Stainless Steel Door Hinge-5×4×3 Flag Hinge Heavy Fire-proof door Bulk Supply CHAOLANG
Model:
Stainless Steel -5×4×3 Flag Hinge
Brand:
CHAOLANG
Certifications:
-
Material:
Stainless Steel 201 / 304 / 316 (corrosion-resistant options)
Finish:
SSS (Brushed), PSS (Polished), PVD, PB, AB, AC (multiple finishes available)
Packing:
Standard export carton (2pcs/box, 30pcs/carton, or customized)
Payment Terms:
T/T, D/P
MOQ:
Negotiable (small trial orders & bulk orders supported)
Production Capacity:
200,000 units / month (stable bulk supply for large projects)
design customization
Please fill out the form below to request a quote or to request more information about us. Please be sure to upload customized requirement documents or pictures, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
Please fill out the form below to request a quote or to request more information about us. please be as detailed as possible in your message, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
Why Choose CHAOLANG Stainless Steel Door Hinge-4×3×3-2BB?
Our stainless steel 5×4×3 Flag Hinge is integrally forged from thickened 304 stainless steel. Equipped with reinforced solid pin and double ball bearings, it delivers outstanding load capacity for commercial heavy doors.The material features superior salt spray, rust and wear resistance, resisting deformation and sagging after frequent long-term use.
Tested to withstand over 200,000 opening-closing cycles for commercial and public buildings.
130-MINUTES fire resistance, compliant with North American building codes for fire-rated door installations in hotels, hospitals, and office buildings.
Precision ball bearings reduce friction and noise, ensuring ultra-smooth door movement even under heavy door weight, minimizing wear and extending service life.
Available in SS304/316/201 stainless steel, offering excellent anti-rust and anti-corrosion performance for indoor, outdoor, coastal, and high-humidity environments.
Choose from SSS (brushed), PSS (polished), PVD, matte black, antique brass, and other finishes to coordinate with your door hardware and interior aesthetic.
Suitable for wooden doors, metal doors, steel doors, interior doors, and exterior doors, ideal for residential, commercial, and industrial applications.
Monthly production capacity of 200,000 units ensures reliable delivery for wholesale, engineering, and OEM orders.
Key Specifications
| Product Name | Stainless Steel 5×4×3 Flag Hinge | Material | Stainless Steel 201, 304 or 316 |
| Product Sizes | 127×101.6×3.0mm | Fitting | Flat tip, ball bearing, fix pin, screws |
| Certifications | - | Standard | 200, 000 cycles tested |
| Cycle-test | 200,000 cycles | Suitable for | Metal door, Steel door, Fire-proof door |
| Finish | Satin stainless steel, Polished stainless steel, Polished brass Chrome-plated, Satin chrome-plated, Polished PVD | ||
Frequently Asked Questions
1
Q: Are these hinges fire rated?
A: Yes, our 5×4×3 Stainless Steel Flag Hinge are 120-MINUTES fire rated and suitable for residence and office.
2
Q: What material are the hinges made of?
A: We offer stainless steel 201, 304, and 316 options for different corrosion resistance needs.
3
Q: Can I get customized finishes or logo engraving on this stainless steel door hinge?
A: Yes. We support multiple surface finishes and customized logo laser engraving. OEM & ODM services are available to match your brand style and project decoration requirements.
4
Q: What kind of doors is this 5×4×3 Stainless Steel Flag Hinge suitable for?
A: This 5×4×3 Stainless Steel Flag Hinge fits metal doors, steel doors and fire-rated doors. Perfect for residential offices and large-scale commercial engineering projects.
5
Q: What is your MOQ and how long is the delivery time?
A: We support flexible negotiable MOQ for trial orders and bulk purchases. Standard in-stock orders take 15-20 days, and mass engineering orders can be delivered on time with our 200,000 monthly production capacity.
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Experience seamless assistance from our team of Trade Account Managers with everything from quotes to delivery and everything in between for your project. Our trade experts are here to help.
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+86 18022188333Please complete the details below and then click on Submit and we'll be in contact.
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Contact Person: Mr.LIU
Phone: +86 18022188333
E-mail: zschaolang@outlook.com
E-mail: chaolang188@gmail.com