
Machined products are obtained by using mechanical processing techniques such as turning, milling, planing, grinding, drilling, etc., to cut and shape raw materials like metals and plastics. The resulting components meet the specified dimensions and precision requirements and are widely used in fields such as machinery, automobiles, and aviation.
Machined products are widely used in various fields such as machinery, automobiles, aerospace, energy, electronics, and medicine. They serve as core components to achieve functions such as transmission, support, sealing, and positioning, ensuring the precise operation and stable performance of equipment.
Basic parameters
| Parameter category |
Technical indicators |
Standard / Method |
| Materials |
Aluminum alloy 6061-T6 / Stainless steel 304 / Carbon steel 45# |
ASTM B209 / GB/T 1220 |
| Dimension tolerance |
±0.05mm (standard) → ±0.01mm (precision) |
ISO 2768 - mK level |
Processing technology requirements
| Process type |
Key parameters |
Control Points |
| CNC milling |
The spindle speed ranges from 8000 to 12000 rpm, and the feed rate is 0.1 mm per tooth. |
The diameter of the cutting tool is ≥ 3 times the hole diameter. |
| Turning |
Cutting speed: 200 m/min, Back clearance: 0.5 mm |
Top-level vibration ≤ 0.005mm |
| Drilling |
Diameter: H7 grade, chamfer: 0.3 × 45° |
The helix angle of the drill bit is 118° ± 2° |
Heat treatment and surface treatment
| Processing type |
Technical indicators |
Testing standards |
| Quenching + Tempering |
Hardness: HRC 28-32 (45# steel) |
ISO 6508 |
| Anodizing |
Film thickness: 15 - 20 μm (aluminum alloy), salt spray test: 500 hours |
MIL-A-8625 |
| Sandblasting |
Surface roughness: Ra 2.5 - 4 μm, grit size: 80# |
SAE J444 |
Areas of application


Company Profile
YANTAI GOCHAIN METAL CO.,LTD was found in 2017,specializing in the manufacture of metal products and accessories. As a comprehensive metal processing and manufacturing enterprise, GOCHAIN benefits from solid expertise and state-of-the-art production tools. Based in China's Shandong province, GOCHAIN has chosen a strategic location that provides essential proximity for the development of its activities.Located close to major highways, it is only 2 hours' drive from Qingdao. Our engineering department is staffed by experts in the design and manufacture of steel structures .Our know-how in mechanical welding and our compliance with industrial standards guarantee maximum quality control.
Certifications
Related Product Pictures

FAQ
1. Q: What information is required for a quote?
A: To expedite the quoting process, please provide the following details with your inquiry.
1) Comprehensive drawings (STEP, CAD, PROE, DXF, and PDF formats)
2) Material specifications (ALU., STEEL, IRON, COPPER, etc.)
3) Surface treatment preferences (anodizing, powder coating, sandblasting, plating, polishing, brushing)
4) Quantity (per order/ per month/ annual)
5) Do you have any special demands or requirements, such as packing, labels, delivery? Please let us know your needs, so we can ensure your expectations are met with precision and care.
2.Q: What shall we do if we do not have drawings?
A: No worries, simply send your samples to us, accompanied by drafts specifying the Thickness, Length, Height, and Width. Our expert engineering team will craft detailed CAD or 3D files for you, ensuring a seamless process.
3.Q:How do we ensure quality?
A:Samples are pre-produced before mass production and final inspection is mandatory before shipment
4.Q:What can you buy from us?
A:Sheet metal parts, steel structure parts, precision machined parts, special metal parts, etc. can be customised.