bifold door hardware make

A quick learner from closet says:
June 23, 2016
I am looking at bifold door hardware and I am wondering if some of the hardware is made out of aluminum. Like for example 23-114 , 23-112 , 23-139 , 23-135 , 23-506 . And I am wondering if this piece, 23-312 is made out of some sort of steel or not.
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Paul from SWISCO responded:
June 24, 2016
Hello! All of the bifold door hardware you mentioned are made of steel.
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Spring Loaded Top Pivot
23-112
$1.42
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Self-adjusting Bi-fold Top Roller Guide
23-114
$1.54
%alt%
Bottom Threaded Pivot
23-135
$1.13
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Door Aligner Pair
23-139
$1.26
%alt%
5' Bifold Door Track and Hardware Kit, 4 Panel
23-506
$30.26
%alt%
Pivot Bracket
23-312
$2.70
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