Steel Swing Door
The SEPPES steel rolling doors are constructed using steel of superior quality which provides maximum strength and corrosion resistance. All of our steel doors are easy to operate. The steel doors are fitted with various safety mechanisms such as anti-collision sensors and automatic stopping devices, which enable the doors to operate without causing injury to any person or damage to any object. No matter the application, like protecting a factory, a store, a warehouse, or a garage, our steel rolling doors can fulfill your requirement, giving a brilliant combination of safety, functionality, and easy access.

SEPPES: Your Premier Manufacturer Of Double Steel Doors
SEPPES is a leading manufacturer of high-quality steel swing doors, committed to providing exceptional products that enhance efficiency and security in various industries. Drawing inspiration from cutting-edge technology, we consistently deliver reliable and innovative door solutions.
Core Technology Of Steel Swing Door
- Durability: High-quality steel construction ensures long-lasting strength.
- Smooth Operation: Easy to open and close, ideal for high-traffic areas.
- Versatile: Perfect for use in warehouses, factories, hospitals, and more.
- Customizable: Available in various sizes and finishes to suit your needs.
- Safety: Meets safety standards for secure and reliable operation.
- Low Maintenance: Requires minimal upkeep, reducing long-term costs.
Steel Swing Door – Technical Specifications
| Features | Steel Swing Door |
|---|---|
| Thickness | 50mm / 100mm (customizable) |
| Panel Type | Color-coated galvanized steel (Color GI) or stainless steel (SUS Panel) with polyurethane foam core for insulation |
| Lock Type | Handle lock, globular lock, split lock, push-type panic bar, SUS handle (optional fingerprint or digital lock) |
| Controlling Type | Exposed door closer, hidden door closer, interlocking system, compatible with access control systems |
| Application Fields | Food processing, pharmaceutical plants, electronic cleanrooms, laboratories, logistics centers, warehouses |
| Door Frame Material | High-strength galvanized steel or stainless steel, corrosion-resistant and durable |
| Surface Finish | Powder coating / Electro-polished / Brushed stainless steel |
| Optional Vision Window | Double-layer tempered glass viewing window (square or round shape optional) |
| Glass Properties | Tempered glass / Fireproof glass / Explosion-proof glass / Dimmable glass (optional) |
| Opening Direction | Single swing or double swing, left or right opening optional |
| Sealing Performance | Equipped with EPDM sealing strips around the frame, ensuring excellent air-tightness and sound insulation |
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Applications of Steel Swing Door
Steel swing doors deliver robust, reliable access that enhances security and efficiency in warehouses, factories, cleanrooms, and commercial buildings—just a few examples. Thanks to heavy-gauge steel panels, reinforced hinges, and precise locking systems, these doors ensure excellent durability, impact resistance, and thermal insulation for both interior and exterior applications. They stand out especially within the application zones listed below.
Leading Steel Roll Up Door Manufacturers in China - SEPPES
Our company SEPPES is a professional Industrial Doors manufacturer. Products exported to 70 countries. Our products have multiple technical patents and EU CE certification with rich experience in fast shutter doors, rapid doors, high-speed roll-up doors, high-speed spiral doors, high-speed stacking doors, and PVC roller doors.
Why Choose Us
Here are 4 main reasons why many foreign buyers wholesale steel Swing door from SEPPES Factory in China, along with fair data parameters for each point:
Global export credibility
Evidence: 65+ countries, thousands of clients.1 Reference: 40–60 countries; 3k–5k clients; 10–15 yrs export.
Cost and scale advantage
Evidence: Rising steel exports signal capacity and efficiency. Reference: 8–15% unit savings at 200+ MOQ; 15–30 day lead time.
Evidence: Wide catalogs, configurable specs (glazing, finishes).1 Reference: 10–20 models; ±2–3 mm tolerance; 6–12 colors; 60–120 min fire rating.
Quality and compliance support
Evidence: Advanced equipment, pro teams, global clients imply QA. Reference: ISO 9001; CE DoP; <1.5% DOA defect; 1–3 yr warranty; 3–5 QC stages.
Other Types of Industrial Doors You May Like
Our Amazing Clients
We have exported to more than 65 countries and regions. Our powerful service internet and installation team helps us build relationships with customers who come from European, the Middle East, South America, and South East Asia.

























We have authentic and authoritative certificates
SEPPES International Trademark Certification
Since our founding, SEPPES has secured trademark registrations across several countries. Each new certification symbolizes growing worldwide recognition of our brand, which, in turn, reinforces our competitive position and expands our influence in international markets.





Welcome to SEPPES's Indsutrial Doors Factories



Frequently Ask Questions
Q : What are steel swing doors and where are they used?
A: Swing doors constructed with steel sheets are very much valued due their durability and security. They are used in commercial and industrial settings, as well as warehouses, hospitals, and even office entryways. The doors’ constructions are extremely sturdy, which helps it to be very useful in high security and high-traffic areas.
Q: What are the standard materials and steel thickness?
A:The majority of steel swing doors are made of cold-rolled or galvanized steel in order to prevent roaring. Steel sheets of doors are normally are compared for thickness, and are made of 1.0-1.5 mm sheets, and steel used for a frames are usually of a slightly thicker gauge and are used for maintaining structural strength.
Q: Are fire-rated versions available?
A:Yes, fire-rated steel doors are available and are convenient satisfying essential building codes. The most common fire resistant capabilities are rated for 30, 60, 90, and 120 minutes of fire exposure, which are proven by testing standards like UL or BS.
Q: How are the doors protected from rust and corrosion?
A: Galvanized steel is powder coated or uses prime paint as a coat, and is said to be very useful as protection for doors. Provides a layer of protection from rust, scratches, and against environmental conditions, which is very helpful in fulfilling a demanding service.
Q: What hardware is compatible with these doors?
A:Swing doors are made from stainless steel and are compatible with various hardware items and accessories like hinges, mortise locks, cylindrical locks, surface-mounted and concealed door closers, panic exit devices, and door closers, along with other accessories for security and accessibility applications.
Q:Can I order custom sizes and what are the typical tolerances?
A:When taking wholesale orders for such doors, they are invariably customized to the buyer’s specification, and fit as “structural openings” of the door frames. Such steel and other composite doors have very tight manufacturing tolerances, usually ±2-3 mm, to ensure that the door closes perfectly.
Q:What insulation and soundproofing options exist?
A:Doors with stainless steel finishes are engineered to have a sound blocker feature that reduces the transmission of sound. They can also be filled with other insulation cores to achieve specific acoustic control such as honeycomb paper, polyurethane foam, or rock wool.
Q:What certifications should I look for?
A:For chrome doors and other types of doors, the reputable suppliers ensure that they operate with ISO 9001, which is the quality control maxim. For other areas of the world, the suppliers provide a CE mark, while for the USA and Canada, the doors carry a UL mark.
Q:What are typical lead times and minimum order quantities (MOQ)?
A:Depending on the volume of the customized and non-customized orders, the lead time is from 20 to 45 days. For customized orders, there is a minimum limit set which, is required to enable the buyer to access the factory-direct price.
Q:What kind of warranty and maintenance is required?
A:A standard warranty covers manufacturing defects for a term of 1 to 3 years. Steel doors are nearly maintenance free. Maintenance is usually confined to thorough cleaning and checking of the doors’ hardware to guarantee operation.
