... parts 1. cnc machined part 2. tolerance on all the screw holes: 0.02mm 3. custom part 4. non-standard ... 0 and -0.02mm ;9. Custom parts is completely according to your drawings and samples ... forging, and permanent mold casting. Such as pump parts,manhole covers and frames, handwheel, valve, iron ... point for piling and other industry machinery parts etc. Our material standard accords with DIN, JIS, ASTM, ...