Guokun Casting, of Baoding Hebei is an ISO 9001-2008 registered iron and steel foundry & supplier of high quality carbon steel, alloy steel, stainless steel, wear resistant steel castings, gray iron casting, ductile iron casting, protype castings and machhined castings used in Power, Mining, Transporation, Agricultural, Automobile, bus and truck parts,valves, oil & Gas steel castings, Pipe Fittings and Gear Industry.
Please check the Casting Tolerance and tell us your casting needs!
| ISO 铸件尺寸公差标准 ISO8062 （ GB/T6414） CT5-CT7 | |||||||||||
| 基本尺寸（mm） | 铸件线性尺寸公差等级（GB/T6414） | ||||||||||
| Nominal dimension | Linear dimension Tolerances（ISO8062） | ||||||||||
| > | ≤ | CT4 | CT5 | CT6 | CT7 | CT8 | |||||
| — | 10 | 0.26 | ±0.13 | 0.36 | ±0.18 | 0.52 | ±0.26 | 0.74 | ±0.37 | 1 | ±0.5 |
| 10 | 16 | 0.28 | ±0.14 | 0.38 | ±0.19 | 0.54 | ±0.27 | 0.78 | ±0.39 | 1.1 | ±0.55 |
| 16 | 25 | 0.3 | ±0.15 | 0.42 | ±0.21 | 0.58 | ±0.29 | 0.82 | ±0.44 | 1.2 | ±0.6 |
| 25 | 40 | 0.32 | ±0.16 | 0.46 | ±0.23 | 0.64 | ±0.32 | 0.9 | ±0.45 | 1.3 | ±0.65 |
| 40 | 63 | 0.36 | ±0.18 | 0.5 | ±0.25 | 0.7 | ±0.35 | 1 | ±0.50 | 1.4 | ±0.70 |
| 63 | 100 | 0.4 | ±0.20 | 0.56 | ±0.28 | 0.78 | ±0.39 | 1.1 | ±0.55 | 1.6 | ±0.80 |
| 100 | 160 | 0.44 | ±0.22 | 0.62 | ±0.31 | 0.88 | ±0.44 | 1.2 | ±0.60 | 1.8 | ±0.90 |
| 160 | 250 | 0.5 | ±0.25 | 0.7 | ±0.35 | 1 | ±0.50 | 1.4 | ±0.70 | 2 | ±1.0 |
| 250 | 400 | 0.56 | ±0.28 | 0.78 | ±0.39 | 1.1 | ±0.55 | 1.6 | ±0.80 | 2.2 | ±1.1 |
| 400 | 630 | 0.64 | ±0.32 | 0.9 | ±0.45 | 1.2 | ±0.60 | 1.8 | ±0.90 | 2.6 | ±1.3 |
