Advanced Machining Services
We simplify your supply chain by integrating all critical processes under one roof. From initial concept to final assembly, we provide a seamless, accountable partnership for your precision metal parts.
Sheet Metal Fabrication: Laser cutting, bending, punching, and welding for enclosures and structures.
Precision Machining: CNC milling and turning for accurate, complex components.
Casting Solutions: Ideal for complex geometries and cost-effective high-volume production (Die Casting & Investment Casting).
Engineering Support: We provide more than parts; we offer solutions. Our team delivers expert DFM feedback and 1-on-1 support to optimize your projects for manufacturability, cost, and performance.
Finishing & Assembly: Surface treatment, coating, and joining for complete, ready-to-use parts.
This integrated approach ensures better quality control, faster turnaround, and lower total cost for your projects. Let's build your solution together.
Materials
Engineering Materials Tolerance & Surface Treatment Table
Precision Manufacturing Material Selection Guide
We master a comprehensive range of engineering materials, selecting the optimal one for your strength, weight, corrosion resistance, and cost requirements. All materials comply with international standards (ASTM, DIN, ISO, JIS) to ensure global consistency.
We also support equivalent Chinese GB standards (e.g., 40Cr, 45#) upon request, offering you both flexibility and reliability. Our precision manufacturing ensures every part meets even the most demanding specifications.
| Material Category & Grades | Standard Tolerance (mm) | Tight Tolerance (mm) | Recommended Surface Treatments |
|---|---|---|---|
| Steel | |||
| Low Carbon (1008, 1010, 1018, A36) | ±0.05 | ±0.025 | Zinc Plating, Nickel Plating, Chrome Plating, Powder Coating, Black Oxidation
ASTM
DIN
GB 40Cr
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| Medium Carbon (1045) | ±0.05 | ±0.02 | Black Oxidation, Chrome Plating, Powder Coating, Heat Treatment
ISO
GB 45#
|
| Alloy Steel (4140, 4340) | ±0.05 | ±0.02 | Black Oxidation, Zinc Plating, Chrome Plating, Heat Treatment
ASTM
JIS
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| Stainless Steel (303, 304, 316, 416) | ±0.05 | ±0.015 | Passivation, Electroplating, Powder Coating, Sand Blasting, Brushed
DIN
ISO
|
| Aluminum | |||
| Aluminum Alloy (6061, 6063, 5052, 7075) | ±0.05 | ±0.015 | Anodizing, Sandblast Anodized, Colorful Anodized, Brushed, Polishing, Chrome Plating
ASTM
ISO
JIS
|
| Copper & Alloys | |||
| Brass (C36000, C26000) | ±0.05 | ±0.02 | Nickel Plating, Chrome Plating, Polishing, Lacquered, Anti-Tarnish
ASTM
|
| Bronze (C51000, C93200) | ±0.05 | ±0.02 | Nickel Plating, Chrome Plating, Polishing
DIN
|
| Copper (C11000) | ±0.05 | ±0.02 | Nickel Plating, Chrome Plating, Tin Plating, Anti-Tarnish
ISO
|
| Engineering Plastics | |||
| General Purpose (ABS, PC, PVC, PP) | ±0.10 | ±0.05 | Polishing, Painting, Silk Screen Printing
ISO
|
| Performance Plastics (POM, PA66, PEEK, PTFE, UHMW-PE) | ±0.10 | ±0.05 | Polishing, Sanding
ASTM
ISO
|
Comprehensive Surface Treatments
We provide comprehensive surface treatments—from protective coatings like anodizing and powder coating to aesthetic finishes like polishing—to enhance durability, functionality, and appearance. Our in-house capabilities ensure quality control and timely delivery, delivering parts that are fully finished and ready for use.
Workshop Show
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Workshop
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Workshop
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Workshop
Quality Inspection &Assurance
Systematic Quality Management Precision Assured: Our Commitment to Quality
At Yingda Precision, quality is engineered into every stage. As your one-stop partner, our integrated process ensures seamless control from material to finished part, guaranteeing reliability that piecework suppliers cannot match.
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Proactive Process Control
We inspect at every critical stage—after cutting, forming, welding, and finishing—to correct deviations immediately, saving time and cost.
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Final Verification & Documentation
Each shipment undergoes a rigorous final inspection. We provide detailed reports with key dimensions verified, ensuring what you receive matches what you approved.
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Certified System
Our operations are governed by an ISO 9001:2015 certified quality management system, ensuring standardized, repeatable processes.
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The Right Tool for the Job
Our quality lab is equipped with the tools to validate every specification:
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For Overall Precision&For Critical Dimensions&For Fit & Function
cision CMM (3D Coordinate Measuring Machine) and 2.5D Profile Projector for complex geometries and contours.Swiss Precision Measuring Instruments, Micrometers, and Height Gauges for exact measurements.Go/No-Go Gauges, Thread Gauges, and Calipers to ensure perfect assembly and interchangeability.
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Certificate
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Certificate
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Certificate
Packaging Service
We provide export-ready, industrial-strength packaging with shock-absorbing materials and reinforced cases to ensure complete protection throughout transit. We offer flexible global shipping solutions, including sea freight, air freight, land transport, and international express (DHL,FedEx, UPS and ARAMEX). You can choose the most cost-effective and timely shipping method based on your cargo’s volume, weight, and urgency
At Shandong Yingda , you can customize various plastic or metal parts, from prototype to end-product. Give us a concept and we’ll return you a product, we are looking for serving you in the near future.
