The traces of rolling oil remaining on the surface of the steel strip are in the shape of a comet, a spot, or a broom.
Oil stain
The surface of the steel strip has traces of lubricating oil, which is dark brown or brown.
Oil coke
Rolling oil forms a pale yellow or brownish-brown mark on the surface of the steel strip due to oxidation.
| Manufacturer | Thickness | Width | Length of plate | Inner diameter of coil |
| 0.3-2.5mm | 1000-1500mm | 1000-6000mmDC01/ ST12 | 508mm/610mmCS TYPE A/B/C | |
| Private factories | 0.14-0.9mm | 50/610/762/914mm |
Carbon steel cold steel coil thickness gauge and shape meter etc. This machine have high rigidity rolling mill which could produce ordinary carbon steel, high-carbon steel and alloy steel. The specification is 0.15~1.5mm x 1250mm.
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