Can blind holes be threaded?

Yes. Blind tapped holes are commonly used for concealed fasteners. Bottoming taps are ideal for maximizing thread engagement without break-through.

How deep should a blind hole be?

Typically 3–4× the hole diameter. For threaded blind holes, allow additional unthreaded space at the base.

What’s the tolerance range?

±0.05 mm for diameter and ±0.1 mm for depth is common in CNC precision machining.

What do buyers need to provide when requesting a quote?

Buyers should provide hole diameter, total depth, thread specs, CAD files (2D and STEP), material type, and quantity forecast.

Can bronze rust in coastal environments?

Bronze does not rust like iron, but marine air can accelerate patina formation due to increased moisture and salt exposure.

What causes bronze to turn green?

The green coloration on bronze comes from copper reacting with air, moisture, and carbon dioxide to form copper carbonate, also known as patina.

Is patina a sign of damage?

No. Patina is a natural and often protective layer that forms on bronze, helping shield the underlying material from further corrosion.

How can I keep bronze looking new?

To maintain a clean finish, apply wax or lacquer coatings regularly, avoid acidic or abrasive cleaners, and store or install bronze in dry, well-ventilated environments.

Is bronze or stainless steel better for outdoor fixtures?

Both are durable, but bronze offers an aging aesthetic with protective patina, while stainless steel provides a more consistent, modern appearance. The choice depends on visual goals and environmental exposure.

Can I request bronze parts with pre-applied patina or protective finishes?

Yes. YISHANG offers customizable bronze finishes, including pre-patinated and coated options based on client specifications.

Metal Fabrication Services-YISHANG Fabrication

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Design Support helps create optimized solutions, ensuring your project meets all functional and aesthetic requirements.

Laser Cutting

Laser Cutting provides precise, clean cuts for complex designs, ensuring high-quality results with minimal waste.

CNC Bending

CNC Bending offers precise, custom bends for various materials, ensuring accuracy and consistency in every part.

CNC Punching

CNC punching uses a computer-controlled machine to punch holes, slots, and other shapes in sheet metal.

CNC Machining

CNC Machining services offer precise, custom parts with fast turnaround and exceptional accuracy.

Surface Finishing

Surface Finishing services enhance the appearance and durability of parts, ensuring a smooth, high-quality finish.

Welding

Precision welding services range from traditional MIG, TIG, and Spot welding techniques to automated practices.

Quality Control

Quality Control ensures every product meets the highest standards of precision, reliability, and performance.

Assembly

Assembly services ensure precise integration of components, delivering ready-to-use products.

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At Yishang, we are dedicated to providing our clients with high-quality, durable metal products.We specialize in OEM & ODM services, allowing us to customize every aspect of the design and manufacturing process to meet your exact specifications.

Delivering customized solutions that meet the highest standards, ensure each client to that our products and services drive success for their business.

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Cost-Effective and Rapid Production

We efficiently produce a range of sheet metal prototypes and final products. YISHANG ensures quick turnaround times while maintaining high precision. Our high-volume production capabilities enable us to offer competitive pricing for sheet metal fabrication services.

Outstanding Strength-to-Weight Ratio

Our advanced sheet metal fabrication allows us to create lightweight yet durable components. We ensure that all produced sheet metal products possess high strength, scratch resistance, and corrosion resistance.

Diverse Materials and Techniques

We excel in a variety of sheet metal fabrication techniques, allowing us to create complex components with intricate features such as notches, slots, and holes. Our broad range of materials is designed to endure electrical, high-temperature, and corrosive conditions.

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Their service is exceptional, and we always receive top-notch results for our projects.

Emily Brown

We trust YISHANG for their professionalism and ability to meet our exact specifications.

Mark Williams

YISHANG’s attention to detail and commitment to quality have made them our preferred supplier.

Laura Garcia

Their customer support and timely delivery make YISHANG a standout choice for our needs.

James Smith

We’re impressed with their overall service, ensuring everything is perfect from start to finish.

Sarah Taylor

YISHANG has been a reliable partner, consistently delivering high-quality parts on time.

Robert Johnson

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Services

What can we do for you?

Design Support

Laser Cutting

CNC Bending

CNC Punching

CNC Machining

Surface Finishing

Welding

Quality Control

Assembly

Get Instant Pricing in 30 Seconds!

Delivering customized solutions that meet the highest standards, ensure each client to that our products and services drive success for their business.

Successful Projects

Years in business

Team Members

Production Area

Material, we provide

Mild Steel

Galvanized Steel

Stainless Steel

Aluminum

Brass

Copper

Contact

Let's talk business. But you first.

Cost-Effective and Rapid Production

Outstanding Strength-to-Weight Ratio

Diverse Materials and Techniques

INDUSTRIES

Car

Hardware

Appliance

Electronics

Agriculture

Architectural

Construction

Medical-equipment

Pet

Vending

Energy

advertising

Testimonials

First impression, our clients

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