A Grade - A steel surface is totally covered with remaining mil scale and little if any rust.
A Grade - A steel surface is totally covered with remaining mil scale and little if any rust.
B Grade - A steel surface beginning to rust and from which the mil scale has started to piece.
C Grade - A steel surface where mil scale is rusted or can be scratched off, yet little pitting is recognizable to the free eye. laser cleaning cost
D Grade - A steel surface with rusted mil scale, essential pitting crumbling noticeable to the free eye.


