hoists , winches , plain & geared trolleys , lifting clamps , chain slings, shackles, slings
and lashings . We can also supply you good quality of steel wire ropes (
ungalvanized & galvanized ) and wire rope accessories .
Cable / Wire
Rope
Cable is the generic term that refers to constructions of wire rope
that fall into the category of aircraft cable. These constructions include 7 x 7
(seven groups of 1 x 7 strand) and 7 x 19 (seven groups of 1 x 19 strand)
respectively. "Aircraft cable" ranges in size from 1/32" to
3/8".
WIRE ROPE is technically the correct term for groups of strand
wrapped in a uniform helix around a core. Sizes over 3/8" are not
considered aircraft cable, they are wire rope. The constructions included in
wire rope are numerous, but the most common are 6 x 19 and 6 x 37 class wire
ropes. These descriptions of the construction fail to include the core as a part
of the primary number. Part of the reason for this is that the composition and
the construction of the cores in these wire ropes is so numerous, that it is
necessary to call out the outer construction of the wire rope and then describe
the core. Such as 6 x 19 fiber core, or 6 x 37 IWRC (Independent Wire Rope
Core). The terms CABLE and WIRE ROPE are synonymous for all intents and
purposes.
CORE
The core can be a variety of things, including:
Strand in many constructions or even a cable or wire rope. The core can also be
of a composition other than metal, such as polypropylene rope. Whatever the
construction or the composition of the core, it is the center member of the
cable or wire rope.
COMPOSITION
CARBON STEEL WIRE is available in
different grades, sometimes referred to as Plow Steel, Improved Plow Steel, or
even Extra Improved Plow Steel. Wire rope manufactured from uncoated wire is
commonly referred to as Bright. Bright wire rope is available in sizes 1/4 inch
and over.
GALVANIZED carbon steel wire is frequently used to manufacture
wire rope. Galvanized wire rope provides good corrosion protection in mild
environments. In smaller sizes (less than 1/4 inch) it is almost automatically
used when stainless steel is not specified.