SDI & HMMA Aligned

STEEL DOOR
MANUFACTURER

Euwoo is a steel door manufacturer and steel door supplier producing hollow metal doors and frames for commercial and industrial specifications. From 18 gauge standard duty to 14 gauge maximum duty, we build door and frame assemblies that are easy to install, consistent to your hardware templates, and packaged for export.

SDI and HMMA aligned construction

Specification-driven fabrication with clear construction details and labeling.

18/16/14 gauge coverage

Choose the right duty level for each opening.

Doors, frames, and assemblies

Complete assemblies including prehung units for faster installation.

Request a Quote Browse Steel Door Types
18-14 Gauge Range
7 Product Categories
25-45 Days Lead Time
ISO 9001 Certified
ISO
9001
UL
10C
SDI
HMMA
CE
Marked
Product Range

EXPLORE STEEL DOOR TYPES AND DUTY LEVELS

This collection is organized the way B2B buyers source: by application (commercial and industrial), by delivery format (frames and prehung assemblies), and by duty level (18, 16, and 14 gauge).

Commercial steel doors for building corridors
By Application

Commercial Steel Doors

Standard commercial building applications

Commercial steel door programs prioritize consistent fit, clean appearance, and compatibility with common hardware. Use this category for offices, retail, multifamily corridors, schools, and general building interiors.

  • • General commercial corridors and tenant spaces
  • • Door schedules with mixed hardware sets
  • • Distributor stock programs and repeat projects
Explore Commercial Doors →
Industrial steel doors for warehouses
Heavy Duty

Industrial Steel Doors

Heavy-duty industrial environments

An industrial steel door is specified for abuse resistance, security, and hardware durability in harsh traffic patterns. Use for factories, warehouses, logistics hubs, utility rooms, and high-cycle service doors.

  • • High-traffic and high-abuse openings
  • • Back-of-house and service corridors
  • • Warehouses, plants, and critical rooms
Explore Industrial Doors →
Prehung steel door with matching frame
Ready to Install

Prehung Steel Doors

Ready-to-install door and frame units

Prehung units ship as matched assemblies with hinge locations and clearances controlled before reaching the jobsite. Specify prehung for repeatable steel door with frame packages.

  • • Projects needing faster installation and consistent fit
  • • Multi-location programs and repeat builds
  • • Contractors preferring controlled hinge and clearance setup
Explore Prehung Doors →
Welded steel door frames ready for shipping
Frames Only

Steel Door Frames

Welded and knocked-down frame options

Frames are where many steel door issues start. This category covers welded and knocked-down frames, common anchoring approaches for drywall and masonry conditions.

  • • Frame-only projects and replacements
  • • Coordinating anchors to wall type
  • • Projects requiring consistent frame dimensions
Explore Steel Frames →

By Steel Gauge / Duty Level

18 gauge steel doors for standard duty use
Standard Duty

18 Gauge

~1.2mm

Standard duty commercial interiors where budgets and weight matter, with a professional hollow metal look.

Explore 18 Gauge →
Popular
16 gauge steel doors for heavy duty openings
Heavy Duty

16 Gauge

~1.5mm

Heavy duty applications with higher traffic, more abuse, or heavier hardware. Strong middle ground for durability.

Explore 16 Gauge →
14 gauge steel doors for maximum duty security
Maximum Duty

14 Gauge

~1.9mm

Maximum duty for severe abuse, security risk, or demanding industrial use. Mission-critical openings.

Explore 14 Gauge →

Send These Details for a Faster and Cleaner Quote

  • Door schedule or opening list (sizes, opening marks, quantities)
  • Handing, swing, and any special clearances
  • Wall type and frame condition (stud/drywall, masonry, concrete)
  • Hardware sets (hinges, strikes, closers, panic devices)
  • Duty level by opening (standard, heavy, maximum)
  • Performance requirements (fire rating, smoke, security)
  • Finish requirement (prime for site paint, powder coat color)
  • Ship-to location and required date
Request a Quote View Certifications
Technical Guide

STEEL GAUGE OVERVIEW: 18 VS 16 VS 14

Gauge selection affects dent resistance, hardware loads, and long-term stability. Match door gauge to opening conditions: traffic, abuse risk, hardware type, and environment.

Key Takeaways

18

18 gauge is commonly used for standard duty commercial interiors when properly reinforced.

16

16 gauge is a common choice for heavy duty openings, higher traffic, and heavier hardware.

14

14 gauge is typically selected for maximum duty, high-abuse, and security-sensitive openings.

Pair door gauge with an appropriate frame system and hardware reinforcements to avoid alignment issues.

18 Gauge (Standard Duty) ~1.2mm

Best for: Many commercial interior openings where abuse risk is moderate and hardware loads are standard.

Tradeoffs: Lower weight and cost can improve handling and shipping, but reinforcement strategy becomes more important for high-cycle hardware.

Popular
16 Gauge (Heavy Duty) ~1.5mm

Best for: Openings with higher traffic, service corridors, institutional use, and broader use of closers and panic hardware.

Tradeoffs: Higher dent resistance and stability under load. Often a strong middle ground for long-term alignment.

14 Gauge (Maximum Duty) ~1.9mm

Best for: Maximum duty environments, high-abuse industrial openings, and security-focused schedules.

Tradeoffs: Highest durability for hollow metal. Added weight impacts handling and shipping coordination.

Gauge Typical Thickness Duty Level Common Environments Practical Notes
18 gauge ~1.2 mm Standard Office interiors, tenant spaces, light-use commercial areas Specify proper reinforcements for closers and panic devices.
16 gauge ~1.5 mm Heavy Institutional corridors, back-of-house commercial, service doors Good balance of durability and cost; preferred for higher-cycle hardware.
14 gauge ~1.9 mm Maximum Industrial facilities, high-abuse areas, security-sensitive rooms Heavier handling; confirm frame, anchors, and hardware prep.

Need help choosing gauge by opening? Send your door schedule and we will recommend a practical approach.

18 Gauge Doors 16 Gauge Doors 14 Gauge Doors
Quality Assurance

Standards, Certifications, and Documentation

Steel door buying is rarely only about the door. Contractors, architects, and procurement teams need proof of compliance, clear construction details, and consistent labeling. We support this with a documentation-first approach.

ISO

ISO 9001:2015 Quality Management

Quality system

Supports consistent fabrication and repeatable outputs for multi-opening and repeat programs.

UL

UL 10C Fire-Rated Door Options

Fire test program

Support for specified fire-rated configurations, label and documentation alignment.

SDI

SDI and HMMA Aligned Conventions

Industry standards

Specification-driven construction details and schedule-based labeling to reduce coordination errors.

View Certifications Request a Quote

Typical Submittal Documentation Package

  • Product description with construction assumptions (gauge, door type, frame type, finish)
  • Door and frame detail drawings or shop drawings
  • Hardware preparation notes (hinge, strike, closer, panic device prep)
  • Labeling and packaging plan mapped to opening marks
  • Certification and listing references where required

Quality Control Focus Areas

  • Dimensional control and consistent clearances
  • Hardware reinforcement alignment
  • Frame and anchor coordination
  • Finish consistency for repeat projects
  • Export-ready packaging
Our Advantage

WHY CHOOSE EUWOO FOR STEEL DOOR PROGRAMS

The real differentiator is how reliably the product matches the schedule: gauge and duty level, frame system, hardware prep, labeling, and documentation.

Multi-Gauge Expertise

We routinely produce 18, 16, and 14 gauge doors and help you match the door, frame, and reinforcements to traffic and abuse levels.

Complete Door + Frame Assemblies

We supply complete door and frame assemblies, including prehung units, so your installer receives a consistent steel door with frame system.

Specification-Driven Manufacturing

Our manufacturing process follows SDI and HMMA guidelines. You receive submittal-ready cut sheets, prep notes, and labeling guidance.

Predictable Programs

Predictable lead times and repeatable construction for single sites or multi-location programs with standardized fabrication steps.

Quality System & Certifications

ISO 9001 quality system with fire-rated configurations supported by UL 10C. CE and BS 476 programs available for international projects.

Factory-Direct Terms

Wholesale steel doors programs with consistent pricing, reasonable MOQs, and labeling that matches your internal SKU or project opening marks.

What to Expect When You Work With Us

1

Clear RFQ review with confirmed assumptions

2

Engineering support for reinforcement coordination

3

Submittal-friendly documentation

4

Export-ready packaging with labeling

5

Responsive communication throughout

Applications

WHERE STEEL DOORS PERFORM BEST

Steel doors are selected when the opening must stay dependable over time: frequent traffic, heavy hardware, security expectations, or strict inspection requirements.

Commercial Offices, Retail, and Mixed-Use

Commercial

Challenge: Many openings with varied hardware sets, tight schedules, and high expectations for consistent appearance.

Solution: Schedule-based labeling, consistent hardware reinforcement, and frame strategy matched to wall conditions.

Outcome: Contractors reduce field rework, property teams get consistent operation across tenant areas.

Industrial Plants, Warehouses, and Logistics

Industrial

Challenge: Openings exposed to impact, carts, pallets, and high-cycle use. Hardware adds load to frames.

Solution: Heavier gauge choices, robust reinforcement for high-cycle hardware, and frame/anchor coordination.

Outcome: Durable openings that maintain alignment and reduce maintenance calls.

Education and Public Buildings

Institutional

Challenge: Durability, safety, and repeatable performance across many openings with abuse resistance requirements.

Solution: Duty-level plan by opening type with consistent prep for common hardware sets.

Outcome: Fewer punch-list issues at turnover and predictable maintenance patterns.

Healthcare, Labs, and Controlled Environments

Healthcare

Challenge: Dependable operation, controlled access, and consistent closing with access control hardware.

Solution: Coordinate hardware prep early including reinforcements for electrified devices and closers.

Outcome: Smoother commissioning and fewer conflicts between hardware and access control.

Government, Utilities, and Critical Infrastructure

Security

Challenge: Security-sensitive openings, strict submittal review, and inspection-driven requirements.

Solution: Start with specification: duty level, security requirements, and rating needs. Align construction accordingly.

Outcome: Clearer documentation, fewer change orders, and long-term reliability.

Scenario Typical Priority Common Approach
Standard commercial interiors Cost, appearance, consistent fit 18 gauge where appropriate with correct reinforcements; schedule-based labeling.
High-traffic corridors and service doors Durability and hardware stability 16 gauge for heavier duty; reinforced prep for closers and panic hardware.
High-abuse or security-sensitive areas Maximum durability and control 14 gauge with robust reinforcement; confirm frame/anchor plan early.
Frame Guide

STEEL DOOR FRAME SYSTEMS

Frames determine whether the opening installs cleanly and stays aligned. We treat the frame as part of the system: door construction, frame type, anchoring, and hardware reinforcements are coordinated to the schedule.

Welded Steel Frames

Best for: Projects that want rigidity and faster jobsite assembly, and openings where alignment and durability are critical.

Considerations: Shipping size and freight planning; confirm receiving constraints and site handling before choosing welded frames.

Rigid Stable Alignment Fast Assembly

Knock-Down (KD) Frames

Best for: Large projects, tight freight constraints, and jobsites that prefer assembling frames on-site.

Considerations: Field assembly quality matters; clear instructions and correct fasteners help ensure consistent results.

Shipping Efficient Flexible Handling Large Projects
Frame Type Advantages Tradeoffs Typical Use
Welded Rigid, stable alignment, faster jobsite assembly Larger shipping footprint, freight planning required High-traffic commercial corridors, industrial service doors
Knock-down (KD) Shipping efficiency, flexible handling for large projects Requires careful field assembly for best alignment Large multi-opening projects, distributors, constrained access sites

Wall Construction & Anchor Coordination

Steel Stud / Drywall

Confirm: Stud gauge, wall thickness, frame installed before or after board.

Anchor choice and frame throat size must match the wall to avoid twist and clearance issues.

Masonry / Block

Confirm: Masonry type, grout condition, and opening tolerance.

Anchors and installation sequence drive long-term stability and alignment.

Concrete

Confirm: Embedment expectations and required reinforcement at the opening.

Correct anchor planning reduces field drilling and alignment problems.

Customization

Customization Options for Steel Doors

Steel door sourcing works best when customization is controlled. We help you standardize a core configuration for repeatability, then add project-specific requirements in a structured way.

Door Construction & Duty Level

  • • 18/16/14 gauge selection by opening duty level
  • • Reinforcement packages for closers and panic devices
  • • Edge and seam choices as specified

Openings & Door Styles

  • • Single or double doors; handing and swing confirmation
  • • Vision lites and glass prep by schedule
  • • Louvers and cutouts for airflow

Frames & Assemblies

  • • Welded or KD frames based on shipping preference
  • • Anchors matched to stud, masonry, or concrete walls
  • • Prehung assemblies for consistent fit

Hardware Prep Support

  • Prep to your hardware templates and door schedule notes
  • Reinforcements aligned to specified hardware set
  • Access control and electrified hardware prep
  • Consistent labeling to opening marks

Finish & Appearance Options

  • Shop primer for site painting
  • Powder coat color control for repeat builds
  • Protective packaging to reduce scratches
  • Private label packaging available

Commercial Terms

MOQ:

20-50 door sets for common configs

Lead Time:

25-45 days typical for export

Case Studies

Practical Outcomes from Steel Door Programs

B2B steel door sourcing is judged by outcomes: fewer field adjustments, fewer returns, cleaner inspections, and predictable reorders.

Door Distributor

Standardizing core range for contractors

Profile: Regional distributor supplying multiple contractors across commercial tenant improvement projects.

Challenge: Frequent returns and field rework caused by inconsistent hardware prep and unclear labeling.

Delivered: Standardized core configurations with consistent prep, schedule-based labeling, and documentation package.

Outcome: Reduced mis-ship issues, simplified reorders, improved contractor confidence.

Industrial Facility

Upgrading high-abuse service openings

Profile: Maintenance team managing warehouses and service corridors with frequent cart and pallet traffic.

Challenge: Openings experienced dents, alignment drift, and recurring closer and latch issues.

Delivered: Duty-level plan with heavier configurations, reinforcement alignment for high-cycle hardware.

Outcome: Fewer maintenance callbacks, reduced operational disruption.

Public Building

Tight inspection requirements

Profile: Contractor delivering multi-opening public project requiring structured documentation.

Challenge: Slow submittal reviews due to unclear assumptions and staging inefficiencies.

Delivered: Documentation-first package with clear construction descriptions, prep notes, and labeled opening marks.

Outcome: Smoother submittal review, more efficient installation staging.

Common Success Factors

1

Early schedule finalization to lock hardware prep

2

Clear agreement on duty levels by opening

3

Frame selection matched to wall construction

4

Labeling tied to opening marks

5

Documentation for faster approvals

FAQ

Steel Doors FAQ

Common questions from contractors, distributors, and procurement teams sourcing hollow metal products at scale.

Euwoo operates as a steel door manufacturer with factory-direct production and export support. Construction details, hardware prep, and labeling can be controlled at the source. We quote from your door schedule, confirm assumptions, and produce to confirmed details, reducing field modification and making reorders easier.

The difference is driven by duty level and environment. Commercial steel doors are for offices, retail, and schools where appearance matters. Industrial doors are for warehouses and plants with higher abuse risk. Industrial schedules may require heavier gauge and tighter frame coordination.

Start with how the opening will be used. 18 gauge for standard duty commercial interiors, 16 gauge for heavier duty corridors and service openings, 14 gauge for high-abuse or security-sensitive openings. Also consider the frame: many alignment issues come from frame selection rather than door gauge alone.

Yes. We supply doors only, frames only, or complete assemblies including prehung units. Many contractors choose steel door with frame packages for consistent hinge locations, controlled clearances, and faster installation. Provide opening sizes, wall type, handing, and hardware set for accurate quoting.

We support fire-rated steel door configurations with recognized listing programs such as UL 10C, with documentation and labeling aligned to specified requirements. Share the required rating, hardware notes, and any glazing requirements early for feasibility confirmation.

Yes. Hardware prep reduces field work and avoids misalignment issues. We prep for hinges, strikes, closers, and panic devices based on your door schedule. For electrified hardware and access control, confirm requirements early so reinforcements, raceways, and transfer prep can be coordinated.

A door schedule with opening marks, sizes, handing, quantities, wall types, and hardware sets. Include duty level expectations or traffic/abuse risk description. MOQ depends on standardization: common sizes start at lower minimums, while unique openings may require higher MOQs.

Typical production lead time is 25-45 days after final approval, with faster timelines for standardized configurations. Export packaging and labeling are planned to reduce transit damage. Share destination, trade terms, and receiving constraints for packaging recommendations.

For export orders, we protect corners, edges, and finished surfaces, separating frames to prevent rubbing. Labeling to opening marks helps receiving teams stage correctly. For powder-coated finishes, protection becomes even more important. Share your receiving process for proper palletization.

Yes. We support submittal-ready documentation that clearly states construction assumptions and aligns hardware prep to the door schedule. When documentation matches the schedule and labeling matches opening marks, contractors install faster. Include specification sections with your RFQ.

Get Started

Request a Quote from a Steel Door Manufacturer

Get factory-direct pricing and a schedule-driven quote you can rely on. Send your door schedule or opening list, and we will confirm gauge, frame system, hardware prep, finish, labeling, and any compliance documentation needs before production.

  • Fast, assumption-clear quotes based on your schedule
  • 18/16/14 gauge coverage with duty-level guidance
  • Doors, frames, and prehung assemblies available
  • Hardware prep and reinforcement coordination
  • Export-ready packaging and opening-mark labeling
Request a Quote View Certifications
Steel doors ready for export shipment
25-45 Days Typical Lead Time