Screw air compressor noise standard

Compressor air screw VSDs usually have noise levels ranging from 60 dB to 85 dB, depending on the factors mentioned above. When selecting a compressor, it's important to consider the acceptable noise level for your specific application. [pdf]

Drilling rig bail extension

All ALCO Bail Extensions are designed, manufactured and certified to API Spec 8C PSL 1 SR2 (-40). The ALCO API Spec 8C Bail Extensions are manufactured in North American out of solid forgings or plate. A. [pdf]