Usually, we are doing these works on all projects.
Usually, we are doing these works every projects
"on all" rather than "every". "on every project" would have the same meaning. "works" seems out of place to me, but I can't suggest an alternative without more context.
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"on all" rather than "every". "on every project" would have the same meaning.
"works" seems out of place to me, but I can't suggest an alternative without more context. Perhaps simply the singular is what you need--"this work on all projects".
Finally, the simple present rather than present continuous should probably be used here:
"Usually, we do these
We usually do this on [all projects / every project].
(The problem is not so much with 'all' vs 'every' but with other elements of your sentence.)
CJ