Quality is always our highest priority. Every project goes through strict inspection before shipment, ensuring that every part meets the required tolerances and specifications. With a proven global track record, Tuofa is your reliable CNC machining partner for precision-critical components.
| Limits for Nominal Size | Plastics (ISO 2768-m) | Metals (ISO 2768-f) |
|---|---|---|
| 0.5mm* to 3mm | ±0.1mm | ±0.05mm |
| Over 3mm to 6mm | ±0.1mm | ±0.05mm |
| Over 6mm to 30mm | ±0.2mm | ±0.1mm |
| Over 30mm to 120mm | ±0.3mm | ±0.15mm |
| Over 120mm to 400mm | ±0.5mm | ±0.2mm |
| Over 400mm to 1000mm | ±0.8mm | ±0.3mm |
| Over 1000mm to 2000mm | ±1.2mm | ±0.5mm |
| Over 2000mm to 4000mm | ±2mm | - |
| All parts are deburred. Tightest achievable tolerance is +/-0.01mm and is dependent on part geometry. | ||
| Dimension Detail | Tolerance | |
|---|---|---|
| Edge to edge, single surface | +/- 0.005 inch | |
| Edge to hole, single surface | +/- 0.005 inch | |
| Hole to hole, single surface | +/- 0.005 inch | |
| Bend to edge / hole, single surface | +/- 0.010 inch | |
| Edge to feature, multiple surface | +/- 0.030 inch | |
| Over formed part, multiple surface | +/- 0.030 inch | |
| Bend angle | +/- 1° | |
| By default, sharp edges will be broken and deburred. For any critical edges that must be left sharp, please note and specify in your drawing. | ||
Tuofa strictly implements 10 steps quality inspection to ensure that the qualified rate is higher than 99.98%.
At Tuofa, our approach strictly adheres to the ISO 9001-certified quality management system. We execute inspection and quality control system for the whole process to make sure every project meets your requirements. Our quality assurance starts from incoming materials inspection, then first article and in-process inspection, and final inspection and testing with reports and certifications before shipping.
Inspection of raw materials is a must to ensure our supply chain is up to standard. Process checks help us catch any problems early, fix them. Final inspection and factory inspection are the most authoritative and help us to verify that our customers are only receiving parts that meet their high standards.
To ensure that quality checks are effective, we need to use the right inspection equipment. Our team uses altimeters, 2D projectors, tool microscopes, micrometers, CMM machines and more. We have a range of high-quality imported and domestic equipment that enables us to ensure consistent accuracy of your orders with a precision of up to 0.0005mm.
© 2006-2025 Shenzhen Tuofa Technology Co.,Ltd. Tutti i diritti riservati.
Privacy*
As with all our customers, confidentiality remains vital in demonstrating our commitment to customer service. You can feel reassured that we will gladly complete disclosure forms for your applications and your applications will solely be used for quotation purposes.