| specifications | φ6-φ12 | Φ16-φ25 | Φ30-φ50 | Φ55-φ100 | Φ105-φ1200 | 
| Length | 200-2000 | 200-3000 | 200-5000 | 200-10000 | 1000-10000 | 
| Surface roughness | 0.4-0.1 | ||||
| Surface Treatment of hardness | HRC60以上 | Straightness | 0.15/1000mm | ||
| Circle of Tolerance | GB1184 level 9 | Chrome thickness | 
				According to user requirements  | 
		||
| Full-length size Tolerance | GB1100IT level | Material | According to user requirements | ||
| Axis of hardness | HB220-280 | ||||
| Availability Status | Not dealing with the surface, surface chrome or nickel phosphorus and nitrogen surface salt spray | ||||
| Note: For special specifications,call (letter) custom. | |||||
| Allowable difference level | h7 | h8 | h9 | h10 | h11 | f7 | f8 | 
| Diameter m/m | |||||||
| 6-10 | 0-0.015 | 0-0.022 | 0-0.036 | 0-0.058 | 0-0.09 | 
				-0.013 -0.028  | 
			
				-0.013 -0.035  | 
		
| 10-18 | 0-0.018 | 0-0.027 | 0-0.043 | 0-0.058 | 0-0.09 | 
				-0.016 -0.034  | 
			
				-0.016 -0.043  | 
		
| 18-30 | 0-0.021 | 0-0.033 | 0-0.052 | 0-0.084 | 0-0.13 | 
				-0.02 -0.041  | 
			
				-0.02 -0.053  | 
		
| 30-50 | 0-0.025 | 0-0.039 | 0-0.062 | 0-0.1 | 0-0.16 | 
				-0.025 -0.05  | 
			
				-0.025 -0.064  | 
		
| 50-80 | 0-0.030 | 0-0.046 | 0-0.074 | 0-0.12 | 0-0.19 | 
				-0.03 -0.06  | 
			
				-0.03 -0.076  | 
		
| 80-120 | 0-0.035 | 0-0.054 | 0-0.087 | 0-0.14 | 0-0.22 | 
				-0.036 -0.071  | 
			
				-0.036 -0.9  |