ball and socket joint manufacturer

huangyhg

ball and socket joint manufacturer?
does anyone know of a manufacturer of heavy duty ball and socket joints that are suitable for outdoor use?  i have recently seen them used on a relatively low key pedestrian bridge and couldnt imagine that they were specially machined just for that.
we want to use them top and bottom of a column to remove the moments in the column, and to allow thermal expansion of the supported structure. thanks.
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my car has some on the suspension arm ends.  would these be large enough?