 
				For some sizes example with thickness tolerance
| 1 | Section Size (mm) | Tolerance | Section Size (mm) | Tolerance | Section Size (mm) | Tolerance | 
 | 
 | 
| Width≤50 | Width>50~60 | Width>60~70 | 
 | 
 | ||||
| Thickness | 6~8 | ±0.15 | 6~7 | ±0.15 | 6~7 | ±0.18 | 
 | 
 | 
| >8~12 | ±0.18 | >7~9 | ±0.18 | >7~12 | ±0.20 | 
 | 
 | |
| >12~20 | ±0.20 | >9~20 | ±0.20 | >12~20 | ±0.25 | 
 | 
 | |
| >20~30 | ±0.20 | >20~30 | ±0.25 | >20~30 | ±0.30 | 
 | 
 | |
| >30 | - | >30 | - | >30 | ±0.30 | 
 | 
 | |
| Width | ≤50 | ±0.55 | >50~60 | ±0.60 | >60~70 | ±0.75 | 
 | 
 | 
| 2 | Section Size (mm) | Tolerance | Section Size (mm) | Tolerance | Section Sze (mm) | Tolerance | Section Size (mm) | Tolerance | 
| Width>70~80 | Width>80~90 | Width>90~100 | Width>100 | |||||
| Thickness | 
 | 
 | 
 | 
 | 
 | 
 | 8~10 | ±0.20 | 
| 7~12 | ±0.20 | 7~12 | ±0.20 | 7~12 | ±0.20 | >10~12 | ±0.25 | |
| >12~20 | ±0.25 | >12~20 | ±0.25 | >12~20 | ±0.25 | >12~20 | ±0.30 | |
| >20~30 | ±0.30 | >20~30 | ±0.30 | >20~30 | ±0.30 | >20~30 | ±0.35 | |
| >30 | ±0.35 | >30 | ±0.35 | >30 | ±0.35 | >30 | ±0.40 | |
| Width | >70~80 | ±0.80 | >80~90 | ±0.80 | >90~100 | ±0.80 | >100 | ±1.0 | 
For some sizes example with thickness tolerance
| 1 | Section Size (mm) | Tolerance | Section Size (mm) | Tolerance | Section Size (mm) | Tolerance | 
 | 
 | 
| Width≤50 | Width>50~60 | Width>60~70 | 
 | 
 | ||||
| Thickness | 6~8 | ±0.15 | 6~7 | ±0.15 | 6~7 | ±0.18 | 
 | 
 | 
| >8~12 | ±0.18 | >7~9 | ±0.18 | >7~12 | ±0.20 | 
 | 
 | |
| >12~20 | ±0.20 | >9~20 | ±0.20 | >12~20 | ±0.25 | 
 | 
 | |
| >20~30 | ±0.20 | >20~30 | ±0.25 | >20~30 | ±0.30 | 
 | 
 | |
| >30 | - | >30 | - | >30 | ±0.30 | 
 | 
 | |
| Width | ≤50 | ±0.55 | >50~60 | ±0.60 | >60~70 | ±0.75 | 
 | 
 | 
| 2 | Section Size (mm) | Tolerance | Section Size (mm) | Tolerance | Section Sze (mm) | Tolerance | Section Size (mm) | Tolerance | 
| Width>70~80 | Width>80~90 | Width>90~100 | Width>100 | |||||
| Thickness | 
 | 
 | 
 | 
 | 
 | 
 | 8~10 | ±0.20 | 
| 7~12 | ±0.20 | 7~12 | ±0.20 | 7~12 | ±0.20 | >10~12 | ±0.25 | |
| >12~20 | ±0.25 | >12~20 | ±0.25 | >12~20 | ±0.25 | >12~20 | ±0.30 | |
| >20~30 | ±0.30 | >20~30 | ±0.30 | >20~30 | ±0.30 | >20~30 | ±0.35 | |
| >30 | ±0.35 | >30 | ±0.35 | >30 | ±0.35 | >30 | ±0.40 | |
| Width | >70~80 | ±0.80 | >80~90 | ±0.80 | >90~100 | ±0.80 | >100 | ±1.0 | 
