Metal-Flex is a family owned manufacturing business since 1975 and has been dedicated to satisfying the needs for stainless steel four (4) wall interlock cable.

I. ORIGIN OF MATERIAL

Allegheny Ludlum
Wallingford, Connecticut
Manufactured in Philadelphia, PA U.S.A.




II. 304 STAINLESS STEEL

A. Armor consists of Flexible tube constructed of helical wound interlocking convolutions. The inside diameter cable armor shall be .170 minimum and the outside diameter shall be .295 minimum ( other sizes available) Per Request.



III. THE LENGTHS

A. When relaxed, is the length of free armor on a table.
B. When extended, is the length of extended armor, held at each end and 10 lbs. is applied.
C. The top of the convolution is flat and approximately parallel to the center line of the armor. When formed into a circular coil by hand the inside bend of the coiul diameter is 2 inches minimum.



IV. TENSILE TESTS

TEST ONE
The armor will not break nor the interlock open, at less than 380 lbs. tensile load when pulled at the rate of 6" per minute.

TEST TWO
By tying a single knot in the armor by forming through the loop, the armor will not break nor the interlock opens at a tensile load of less than 300 lbs.




V. U. BEND TEST

TEST 3
The armor formed into a U and pressed between two plates closing at the rate of 6" per minute. The plates shall be stopped when they are 1" apart. The final load is not less than 50 lbs.



VI. CRUSH TEST

TEST 4
Same as a bend test, but pressed until both sides of armor touch each side. The armor will not break nor the interlock open. Full load is applied .Dimensions between two plates are stopped when they are 9/16" apart.



VII. FLEXIBILITY TEST

TEST 5
Armor wrapped around a piece of 2" diameter then held vertically, armor will drop freely and straight. Armor fully extened or compressed longitude by hand, then relaesed, armor should return approximately to its original free length.



NOTE

Metal Flex armor passes all thest requirements set by Bell Laboratories per number A-226147 sheets 1 to 7 available upon request inspection of Western Electric per Mill numbers 0.426,0.427,4.430