So they're sound isolation headphones? They're good for reducing sound pressure by a few dB, but i wouldn't use them in an "obnoxiously loud" environment, where you need really good attenuation. I use over-the-ear hearing protection in my shop, and generally don't buy anything with less than -30dB attenuation, since i'm often sitting or standing in close proximity to my dust collectors, which are one of the loudest things in my shop.
You might also want to check with occupational health and safety standards, as i'm sure (no pun intended) that those types of nose isolation ear buds aren't rated for industrial use.
According to OSHA, your employer should be providing you with hearing protection anyway.