Precision CNC Machined Parts for Aluminum, Steel, Brass
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Product Highlights
- Multi-Material Support: Processes Aluminum 6061-T6, Stainless Steel 304, Carbon Steel 45#, and Iron.
- Custom Dimensions: Overall dimensions are customizable to meet specific project requirements.
- Advanced Surface Treatment: Offers Anodizing, Powder Coating, Sandblasting, and Quenching + Tempering.
- 100% Quality Inspection: Mandatory final inspection before shipment with pre-production samples.
- Wide Application Range: Used in machinery, automobiles, aerospace, energy, electronics, and medicine.
- Expert Engineering Support: Free CAD/3D file creation from samples if drawings are not available.
- Flexible Customization: Customized products including sheet metal, steel structures, and special parts.
Product Attributes
- Customization
- Available
- Application
- Fastener, Machinery Accessory
- Standard
- GB
- Model NO.
- GC-X29
- Surface Treatment
- Powder Coated
- Production Type
- Batch Production
- Machining Method
- CNC Machining
- Material
- Steel, Alloy, Aluminum, Iron
- Product Name
- Machined Products
- Check
- 100% Inspection
- Overall Dimensions
- Customization
- Processing Technology
- CNC Turning and Milling Combined Process
- Transport Package
- Standard Export Packaging
- Specification
- Can be customised
- Trademark
- GUOCHENG
- Origin
- Yantai, Shandong
- Production Capacity
- 1000
- Package Size
- 1000.00cm * 1000.00cm * 1000.00cm
- Package Gross Weight
- 10000.000kg
- Lead Time
-
30 days (1 - 1000 Pieces)
To be negotiated ( > 1000 Pieces)
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
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Product Description

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 |
| 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° |
| 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 |



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.
About the Supplier
This supplier has been audited by TÜV Rheinland. Verify the report on the official TÜV Rheinland website with ID "MIC-ASI2451626". Items marked "" are certified.
Company Profile
Yantai Guocheng Metal Co., Ltd. Was established in 2017, specializing in the production of metal products and accessories. As a comprehensive metal processing and manufacturing enterprise, GUOCHENG enjoys solid experience and advanced production tools. Located in China's Shandong Province, GUOCHENG has chosen a strategic location that provides the necessary proximity for the development of its operations. It is located close to major highways, just a 2-hour drive from Qingdao. Our engineering department employs specialists in the design and production of metal structures. Our mechanical welding know-how and compliance with industry standards guarantee maximum quality control.
As a specialist manufacturer, we draw on our expertise in the production of metal components and equipment. Since the establishment of our company, we have adhered to the business principle of "quality first, customer first, reputation-based", and always tried our best to meet the potential needs of customers. Our company is sincerely willing to cooperate with enterprises from all over the world to achieve a win-win situation, because the trend of economic globalization has developed with an irresistible force.
About Our Factory & Business Background
- Address
- No. 18, Binglun Road, Zhifu District, Yantai, Shandong, China
- Terms of Payment
- LC, T/T, D/P, PayPal, Western Union, Small-amount payment, Money Gram
- International Commercial Terms(Incoterms)
- FOB, EXW, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, Others, FCA
- Average Lead Time
-
Peak Season Lead Time: 3-6 months
Off Season Lead Time: 1-3 months - Nearest Port
- Yantai Port, Qingdao Port, rizhao Port
Our Production Capability & Technical Expertise
Our Industry Experience & Global Business Record
- Export Year
- 2018-03-09
- Main Markets
- North America, Southeast Asia, Eastern Asia, Western Europe
FAQ
- What information is required for a quote?
- Please provide: 1) Comprehensive drawings (STEP, CAD, PROE, DXF, PDF); 2) Material specifications; 3) Surface treatment preferences; 4) Quantity; 5) Special demands like packing or labels.
- What shall we do if we do not have drawings?
- Send samples with drafts specifying Thickness, Length, Height, and Width. Our engineering team will create detailed CAD or 3D files for you.
- How do we ensure quality?
- Samples are pre-produced before mass production, and a final inspection is mandatory before shipment.
- What can you buy from us?
- We provide sheet metal parts, steel structure parts, precision machined parts, and special metal parts, all customizable.
- What materials are supported?
- We process Aluminum alloy 6061-T6, Stainless steel 304, Carbon steel 45#, and Iron.
- What is the lead time?
- Peak season lead time is 3-6 months, while off-season lead time is 1-3 months.
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