Sheet Metal Fabrication Service

Custom sheet metal parts and prototypes with exceptional precision and quality. Expertly crafted sheet metal components for diverse industries and applications. Delivering high-quality, customized sheet metal parts to meet your exact specifications.

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Our Sheet Metal Fabrication Technologies

Our sheet metal fabrication services provide high-precision, custom metal parts and prototypes tailored to your exact specifications. Utilizing advanced cutting, bending, welding, and finishing techniques, we deliver durable and high-quality components for various industries, including automotive, aerospace, electronics, and industrial applications. With a focus on precision and quality assurance, we ensure every project meets the highest standards.

CNC Laser cutting of metal with sparks, modern industrial technology. Small depth of field.

Laser Cutting

Our laser cutting services offer precise and clean cuts for various metals, perfect for intricate shapes and detailed designs.

Close up the bending machine operator hold the sheet metal parts and wear safety glove. The sheet metal working operation by skill operator.

Bending

Our bending services provide accurate and consistent metal forming, ensuring your parts meet exact specifications with high-quality finishes.

Sheet Metal Materials We Have

Aluminum Alloys

precision metal components made on CNC machines for industrial applications

Aluminum 6061

Features: Versatile, good mechanical properties, excellent corrosion resistance, weldable, and suitable for various applications.

Applications: Aerospace, automotive, marine, and general fabrication.

Aluminum 5052

Features: High fatigue strength, excellent corrosion resistance, good workability, and weldability.

Applications: Marine environments, fuel tanks, pressure vessels, and sheet metal work.

Aluminum 1100

Features: Excellent corrosion resistance, good formability, and high thermal and electrical conductivity.

Applications: Heat exchangers, chemical equipment, and food packaging.

Steel Alloys

Many types of metal details industrial design background, engineering technology concept

Steel C20 (1020)

Features: Good machinability, weldability, and cost-effectiveness. Lower tensile strength but easily formable.

Applications: Structural components, fasteners, automotive parts, and general fabrication.

Steel C45 (1045)

Features: Medium carbon steel with good tensile strength and impact resistance. Easily machinable and can be heat treated.

Applications: Gears, bolts, axles, machine parts, and shafts.

Steel S235

Features: Low carbon structural steel with good weldability and machinability. Provides moderate strength and toughness.

Applications: Structural components, construction materials, frames, and brackets.

Steel S355

Features: High-strength low-alloy structural steel with excellent weldability, toughness, and machinability. Offers higher strength than S235.

Applications: Structural engineering, bridges, cranes, and heavy-load bearing components.

Galvanized Steel

Features: Coated with a layer of zinc for enhanced corrosion resistance.

Applications: Outdoor applications, HVAC ductwork, and construction.

Stainless Steel Alloys

shiny bare steel parts after cnc turning operations close background with selective focus

Stainless Steel 304

Features: Excellent corrosion resistance, good formability, and weldability. Non-magnetic.

Applications: Kitchen equipment, food processing equipment, chemical containers, and architectural applications.

Stainless Steel 316

Features: Superior corrosion resistance, particularly against chlorides and marine environments. Good mechanical properties.

Applications: Marine equipment, medical devices, chemical processing equipment, and outdoor architectural elements.

Stainless Steel 301

Features: High strength, good ductility, and excellent corrosion resistance. Can be cold worked to increase strength.

Applications: Springs, fasteners, aircraft parts, and automotive components.

Copper Alloys

The abstract scene multi-tasking CNC lathe machine swiss type and pipe connector parts. The hi-technology brass fitting connector manufacturing by machining center.

Copper Alloy C110 (Electrolytic Tough Pitch, ETP)

Features: High electrical and thermal conductivity, good corrosion resistance, excellent formability, and solderability.

Applications: Electrical conductors, wiring, bus bars, and heat exchangers.

Copper Alloy C101 (Oxygen-Free Copper, OFC)

Features: Excellent electrical and thermal conductivity, high purity, improved ductility, and weldability compared to C110.

Applications: High-quality audio cables, vacuum devices, electronic components, and superconductors.

 

Copper Alloy C220 (Commercial Bronze)

Features: Good strength, corrosion resistance, and formability. Contains around 90% copper and 10% zinc.

Applications: Decorative items, architectural components, springs, and bearings.

Copper Alloy C260 (Cartridge Brass)

Features: Good strength, excellent formability, good corrosion resistance, and moderate conductivity. Contains around 70% copper and 30% zinc.

Applications: Ammunition casings, automotive radiators, heat exchangers, and musical instruments.

Sheet Metal Fabrication Surface Finishes

Surface finishes are critical in CNC machining as they affect the appearance, functionality, and performance of the final product. Here are some common surface finishes used in CNC machining.

These surface finishes offer a range of options depending on the requirements for appearance, corrosion resistance, wear resistance, and other functional properties.

Detail of aluminum machined parts, shiny surface. Industrial abstract background, shallow depth of field.

Standard

  • Description: The surface finish directly from the machine without any additional processing. Tool marks are visible.
  • Ra Value: 3.2 µm (125 µin)
  • Applications: Internal components, parts not requiring aesthetic appeal, and prototypes.
CNC-Bead-Blasting-Part-Aluminum-DM_20240624212859_001

Bead Blasting

  • Description: A surface finishing process where small glass beads or other abrasive materials are blasted onto the part’s surface to create a smooth, matte finish.
  • Ra Value: 1.6-3.2 µm (63-125 µin)
  • Applications: Aesthetic parts, removal of tool marks, and preparation for painting or coating.
CNC Turning machine parts, Anodize Aluminum. high precision cnc

Anodizing

  • Description: An electrochemical process that converts the metal surface into an anodic oxide finish. Commonly used for aluminum parts, it can be clear or colored.
  • Ra Value: Varies (usually between 0.8-1.6 µm or 32-63 µin)
  • Applications: Aerospace, automotive, consumer electronics, and decorative parts.
Powder coatings samples on metal plate

Powder Coating

  • Description: A dry finishing process that involves the application of a powdered paint onto the part’s surface, which is then cured under heat to form a solid, durable finish.
  • Ra Value: Varies (depends on powder type and application method)
  • Applications: Consumer products, automotive components, and industrial equipment.
CNC-part-finish-Electropolishing-Stainless-Steel-1024x373-optimized

Electropolishing

  • Description: An electrochemical process that removes a thin layer of material from the part’s surface, resulting in a smooth, shiny finish. It also improves corrosion resistance.
  • Ra Value: 0.4-1.6 µm (16-63 µin)
  • Applications: Medical devices, food processing equipment, and semiconductor components.
cnc-part-surface-finish-brushing-DM_20240624225915_001

Brushing

  • Description: A surface finishing process where abrasive brushes are used to create a uniform, directional satin finish.
  • Ra Value: 0.8-1.6 µm (32-63 µin)
  • Applications: Decorative parts, consumer electronics, and architectural components.
CNC-Machining Titanium-Alloy Machined-part-polishing-polished

Polishing

  • Description: A mechanical process that involves rubbing the part’s surface with an abrasive material to create a high-gloss, mirror-like finish.
  • Ra Value: 0.025-0.2 µm (1-8 µin)
  • Applications: Decorative parts, optical components, and high-precision equipment.
CNC-part-eletroplating-DM_20240624223852_001

Plating

  • Description: A process where a thin layer of metal (such as nickel, chrome, or gold) is deposited onto the part’s surface to improve appearance, corrosion resistance, and wear resistance.
  • Ra Value: Varies (depends on plating material and process)
  • Applications: Electronics, automotive components, and decorative parts.
cnc-part-surface-finish-passivation-sus20220309135107M63jXp

Passivation

  • Description: A chemical treatment used on stainless steel parts to remove free iron and enhance corrosion resistance by creating a passive oxide layer.
  • Ra Value: No significant change
  • Applications: Medical devices, food processing equipment, and marine components.
painting Powder coatings samples on metal plate

Painting

  • Description: The application of paint or lacquer to the part’s surface for aesthetic purposes and protection against corrosion and wear.
  • Ra Value: Varies (depends on paint type and application method)
  • Applications: Consumer products, automotive components, and industrial equipment.

ProtoTi Sheet Metal Fabrication General Specifications

Material Types

  • Metals: Aluminum, steel, stainless steel, copper, brass.
  • Thickness Range: Typically from 0.5mm to 6mm (0.02″ to 0.24″), though capabilities can vary.

Cutting Techniques

  • Laser Cutting: High precision, suitable for complex shapes and fine details.
  • Plasma Cutting: Fast, effective for thicker materials.
  • Water Jet Cutting: Suitable for a variety of materials without heat distortion.
  • Shearing: Quick and efficient for straight cuts.

Forming Techniques

  • Bending: Achieved using press brakes, with capabilities up to 12 feet in length.
  • Rolling: For creating cylindrical shapes or bends.
  • Stamping: High-speed production of complex shapes.
  • Punching: Creating holes or cutouts in sheet metal.

Joining Techniques

  • Welding: MIG, TIG, and spot welding for strong, permanent joins.
  • Riveting: Mechanical fastening for dissimilar materials.
  • Adhesive Bonding: Suitable for materials sensitive to heat.

ProtoTi Sheet Metal Fabrication Tolerances

Cutting Tolerances

  • Laser Cutting: ±0.1mm (±0.004″).
  • Plasma Cutting: ±0.5mm (±0.020″).
  • Water Jet Cutting: ±0.2mm (±0.008″).
  • Shearing: ±0.3mm (±0.012″).

Bending Tolerances

  • General Bending: ±0.5mm (±0.020″), depending on material thickness and bend length.
  • Critical Bends: ±0.1mm (±0.004″) achievable with precise setup and tooling.

Forming Tolerances

  • Rolling: ±0.5mm (±0.020″) for radius consistency.
  • Stamping: ±0.1mm (±0.004″) for high precision parts.
  • Punching: ±0.1mm (±0.004″) for hole size and position.

Flatness Tolerances

  • Post-Cutting: ±0.5mm (±0.020″) per meter of length.
  • Post-Bending: ±0.2mm (±0.008″) per 100mm of bend length.

Welding Tolerances

  • General Welds: ±1mm (±0.040″) for overall dimensions.
  • Precision Welds: ±0.5mm (±0.020″) achievable with jigs and fixtures.

Hole and Slot Tolerances

  • General Holes: ±0.1mm (±0.004″) for diameter and position.
  • Precision Holes: ±0.05mm (±0.002″) with reaming or secondary machining.

Edge Tolerances

  • General Edges: ±0.2mm (±0.008″) for cut edges.
  • Precision Edges: ±0.1mm (±0.004″) achievable with secondary finishing.

5 Steps to Get Quote & Order

Instant Quote & Order

Step 1. File Upload

Upload your 3D files on Instant Quote page. Format supported: STL, STP, STEP, OBJ, IGS, IGES, ZIP.

Step 2. Configuration

Configure your part specification and add to cart one by one.

Step 3. Check Out

Confirm all parts in your cart and check out with online payment.

Step 4. Production & Quality Check

Let us handle the manufacturing and quality check and prepare for shpping.

Step 5. Delivery & Support

We will select the best way for global shipping. No limit to DHL, UPS, Fedex ect..

BOM Quote & Order

Step 1. File Upload

Submit your 3D, 2D files & BOM (if needed) to ​us online or via Email. Format supported: STEP | STP | SLDPRT | STL | DXF | X_T | X_B | CATPART | SAT | OBJ

Step 2. Receive Tailored Quote

We’ll provide a comprehensive quote within 24 hours, outlining costs, timelines, and key deliverables.

Step 3. Collaborate with Our Experts

Free DFM if needed. Work with our engineering and production teams to finalize designs and address any technical questions, ensuring all aspects aligned with your vision.

Step 4. Production & Quality Check

We commence production, maintaining stringent quality control processes to ensure each product meets our high standards. Regular updates will keep you informed throughout.

Step 5. Delivery & Support

Upon completion, your products are carefully packaged and shipped. We offer ongoing support to address any post-delivery questions or needs, ensuring your complete satisfaction.

Why ProtoTi

Overhead View Of Engineering Workshop With Workers Using CNC Machinery

In House Production Capacity

Our in-house production ensures superior quality control and faster turnaround times, eliminating delays. We offer flexible, customized solutions and competitive pricing by reducing outsourcing costs. Seamless team communication ensures smooth workflow and rapid issue resolution. Enhanced security protects your sensitive information, while minimizing supply chain risks ensures reliable production. Continuous innovation with the latest technologies consistently improves efficiency and quality.

 

Extensive Supplier Network

Leverage our extensive supplier network to access a wide range of high-quality materials and services. We ensure fast, reliable sourcing and competitive pricing, enabling you to meet your manufacturing needs efficiently and cost-effectively. Benefit from our strong partnerships and streamlined supply chain management for superior project outcomes.

 

Interior of metalworking factory workshop hangar. Modern industrial enterprise production.
Unrecognizable engineer working on a 3D model of a machine on a computer.

Professional Engineering Support

Our professional engineering support offers expert guidance at every stage of your project. From initial design to final production, our experienced engineers ensure optimal performance, precision, and efficiency. Leverage our technical expertise and innovative solutions to overcome challenges and achieve your manufacturing goals with confidence and excellence.

 

Quality Assurance

Our quality assurance guarantees the highest standards in every product we deliver. Through rigorous testing and meticulous attention to detail, we ensure consistency, reliability, and excellence. Trust our commitment to quality to meet and exceed your expectations on every project.

 

operator inspection dimension aluminium automotive part by CMM after machining in industrial factory

Sheet Metal Fabrication FAQs​

We commonly use aluminum, steel, stainless steel, copper, and brass for various fabrication projects.

Turnaround time varies based on project complexity, but standard projects are typically completed within 2-4 weeks.

We can handle materials up to 12 feet in length and thicknesses ranging from 0.5mm to 6mm (0.02" to 0.24").

We offer various finishes, including bead blasting, powder coating, anodizing, brushing, and more.

Quality is ensured through rigorous inspection processes, adherence to tight tolerances, and using high-quality materials.

Yes, we specialize in creating custom prototypes to help you visualize and test your designs.

We utilize laser cutting, plasma cutting, water jet cutting, and shearing for precise and efficient cutting.

Yes, our experienced engineers can provide design assistance to optimize your parts for manufacturability.

We can achieve tolerances as tight as ±0.1mm (±0.004") for cutting and ±0.5mm (±0.020") for bending, depending on the project requirements.

We offer MIG, TIG, and spot welding to suit various material types and project needs.

Can you handle high-volume production runs?

Yes, we offer additional services such as assembly, packaging, and shipping to meet your project needs.

Get Your Sheet Metal Project Started

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Quote Form

Submit Your Request

Note: An account under your email will be generated automatically. Please input a correct email for quote record tracking.

Note:

Upload your 3D CAD (2D drawings & BOM if needed) to ​us online.

Format supported: STEP | STP | SLDPRT | STL | X_T | CATPART |  SAT | OBJ | DWG | DXF | PDF | ZIP | RAR