I don't know what kind of work you do, but I've worked in factories and manufacturing my whole career and this isn't that unusual in my experience. I'd definitely be raising my pitchforks if you weren't provided water, breaks, and some methods of cooling (such as fans).

Worst I've ever had was in a paper mill. The dryers ran very hot and sometimes our job required getting really close to them. They were hot enough to burn, so long sleeves were required when near them. Easily had some 40+ °C days in there, but we had access to a cooled break room and allowed quite a lot of breaks.

Still, when we did have to work by those dryers, it was usually because the paper broke and caused big jams. That is a hell of a mess and has to be cleaned up as quickly as possible to get the machine making paper again. Let me tell you, wet paper is heavy. Hauling that shit down the length of the dryer alley, in 40+ heat, in mandatory sleeves and long pants... Some of the hardest work I've personally ever done.

Pay was great though.