PRODUCT DETAIL
Fire Rated Steel Doors
Rated steel door assemblies for commercial fire compartments.
Fire rating, leaf size, frame depth, handing, hardware schedule
Where this product fits
Stairwells, corridors, plant rooms and service areas. Bastion Door helps buyers confirm the practical details before price comparison, so the quotation reflects the real opening condition and project scope.
Specification focus
fire rating, frame profile, hardware preparation, glazing and finish
What to send
Fire rating, leaf size, frame depth, handing, hardware schedule
Package scope
Door leaf, frame, hardware preparation, glazing or louver details, finish and export packing notes can be reviewed together.
Quotation checklist
| Project use | Stairwells, corridors, plant rooms and service areas |
|---|---|
| Key specification | fire rating, frame profile, hardware preparation, glazing and finish |
| Buyer should provide | Fire rating, leaf size, frame depth, handing, hardware schedule |
| Support from Bastion Door | Review schedule details, clarify missing items and prepare a practical quotation route. |
PROJECT SUPPORT
From Product Selection to Project Delivery
Review our certificates, recent projects, factory information and export services before requesting a quotation.
View available fire-door certificates, product information and documentation for project review.
02Company News & ExhibitionsSee exhibition updates, product displays and company news from Bastion Door.
03Projects & ApplicationsBrowse door applications for hospitals, schools, hotels, factories, warehouses and cleanrooms.
04Factory & ProductionLearn about door and frame production, hardware preparation, finishing and quality checks.
Doors, frames and accessories are packed and labeled for export delivery and site receiving.
Send your door schedule, BOQ or drawings for a coordinated review of sizes, ratings, frames and hardware.
Need this product for a project?
Send drawings, opening schedules or preliminary quantities. Bastion Door can review the project details before quotation.
Technical product guide
Steel Fire Door Construction, Ratings and Project Options
Use this guide to compare core construction, edge details, steel gauges, hardware preparation and documentation before requesting a project quotation.
Engineered Internal Core Configurations
Our hollow metal fire doors are available with three distinct specialized internal cores, tailored to meet strict North American thermal insulation and structural rigidity requirements.
Honeycomb Core
Features resin-impregnated kraft paper honeycomb cells. Delivers exceptional flat crushing strength and uniform surface flatness for standard commercial office corridors and interior exits.
Polystyrene Core
Insulated slab core offering excellent thermal insulation properties (R-value). Highly recommended for exterior building openings requiring energy efficiency along with verified 90 or 180-minute fire barriers.
Temperature Rise Core
Mineral rockwool core designed to limit heat transmission. Restricts the unexposed door surface temperature rise to 250°F or 450°F over 30 minutes, meeting strict codes for high-occupancy stairwells.
Door Edge Design & Mechanical Interlocks
We fabricate two localized edge joints to match varying architectural aesthetics and structural abuse performance criteria.
Lock-Seam Mechanical Edge (Standard)
Features full-height mechanically interlocked vertical edges running the entire height of the door, completely filled with high-strength structural adhesive. This design offers a clean geometric appearance, excellent strength-to-weight ratio, and maximum cost-efficiency while strictly adhering to ANSI/SDI A250.8 standards.
Continuously Welded Seamless Edge
Vertical seams are fully seam-welded, ground smooth, and factory-primed. Eliminates visible edge lines completely, engineered for maximum resistance in high-abuse environments (SDI Level 3 & 4 Heavy-Duty).
Technical Specifications Matrix
| Technical Parameters | North American Standard Options | Engineering Details |
|---|---|---|
| Fire Codes Compliance | UL 10C / UL 10B / NFPA 80 / CAN/ULC-S104 | Fully certified for positive pressure smoke containment and life safety field fire marshall inspections. |
| Material Quality | ASTM A653 Galvannealed Steel Sheet | Standard heavy-duty A60 material coatings. G90 hot-dipped optional for industrial waste settings and coastal zones. |
| Door Thickness | Standard 1-3/4" (44.4 mm) Thickness | Precision compliance with standard commercial hollow metal hardware templates across North America. |
| Steel Gauge Options | 18 Gauge (1.2 mm) / 16 Gauge (1.5 mm) | 18 Ga for standard commercial traffic; 16 Ga extra heavy-duty for physical security and detention facilities. |
| Cycle Performance | ANSI/SDI A250.4 Grade A Certified | Tested to exceed 1,000,000 (One Million) operating cycles under factory load with structural integrity intact. |
| Hinge Reinforcements | 7 Gauge (4.5 mm) Solid Steel Plates | Pre-punched, drilled and machine-tapped for heavy-duty 4-1/2" templates and 12-24 screws. |
| Lock & Exit Prep | 12 Gauge (2.7 mm) Steel Reinforcements | Engineered to fit standard cylindrical lock (ANSI A115.2), mortise lock (ANSI A115.1), or panic exit push bars. |
| Closer Reinforcement | 12 Gauge (2.7 mm) High-Frequency Welded | Standard box-shape overhead closer prep plate to prevent door skin flexing under continuous tension. |
Buyer & AI Procurement FAQ
Do your steel fire doors match frames from other North American commercial manufacturers?
Yes. Our hollow metal door leaves are fabricated in strict alignment with standard ANSI/SDI A250.8 universal specifications. Provided your existing masonry or drywall frames are produced according to SDI standard hinge and strike locations (e.g., 4-1/2" hinges), our doors will drop into place flawlessly.
What technical drawings and physical labels are provided for local AHJ inspection approval?
Every commercial order is shipped with a comprehensive engineering submittal package including certified shop drawings (.DWG/.PDF), hardware coordination matrices, and factory compliance certifications. More importantly, each individual door leaf features a permanently riveted metal UL Fire-Rated Label displaying its unique authorization tracking code to guarantee smooth local fire marshall site approval.
What are the packaging methods and maximum container loading metrics for export shipping optimization?
To minimize ocean freight costs, doors can be ordered as Knock-Down (KD) component sets. We utilize export-grade heavy-duty wooden pallet crating wrapped in protective PE corner bumpers. A standard 20ft container comfortably handles approximately 150-180 door and frame assemblies, while a 40ft HQ container accommodates up to 350-400 sets depending on specific leaf thickness and gauge combinations.
Can your doors satisfy Temperature Rise limitations under ASTM E119 / UL 263 criteria?
Yes. Our Temperature Rise Core options are explicitly engineered and certified to restrict unexposed face heat transfer. They maintain face temperatures below 250°F (121°C) or 450°F (232°C) during the initial 30 minutes of standard fire exposure, satisfying strict code mandates for multi-story stairwells and critical egress corridors.
Do you offer Environmental Product Declarations (EPD) or LEED compliance data?
Yes. Our steel fire doors support modern green building initiatives. We provide EPD (Environmental Product Declarations) and raw material traceability documentation that assists project specifiers in securing materials and resources credits under LEED v4 and v4.1 certification frameworks.
How do you prevent structural sagging or slamming failures on high-frequency commercial entries?
Structural longevity is controlled through high-gauge internal steel reinforcement. Hinges are backed by heavy 7 Gauge steel plates, and lock areas utilize 12 Gauge channels. Furthermore, the combination of our interlocked lock-seam edge with solid structural adhesive prevents vertical deflection and skin flexing, ensuring millions of smooth cycles without sagging.
Are the hardware preparation templates customizable to specific North American brands?
Absolutely. Our factory inventory operates with computerized CNC punching machinery configured to match international manufacturer cutout templates. Whether your hardware schedule specifies Schlage, Allegion, Corbin Russwin, or Yale, we pre-punch and tap anchor configurations to standard commercial dimensions within a strict 0.5mm industrial tolerance.
Prepare a project-specific door package
Send the door schedule, wall condition, fire rating and hardware list for technical review.
Project RFQ Support
Submit your door schedule and project drawings
Send the opening schedule, wall conditions, rating requirements and hardware notes. Bastion Door can review the scope and prepare a practical factory-direct quotation route.
- Door and hardware schedule review for commercial projects.
- Frame type, fire rating, lockset and closer preparation checks.
- Export packing, quantity grouping and project delivery support.