Sheet Metal Fabrication Techniques: A Complete Guide

Sheet metal fabrication techniques transform flat metal into precision components for aerospace, automotive, and consumer products. This guide covers every major technique: laser and waterjet cutting, bending, deep drawing, welding, and finishing, with cost comparisons, lead times, and a framework for choosing the right process.

TL;DR: The 5 Essential Sheet Metal Fabrication Techniques

• Cutting: Laser, plasma, waterjet, and NC punch - each excels in different materials and tolerances
• Forming & Bending: Press brake bending is standard; deep drawing and metal spinning handle complex geometries
• Joining: MIG/TIG welding dominates; riveting and spot welding suit specific applications
• Finishing: Powder coating, anodizing, and electroplating protect parts and enhance appearance
• Selection: Match your part geometry, volume, and tolerance requirements to the most cost-effective technique

Key insight: Most parts require a combination of techniques, not just one. laser cutting, then bending, then welding, then finishing is typical. Choose suppliers experienced in your combination, not just one isolated process.

What Is Sheet Metal Fabrication?

Sheet metal fabrication is the process of cutting, forming, and joining sheet metal to create functional parts and assemblies. It differs from CNC machining (which removes material from solid blocks) and is often more cost-effective than injection molding for production volumes under 10,000 units.

Why sheet metal?

• Strength-to-weight ratio: Ideal for structural components
• Speed: Quick turnaround from CAD to finished part (48 hours to 2 weeks depending on technique)
• Scalability: Same tools handle prototype to mid-volume production
• Material range: Steel, aluminum, stainless steel, copper, titanium
• Cost-effective: Minimal material waste; setup costs are reasonable for small to mid-volumes

The sections below cover each sheet metal fabrication technique in depth. Prefer a walkthrough? Watch the video below.

1. Cutting Techniques: From Design to Separated Parts

Cutting is typically the first fabrication step. The technique you choose affects tolerances, edge quality, lead time, and cost.

Laser Cutting

How it works: A high-powered laser vaporizes or melts metal along a programmed path, producing a narrow, heat-affected zone.

• Tolerances: ±0.1-0.15 mm (±0.004-0.006 in.) typical; ±0.05 mm achievable with premium equipment
• Speed: Fast - up to 1,000+ mm/min depending on thickness and material
• Best for: Precision parts, intricate shapes, aluminum and thin steel (up to ~6 mm)
• Material compatibility: Steel, stainless, aluminum, copper (gold, brass, titanium possible but less common)
• Cost: Moderate capital; low per-part cost once setup is complete
• Lead time: 3-7 days typical for quotes; 5-10 days for production

Key strength: Minimal edge quality issues; no burrs on most materials

Waterjet Cutting

How it works: A high-pressure stream of water mixed with abrasive particles cuts through metal without heat, preserving material properties.

• Tolerances: ±0.1-0.2 mm typical (slightly looser than laser)
• Speed: Slower than laser (100-400 mm/min) but handles thick material
• Best for: Thick materials (3-100 mm+), heat-sensitive alloys, hardened steel, composite materials
• Material compatibility: ALL metals (including titanium, hardened steel); composites; no material limitations
• Cost: Higher per-part than laser (abrasive waste); acceptable for low-mid volumes
• Lead time: Similar to laser (5-10 days)

Key strength: No heat distortion; can cut materials laser cannot handle

Plasma Cutting

How it works: An electrically ionized gas (plasma) at extreme temperature cuts through conductive metals.

• Tolerances: ±0.5-1.5 mm (least precise of the three)
• Speed: Fast (500-800 mm/min)
• Best for: Large, rough parts; structural steel; cost-sensitive jobs; carbon steel primarily
• Material compatibility: Steel, stainless, aluminum (limited); cannot cut non-conductive materials
• Cost: Low per-part; high edge quality variation
• Lead time: 5-7 days typical

Key strength: Fastest for rough cutting; lowest cost for large parts

CNC Punching (NC Punch)

How it works: A hardened punch forces through sheet metal, creating a hole or simple profile. Multi-tool designs allow progressive steps.

• Tolerances: ±0.1-0.15 mm for hole position; shape accuracy varies
• Speed: Very fast for high-volume (50-100 parts/min with progressive dies)
• Best for: Repetitive holes, simple cutouts, mass production (1,000+ units); high-volume cost advantage
• Material compatibility: Steel, stainless, aluminum (thinner materials preferred)
• Cost: High tooling ($1,000-$5,000+ for custom dies); very low per-part for volume
• Lead time: 1-2 weeks for die fabrication; 3-5 days for punching once die exists

Key strength: Unbeatable cost at volume; precise hole positioning

Cutting Technique Comparison

Technique	Tolerances	Speed	Setup Cost	Per-Part Cost	Best Volume	Lead Time
Laser	±0.1-0.15 mm	Fast (1000+ mm/min)	Moderate	Low-Medium	1-500 pcs	5-10 days
Waterjet	±0.1-0.2 mm	Medium (200-400 mm/min)	Moderate-High	Medium	1-200 pcs	5-10 days
Plasma	±0.5-1.5 mm	Fast (500-800 mm/min)	Low	Low	1-100 pcs (rough)	5-7 days
NC Punch	±0.1-0.15 mm (positioning)	Very Fast (50-100 pcs/min)	High ($1k-$5k)	Very Low	1,000+ pcs	1-2 weeks (die) + 3-5 days

Selection rule: For prototype to 500 pcs, use laser or waterjet. For 1,000+ identical parts, use NC punch.

2. Forming & Bending Techniques: Shaping Without Cutting

Forming techniques reshape metal without removing material, preserving strength and minimizing waste. When combined with strategic geometry and material selection, these techniques maximize part strength (a principle that applies to everything from automotive suspension brackets to aerospace fuselage sections).

Press Brake Bending

How it works: A hydraulic or mechanical press forces sheet metal over a shaped die, creating a bend at a precise angle.

• Bend angle accuracy: ±0.5-1.0° typical
• Materials: All ductile metals (steel, aluminum, stainless, copper)
• Thickness range: 0.5-10 mm typical (thicker possible with larger equipment)
• Bend radius: Minimum ~0.5-1.0 mm depending on material and thickness
• Cost: Moderate die costs ($100-$1,000); low per-part
• Lead time: 7-14 days for custom die; 3-5 days for bending

Key strength: Fundamental technique; used on >90% of sheet metal parts

Design rule: Avoid bends with radius less than 1× material thickness (risk of cracking in hard materials).

Deep Drawing

How it works: A punch forces sheet metal into a shaped die cavity, creating a cup or box shape in one or multiple strokes.

• Complexity: Single-draw for simple cups; multi-draw for tall or complex shapes
• Tolerances: ±0.1-0.2 mm (dimension-dependent)
• Speed: Fast once die is made (seconds per part)
• Cost: High die costs ($3,000-$15,000+); very low per-part for volume
• Best for: Enclosures, housings, automotive parts, high-volume production (500+)
• Lead time: 2-3 weeks for die + 5-7 days for production

Key strength: Complex 3D geometry in one operation; excellent for volume

Metal Spinning

How it works: A rotating mandrel (form block) shapes sheet metal against it using hand or hydraulic tools. Semi-manual process.

• Best for: Cylindrical or radial-symmetric parts (wheels, cones, domes, bezels)
• Tolerances: ±0.5-1.0 mm
• Speed: Slower than press brake (1-5 min/part depending on complexity)
• Cost: Low tooling ($500-$2,000); moderate labor
• Lead time: 10-14 days
• Volume: Ideal for 10-500 pcs (sweet spot)

Key strength: No costly dies; flexible for custom shapes; excellent for prototypes and low-volume production

Other Forming Techniques

Stamping: High-speed, high-pressure forming using hardened steel dies - the preferred process for automotive volume production (millions of parts/year). Die costs are substantial ($5k-$50k+), but cost-per-part becomes unbeatable at 5,000+ units. Lead time: 1-3 weeks for dies, 2-4 days for stamping production.

Roll Forming: Continuous bending of sheet metal through a series of rollers, creating uniform profiles (channels, angles, tubes). Best for long straight sections; high setup, very low per-part at volume.

Forming Technique Comparison

Technique	Complexity	Setup Cost	Per-Part Cost	Best Volume	Lead Time
Press Brake Bending	Low-Medium	Low-Moderate	Low	1-10,000 pcs	3-5 days
Deep Drawing	High	High ($3k-$15k+)	Very Low	500-100,000 pcs	2-3 weeks (die) + 5-7 days
Metal Spinning	Medium	Low-Moderate	Low-Medium	10-500 pcs	10-14 days
Stamping	High	Very High	Very Low	5,000+ pcs	1-3 weeks (die) + 2-4 days

3. Joining Techniques: Connecting Parts Permanently

Once pieces are cut and formed, they must be joined. The technique affects strength, appearance, corrosion resistance, and cost. Aerospace and medical applications typically demand TIG welding for superior penetration control, while general industrial work often uses faster MIG processes; arc welding types vary by application requirements.

MIG Welding (GMAW)

How it works: An electrode wire is fed continuously, melting into the joint while a shielding gas protects the weld pool from oxidation.

• Strength: High - parent metal strength for ductile materials
• Speed: Fast (good for high-volume)
• Best for: Steel, stainless, aluminum; most common industrial choice
• Appearance: Functional; visible bead, post-weld grinding often needed for aesthetics
• Cost: Moderate equipment; moderate labor
• Certifications: ISO 3834, AWS D1.3 (carbon steel), AWS D1.2 (aluminum)

Quality note: Weld quality depends heavily on operator skill. Verified factories use certified welders and quality control (visual inspection, X-ray for critical parts).

TIG Welding (GTAW)

How it works: A tungsten electrode creates the arc; filler rod is added manually; inert gas (argon) shields the weld.

• Strength: Very high - excellent penetration and control
• Speed: Slower than MIG (requires skilled operator)
• Best for: High-precision, aerospace, medical device parts; difficult-to-weld materials (titanium, stainless)
• Appearance: Superior - smooth, aesthetic welds; minimal post-weld cleanup
• Cost: Higher labor (skilled operator); slower throughput
• Certifications: AWS D17.1 (specification for aerospace TIG welding)

Quality note: TIG is preferred for aerospace and medical applications; documented in AS9100 and ISO 13485 certified factories.

Spot Welding

How it works: Two copper electrodes clamp sheet metal and pass high current, melting a small spot where sheets overlap.

• Best for: Joining multiple thin sheets (0.5-2 mm); automotive body panels; volume production
• Speed: Very fast (one spot per second possible)
• Strength: Adequate for shear loads; limited in tension
• Cost: Low per-part
• Limitation: Not suitable for aesthetic or high-strength applications

Riveting

How it works: A rivet (solid metal pin) is inserted through aligned holes and deformed on the far end, creating a permanent joint.

• Strength: Good for shear; acceptable for tension
• Best for: Aerospace (structural assemblies), where weld heat might damage adjacent materials or appearance matters
• Cost: Low - no special equipment; rivets are inexpensive
• Appearance: Visible rivets; functional aesthetic common in aerospace
• Certifications: Common in AS9100 aerospace work; documented rivet specifications (MS standards)

Other Joining Methods

Adhesive bonding: Structural adhesives bond metals for aerospace/medical. High strength; requires surface prep. Lead time: 24 hours cure minimum.

Brazing/soldering: Lower-temperature joining; limited strength. Used for specific applications (art, jewelry, some electronics).

Joining Technique Comparison

Technique	Strength	Speed	Skill Required	Cost	Best Application	Certifications
MIG	High	Fast	Moderate	Low-Moderate	General fabrication, volume	ISO 3834, AWS D1.3
TIG	Very High	Slow	High	Moderate-High	Aerospace, medical, precision	AWS D17.1, AWS D1.2
Spot	Moderate	Very Fast	Low	Very Low	Automotive panels, thin sheet	N/A (production standard)
Riveting	Good-High	Moderate	Moderate	Very Low	Aerospace structures	AS9100 (documented)

4. Post-Processing & Finishing Techniques: Protection & Aesthetics

Raw fabricated parts require finishing for corrosion resistance, appearance, and functionality. The choice depends on environment, functional requirements, and aesthetic standards. Factors that determine whether powder coating, anodizing, electroplating, or other finishes best serve your part.

Powder Coating

How it works: Dry powder is electrostatically sprayed onto parts, then heated in an oven to form a continuous polymer film.

• Thickness: 50-150 micrometers typical
• Protection: Excellent corrosion resistance (10-15+ years depending on environment)
• Appearance: Smooth, uniform color; matte or glossy options
• Cost: Low-Moderate per-part
• Lead time: 3-5 days
• Best for: Consumer/industrial parts where aesthetics matter
• Certifications: ISO 12944 (corrosion protection), FDA compliance for food contact (with special powders)

Advantage: Environmentally friendly (zero VOC); no liquid waste.

Anodizing (Aluminum Only)

How it works: Aluminum is immersed in an acid bath with electrical current, forming a thick oxide layer on the surface.

• Types: Type II (decorative, 10-25 µm), Type III (hard anodize, 25-50+ µm)
• Protection: Excellent corrosion resistance; sealing required for salt-spray environments
• Appearance: Silver to gold colors; can be dyed for color
• Cost: Moderate
• Lead time: 2-5 days
• Certifications: MIL-A-8625, ISO 7539

Advantage: Natural to aluminum; no coating buildup; parts remain dimensionally stable.

Electroplating (Nickel, Chrome, Zinc)

How it works: A metal coating is deposited onto a cathode (part) through electrochemical reduction.

• Thickness: Typically 5-25 micrometers
• Protection: Nickel and chrome provide corrosion resistance; zinc for steel
• Appearance: Bright, lustrous; can be matte or dull with processing
• Cost: Moderate-High
• Lead time: 3-5 days
• Certifications: ASTM B633 (electroplated coatings), RoHS compliance required (no hexavalent chromium)

Limitation: Hydrogen embrittlement risk with high-strength steel; requires careful process control.

Passivation (Stainless Steel)

How it works: Stainless parts are immersed in an acid solution (usually nitric or citric) to remove free iron and form a protective oxide layer.

• Protection: Prevents corrosion and rust bloom on stainless
• Cost: Very low (chemical bath)
• Lead time: 1-2 days
• Certifications: ASTM A967, ISO 3882 (stainless passivation standard)

Best for: Medical, aerospace, food-contact applications; mandatory for many certifications.

Mechanical Finishing

Grinding: Removes burrs and sharp edges using abrasive wheels. Cost: $0.50-$2.00 per part depending on extent.

Blasting (sandblast, media blast): Removes surface oxides, burrs, and scale. Prepares surface for coating. Cost: $1.00-$5.00 per part.

Buffing/polishing: Creates smooth, reflective surface. Cosmetic. Cost: $1.00-$3.00 per part.

Finishing Technique Comparison

Technique	Protection	Appearance	Cost	Lead Time	Best For
Powder Coating	Excellent (10-15 yrs)	Smooth, uniform	Low-Moderate	3-5 days	Outdoor, consumer parts
Anodizing (Al)	Excellent	Natural, color options	Moderate	2-5 days	Aluminum, aerospace, electronics
Electroplating	Good (5-10 yrs)	Bright, lustrous	Moderate-High	3-5 days	Decorative, precision electronics
Passivation (SS)	Excellent	Natural stainless	Very Low	1-2 days	Medical, food, aerospace
Grinding/Blasting	Minimal	Functional	Low	1-2 days	Edge finishing, surface prep

5. Aerospace & Regulated Industry Requirements

Industries like aerospace and medical devices impose strict requirements on materials, processes, and documentation.

Critical Certifications

AS9100 (Aerospace Standard): Extends ISO 9001 with aerospace-specific requirements. Mandatory for aircraft structural parts. Factories must document:

• Material traceability (mill certs for every batch)
• First-article inspection reports (FAIRs)
• Nonconformance tracking
• Tool calibration records

ISO 13485 (Medical Devices): Quality management system for medical device manufacturers. Requires:

• Design history files
• Risk management documentation
• Supplier audits and approved vendor lists (AVL)
• Sterility and biocompatibility testing for certain materials

IATF 16949 (Automotive): Quality standard for automotive suppliers. Focus on defect prevention and continuous improvement.

In-House Finishing Capabilities

Top-tier Chinese sheet metal factories offer integrated finishing:

• Powder coating lines: Automated application and oven curing
• Anodizing tanks: Type II and Type III capability
• Electroplating: Nickel, chrome, zinc
• Passivation: Stainless steel processing
• Grinding/deburring: Manual and automated

Advantage: Eliminating secondary sourcing reduces lead time and risk. A single factory handles cutting, then bending, then welding, then finishing.

Quality Control Standards

• ISO 9001: General quality management; baseline for all factories
• ISO 3834: Welding quality standard (critical for aerospace/automotive)
• First-article inspection (FAI): Industry standard before production release; 30-100 parts inspected per spec
• SPC (Statistical Process Control): Ongoing defect trending and corrective action

Red flag: Factories claiming they're "ISO certified" but cannot produce mill certificates, weld documentation, or first-article reports are likely non-compliant.

How to Choose the Right Sheet Metal Fabrication Technique

1. Part Geometry Analysis

Ask yourself:

• Is it flat or 3D?
• How many bends?
• Are there holes, cutouts, or complex shapes?
• What tolerances do critical dimensions require?

Decision tree:

• Flat with few bends (0-3): Press brake bending is sufficient. Lead time: 3-5 days.
• Multiple bends + holes: Laser or plasma cutting + press brake bending. Lead time: 5-10 days.
• 3D shapes (boxes, cups, domes): Deep drawing or metal spinning. Lead time: 10-14 days (spinning) or 2-3 weeks (drawing die).
• Cylindrical/radial symmetry: Metal spinning preferred. Lead time: 10-14 days.

2. Volume & Cost Optimization

Volume	Recommended Technique	Cost Impact	Lead Time
1-10 pcs (prototype)	Waterjet/laser + press brake	High per-part	7-10 days
10-50 pcs	Laser + press brake	Medium per-part	7-10 days
50-500 pcs	Laser + press brake + spin/draw	Medium per-part	10-14 days
500-5,000 pcs	NC punch (if high-volume repeat) + press brake + deep draw	Low per-part	2-3 weeks (die) + 5-7 days
5,000+ pcs	Stamping (if justified by volume)	Very low per-part	1-3 weeks (die) + 2-4 days

Cost rule of thumb: At 1,000 identical parts, NC punch or stamping breaks even on tooling costs vs. laser cutting.

3. Material & Tolerance Compatibility

• Laser cutting: Steel, aluminum, stainless up to ~6 mm. Tolerances: ±0.1 mm.
• Waterjet: Any thickness, any metal. Tolerances: ±0.1-0.2 mm. Best for thick or exotic materials.
• Press brake bending: All metals. Tolerances: ±0.5-1.0° angle (±0.1-0.3 mm on flat dimensions).
• Deep drawing: Ductile metals. Tolerances: ±0.1-0.2 mm. Not suitable for brittle materials.
• Welding: Steel, stainless, aluminum, titanium. Strength depends on process (MIG < TIG < spot-weld for shear).
• Anodizing: Aluminum ONLY.
• Electroplating: Primarily steel and copper alloys.
• Passivation: Stainless ONLY.

Planning rule: Choose material first, then technique. A titanium part cannot be anodized; a deep-drawn part cannot use brittle materials.

Sourcing Sheet Metal Fabrication From Verified Factories

Where China's Factories Are Concentrated

Jiangsu Province (Suzhou, Wuxi, Changzhou):

• Strength: Precision sheet metal fabrication; aerospace/automotive focus; large factories
• Best for: Tolerance-critical parts, aerospace/medical
• Lead time: Standard (5-10 days typical)

Guangdong Province (Shenzhen, Dongguan, Foshan):

• Strength: Volume production; large-scale stamping; electronics housings
• Best for: High-volume, less precision-critical parts
• Lead time: Fast (3-7 days for high-volume runs)

Zhejiang Province (Hangzhou):

• Strength: Mixed facilities; custom metal spinning; some deep-draw capability
• Best for: Moderate volumes; custom shapes
• Lead time: 7-10 days typical

Selection tip: For aerospace or medical, prioritize Jiangsu factories (higher certification density, more rigorous process control). For volume consumer parts, Guangdong is faster and cheaper.

How to Evaluate Factories for Each Technique

Before requesting a quote, assess the factory:

1. Equipment check:

• For laser cutting: Laser power (2-4 kW for thin sheet)
• For press brake: Max tonnage and bed length (affects max bend dimensions)
• For deep drawing: Number of draw stations
• For welding: Type of welding equipment (MIG, TIG, spot) and certified operator count
• For finishing: In-house coating or anodizing capability?

2. Certifications:

• ISO 9001 (baseline)
• ISO 3834 or AS9100 (if welding)
• ISO 13485 (if medical)
• IATF 16949 (if automotive)

3. Documentation:

• Can they provide mill certificates for materials? 
• Do they perform first-article inspection?
• Can they show weld procedure specifications (WPS)?
• Do they maintain statistical process control (SPC) charts?

4. Communication & Lead Time:

• Response time to quote requests (24 hours? 3 days?)
• Clarity of technical questions (do they ask about material specs, tolerances, finishing?)
• Willingness to discuss NDA and IP protection?

NDA & IP Protection Workflow

Three-tier NDA approach:

1. Platform NDA: Haizol handles RFQ routing. Factory signs Haizol's standard NDA covering all Haizol-routed projects.
2. Mutual NDA: You and factory sign a bilateral agreement for sensitive designs (optional for higher IP risk).
3. Custom buyer NDA: Enterprise-level agreement for highly proprietary work (aerospace, medical, consumer brands).

Best practice: Always use at least Platform NDA for CAD file sharing. This is standard for Haizol's verified factories.

Getting Quick, Accurate Quotes

24-hour multi-quote process:

1. Prepare RFQ package:

• CAD file (PDF or STEP format)
• Material spec (e.g., "aluminum 6061-T6" or "stainless 304")
• Tolerance notes (e.g., "general ±0.1 mm unless noted; tight tolerance on bore: ±0.05 mm")
• Quantity (e.g., "initial prototype: 5 pcs; then 500 pcs in 3 months")
• Finishing (e.g., "powder coat black, ISO 12944 C3")
• Timeline (e.g., "prototype needed by June 15; production by August 1")

2. Submit via Haizol:

• Upload RFQ; Haizol matches capability (cutting, bending, welding, finishing)
• Factories respond with quotes within 24 hours

3. Evaluate quotes:

• Compare price, lead time, and factory certifications
• Ask clarifying questions (any secondary sourcing needed? Is finishing in-house?)
• Consider on-site factory visits to verify equipment and team capability (92.8% satisfaction among participating buyers)

Frequently Asked Questions

What’s the Typical Cost Difference Between Laser and Waterjet Cutting?

For thin steel (≤3 mm), laser is 20-30% cheaper per-part. For thick material (>6 mm) or exotic metals (titanium, hardened steel), waterjet costs 10-20% less because laser cannot process it at all. At prototype volumes (1-50 pcs), waterjet's slightly higher cost per-part is offset by zero material waste.

Can I Combine Different Techniques in One Order?

Yes, standard. Most parts use laser or waterjet cutting, then press brake bending, then MIG welding, then powder coating. One factory with integrated capabilities reduces lead time and cost vs. sourcing each step separately.

How Do Tolerances Affect Cost?

Tight tolerances (±0.05 mm) can increase cost 20-50% due to additional inspection and process control. General tolerances (±0.15 mm) are standard; avoid tighter unless critical for function. Learn more about design-for-manufacturability principles to optimize cost without sacrificing quality.

What’s the Minimum Order Quantity (MOQ) for Sheet Metal Fabrication in China?

No hard MOQ for sheet metal. Haizol's verified factories accept 1 prototype piece. Cost per-part rises at very low volumes, but production-grade quality is maintained.

Is Chinese Sheet Metal Fabrication Safe for Aerospace/Medical Parts?

Yes, if the factory is AS9100 or ISO 13485 certified. These certifications mandate material traceability, documented process control, and independent audits. Non-certified factories are not acceptable for regulated industries.

How Long Does Deep-Drawing Die Fabrication Take?

2-3 weeks typical. Complex multi-draw dies for tall cups or intricate shapes can take 4-5 weeks. This is the longest lead-time component; plan die creation early.

What’s the Difference Between Powder Coating and Electroplating?

Powder coating is thicker (50-150 µm), provides better corrosion protection, and is cheaper. Electroplating is thinner (5-25 µm), brighter/more decorative, and better for precision surfaces where dimensional tolerance matters. Use electroplating only if appearance is critical.

Can I Recycle Sheet Metal Scraps From My Parts?

Yes. Scrap aluminum and steel are sold to recyclers; factories typically factor scrap value into quotes as a small credit. Your quote reflects "material cost - scrap credit."

How Do I Ensure Consistent Weld Quality Across Orders?

Use a factory with ISO 3834 certification and insist on documented weld procedure specifications (WPS). Request visual inspection photos for every order; for critical parts, include third-party weld testing (X-ray, bend test) in your quote.

Source Your Sheet Metal Parts Through Haizol

Sourcing sheet metal fabrication through Haizol is faster and more cost-effective than managing multiple local vendors. Our network of 800,000+ verified factories covers every technique  (cutting, bending, forming, welding, and finishing)  with ISO 9001, IATF 16949, and AS9100 pre-qualification built in. Submit your sheet metal fabrication RFQ and receive 5–10 capability-matched quotes within 24 hours.