Service Overview
Turnkey Precision Machining Solutions for Complex Metal Components
Qiaodi Steel offers comprehensive custom machining services tailored to your exact engineering specifications. Operating from Wuxi—China’s premier industrial manufacturing and steel processing hub—we combine advanced multi-axis CNC machining, precision turning, milling, and grinding to produce high-quality custom metal parts for global equipment manufacturers, automotive, valve, pump, and automation industries.
Whether you require prototype development, low-volume pilot runs, or high-volume mass production, our experienced engineering team works directly with your STP, STEP, IGES, DWG, and PDF CAD models. We provide Design for Manufacturability (DFM) feedback to optimize machining efficiency, tighten tolerances, and lower production costs.
Core Precision Machining Capabilities
- 01 / CNC Precision Milling (3, 4 & 5-Axis Milling)
- Capabilities: Complex 3D contouring, pocketing, facing, and high-speed milling for intricate geometric parts with tight dimensional accuracy.
- Applications: Valve bodies, pump housings, brackets, manifolds, and structural aerospace/machinery enclosures.
- 02 / CNC Precision Turning & Swiss Machining
- Capabilities: High-precision CNC lathes with live tooling for turned components requiring simultaneous drilling, tapping, and grooving.
- Applications: Shafts, pins, bushings, hydraulic fittings, nozzles, and threaded connectors.
- 03 / Surface Grinding & Precision EDM
- Capabilities: Surface grinding, centerless grinding, and Wire EDM for ultra-tight tolerances and mirror-like surface finishes.
- Applications: High-precision shafts, hardened tool components, keyways, and mold core parts.
- 04 / Secondary Processing & Assembly
- Capabilities: Tapping, deburring, chamfering, heat treatment, surface plating, and sub-assembly of multi-component OEM assemblies.
Technical Specifications & Tolerances
Headline: Machining Capabilities & Technical Parameters
| Parameter | Technical Specifications |
| Machining Processes | CNC Milling, CNC Turning, Swiss Machining, Wire EDM, Surface Grinding, Drilling, Tapping |
| Achievable Tolerances | Standard: $\pm 0.01\text{ mm}$ ($\pm 0.0004”$) / High-Precision: Up to $\pm 0.005\text{ mm}$ ($\pm 0.0002”$) |
| Surface Roughness | As-machined Ra $1.6 – 3.2\,\mu\text{m}$ / Polished & Ground: Up to Ra $0.2 – 0.4\,\mu\text{m}$ |
| Supported Materials | Stainless Steel: 304, 304L, 316, 316L, 303, 17-4PH, 310S, Duplex 2205 Carbon & Alloy Steel: 4140, 1045, C45, Q235, 8620 Aluminum & Brass: Al 6061-T6, 7075, Brass C36000, Copper |
| Accepted CAD Formats | 3D Files: STP, STEP, IGES, X_T / 2D Drawings: DWG, DXF, PDF |
| Surface Treatments | Anodizing, Passivation, Electro-polishing, Black Oxide, Zinc Plating, Powder Coating, Nitriding |
Quality Control & CMM Inspection
- 100% Drawing Compliance: Every part is audited against your technical drawings for dimensions, thread pitches, geometric tolerances (GD&T), and surface finishes.
- Advanced Metrology Equipment:
- CMM (Coordinate Measuring Machine) for 3D spatial dimensions and complex contours.
- Optical Comparators & Video Measuring Systems.
- Digital Micrometers, Height Gauges, and Thread Plug/Ring Gauges.
- Roughness Testers & PMI Spectrometer for material verification.
- Traceable Documentation: Accompanied by Full Dimension Inspection Reports and EN 10204 3.1 Material Certificates with every shipment.
How We Work with You
- Submit Your Drawings: Upload your CAD files (STP/DWG/PDF) along with material, quantity, and tolerance requirements.
- DFM Review & Quote: Our engineers review your drawings and provide a detailed quote and DFM feedback within 24 hours.
- Precision Production: Machining begins with strict In-Process Quality Control (IPQC) monitoring at every stage.
- CMM Inspection & Shipping: 100% inspected, safely packaged in custom foam/boxes, and shipped via air express or ocean freight.