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Hot-rolling Pure iron plate/sheets/coils Tolerance GB/T8164-93 | ||||
Width (mm) | Thickness (mm) | Thickness Tolerance (mm) | ||
50~600 | 1.8/2.0 /2.2 | +/-0.18 | ||
2.5/2.8/3.0 | +/-0.20 | |||
3.2/3.5/3.8/4.0 | +/-0.25 | |||
4.2/4.5/4.8/5.0/5.5 | +/-0.29 | |||
6.0/6.5/7.0 | +/-0.32 | |||
7.5/8.0 | +/-0.39 | |||
Process | Width (mm) | Width Tolerance (mm) | ||
Hot-rolling, side cut | 50~200 | +/-1.0 | ||
Hot-rolling, side cut | 200~300 | +/-1.0 | ||
Hot-rolling, side cut | 300~600 | +/-1.0 | ||
Hot -rolling, side rough | 50~200 | +/-1.5 | ||
Hot -rolling, side rough | 200~300 | +/-1.8 | ||
Hot -rolling, side rough | 300~1800 | negotiate | ||
Cold-rolling Pure iron plate/sheets/coils Tolerance GB/T8164-93 | ||||
Process | Thickness (mm) | Thickness Tolerance (mm) | ||
Cold-rolling | 0.5 | +/- 0.06 | ||
Cold-rolling | 0.6 | +/-0.07 | ||
Cold-rolling | 0.8 | +/-0.08 | ||
Cold-rolling | 1.0 | +/-0.09 | ||
Cold-rolling | 1.2 | +/-0.11 | ||
Cold-rolling | 1.4 | +/-0.12 | ||
Cold-rolling | 1.5 | +/-0.13 | ||
Process | Width (mm) | Width Tolerance (mm) | ||
Cold-rolling, side cut | ≦250 | +/-0.5 | ||
Cold-rolling, side cut | >250~600 | +/-0.8 | ||
Cold-rolling, side rough | 50~600 | +3/-2 | ||
Cold-rolling, side rough | >600~1250 | negotiate | ||
Grade | Chemical Composition % less than | ||||||||
C | Si | Mn | P | S | |||||
DT4、DT4A/E/C | 0.01 | 0.1 | 0.25 | 0.015 | 0.01 | ||||
Al | Ti | Cr | Ni | Cu | |||||
DT4、DT4A/E/C | 0.020∽0.80 | 0.02 | 0.1 | 0.05 | 0.05 | ||||





















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