08 Aug, 2026 Let me tell you something that most people do not realise until it is too late. The hinges on your doors are not all the same. The hinge that works perfectly on your bedroom door will fail within months on your main entrance. The hinge that holds up a factory gate is overkill for a kitchen cabinet. Every door has its own needs—weight, frequency of use, exposure to weather, security requirements. And the hinge you choose must match those needs.
This is where SS Hinges 304G come in. They are not a one-size-fits-all solution. They are a family of hinges, each designed for specific applications—from the lightest cabinet door to the heaviest industrial gate.
In this guide, I will walk you through the top applications of SS hinges in residential and industrial buildings. By the end, you will know exactly which hinge to use where, and why CrownISI Stainless Steel Butt Hinges are the trusted choice for builders and architects across India.
What Are SS Hinges?
Before we dive into applications, let us quickly cover the basics. An SS hinge is a hinge made from stainless steel. But not all stainless steel is the same.
SS Hinges 304G are made from grade 304 stainless steel. This grade contains 18% chromium and 8% nickel. The chromium forms a protective layer on the surface that prevents rust and corrosion. Even if the steel gets scratched, that layer heals itself. Lower grades like SS 201 or SS 202 save money by using less nickel—but they rust within a year in humid conditions.
The "G" in 304G indicates that the product meets the quality standards required for ISI certification. This means it has been tested and certified by the Bureau of Indian Standards.
At Crown ISI , every hinge is made from virgin SS 304 raw material—no recycled scrap, no mixing of grades. This is why our hinges last for decades while cheaper alternatives fail within years.
SS Hinges in Residential Buildings
Residential buildings have a wide variety of doors—each with different requirements. Let us look at the most common residential applications.
1. Main Entrance Doors
Your main entrance door is the most important door in your home. It is heavy. It faces the weather. It needs to be secure. And it gets used multiple times every single day.
For main entrance doors, you need SS 304 stainless steel butt hinges . These hinges are strong enough to support heavy wooden doors without bending. They do not rust, even in humid or coastal areas. They keep their polish for years.
Heavy-duty butt hinges are essential for demanding applications from residential to industrial projects. They offer durability and long-term performance for doors that face heavy use.
Recommended Size: 5-inch or 6-inch hinges with 3mm thickness. A 5-inch SS butt hinge with 3mm thickness can support doors up to 120kg.
Recommended Type: Stainless steel welded hinges for main entrance doors. Welded hinges have the pin welded into one leaf—it cannot be removed from outside, adding security. For main doors, always choose welded.
Number of Hinges: For a standard 7-foot main door, use three hinges. Two hinges will cause sagging after a few months.
Finish: Satin (brushed) is the most popular for main doors because it hides fingerprints and scratches. Mirror finish is sometimes used for luxury homes.
Why SS 304? Main entrance doors face rain, humidity, and temperature changes. SS 202 hinges will show rust within 2-3 years. SS 304 hinges will stay rust-free for decades.
For information on heavy-duty butt hinges offering durability for demanding applications from residential to industrial projects, visit Sugatsune – Butt Hinges for Doors .
2. Bedroom Doors
Bedroom doors are lighter than main entrance doors. They are used less frequently. And they are indoors, so they do not face weather exposure.
For bedroom doors, SS Butt Hinges in 3x3 inch or 4x4 inch size are sufficient. These hinges provide smooth, silent operation without the extra cost of heavy-duty hinges.
Recommended Size: 3x3 inch or 4x4 inch.
Recommended Type: Standard SS Butt Hinges with removable pins—so you can take the door off easily for maintenance or moving furniture.
Number of Hinges: Use three hinges for a standard bedroom door. Two hinges may work, but three provide better weight distribution and prevent sagging.
Finish: Satin finish is the most common for bedroom doors. It hides fingerprints and matches most interior designs.
Why SS 304? Even though bedroom doors are indoors, they are still exposed to humidity from bathrooms and kitchens. SS 304 hinges do not rust, even in humid conditions.
3. Bathroom and Kitchen Doors
Bathrooms and kitchens are the most humid areas in any home. Moisture from showers, steam, and cooking can cause lower-grade hinges to rust within months.
For bathroom and kitchen doors, Stainless Steel Hinges 304G are essential. These hinges resist rust even in high-moisture environments.
Recommended Size: 3.5x3.5 inch or 4x4 inch.
Recommended Type: SS Butt Hinges with ball bearings for smooth, silent operation even in humid conditions.
Number of Hinges: Use two to three hinges depending on the door weight.
Finish: Satin finish is preferred for bathrooms and kitchens because it is easy to clean and does not show water spots.
Why SS 304? SS 201 hinges will show rust within months in bathroom humidity. SS 304 hinges will stay rust-free for years.
4. Cabinet and Wardrobe Doors
Cabinet and wardrobe doors are the lightest doors in a home. They do not need heavy-duty hinges.
For cabinets and wardrobes, SS Butt Hinges in 3x3 inch size are sufficient.
Recommended Size: 3x3 inch.
Recommended Type: Standard SS Butt Hinges with removable pins.
Number of Hinges: Use two hinges for most cabinet doors. For wider doors, use three.
Finish: Satin or mirror finish—whichever matches your cabinet hardware.
Why SS 304? Even cabinet hinges face humidity from kitchens and bathrooms. SS 304 ensures they do not rust over time.
5. Glass Doors with Frames
Modern homes often have glass doors with metal or wooden frames. These doors need hinges that can support the weight of the glass while maintaining a clean, modern look.
For glass doors with frames, Stainless Steel Hinges 304G with padding are recommended. The padding prevents the glass from coming into direct contact with the metal, reducing the risk of cracks.
Recommended Size: 4x4 inch or larger depending on the door weight.
Recommended Type: SS Butt Hinges with ball bearings for smooth operation.
Number of Hinges: Use three hinges for standard glass doors.
Finish: Mirror finish is often preferred for glass doors to match the clean, modern aesthetic.
Why SS 304? Glass doors are often installed in high-traffic areas or near entrances. SS 304 provides the strength and corrosion resistance needed for these applications.
6. Balcony and French Doors
Balcony and French doors are exposed to weather—rain, sun, and humidity. They also need to be secure.
For balcony and French doors, stainless steel welded hinges are recommended. Welded hinges cannot be removed from outside, adding security.
Recommended Size: 4x4 inch or 5x5 inch.
Recommended Type: Stainless Steel Welded Hinges for security.
Number of Hinges: Use three hinges for standard balcony doors.
Finish: Satin finish is practical and matches most outdoor hardware.
Why SS 304? Balcony doors face rain and humidity. SS 304 does not rust, even in these conditions.
7. Garage Doors
Garage doors are heavy and used frequently. They face weather exposure and need to be secure.
For garage doors, SS 304 stainless steel butt hinges with 3mm thickness are recommended.
Recommended Size: 5x5 inch or 6x6 inch.
Recommended Type: Stainless Steel Welded Hinges for security and strength.
Number of Hinges: Use three to four hinges depending on the door weight.
Finish: Satin finish is practical for garage doors.
Why SS 304? Garage doors face rain, humidity, and temperature changes. SS 304 provides the corrosion resistance and strength needed for this application.
SS Hinges in Industrial Buildings
Industrial buildings have very different requirements from residential buildings. Doors are heavier. They are used more frequently. They face tougher conditions. And security is often a higher priority.
1. Factory and Warehouse Doors
Factory and warehouse doors are heavy, used constantly, and often exposed to harsh conditions—dust, chemicals, and temperature changes.
For factory and warehouse doors, stainless steel welded hinges are the answer. Welded hinges have no loose pins and cannot be removed from outside. They are stronger and do not loosen over time.
Commercial and industrial settings require heavy-duty hinges because the doors are often larger, thicker, and subjected to constant use. Heavy-duty ball bearing hinges are ideal for these environments.
Recommended Size: 5x5 inch or 6x6 inch.
Recommended Type: Stainless Steel Welded Hinges with 3mm thickness.
Number of Hinges: Use three to four hinges depending on the door height and weight. For doors over 7.5 feet, use four hinges.
Finish: Satin finish is practical and hides scratches.
Why SS 304? Factory doors face dust, chemicals, and temperature changes. SS 304 provides the corrosion resistance and strength needed for industrial environments.
For a guide on heavy-duty hinges for commercial and industrial settings where doors are larger, thicker, and subjected to constant use, visit Emtek – Heavy Duty Stainless Steel Ball Bearing Hinges .
2. Heavy Gates
Heavy gates are used in industrial settings, warehouses, and large commercial properties. They are extremely heavy and need hinges that can support their weight without bending.
For heavy gates, stainless steel welded hinges are essential. These hinges have no gaps, no weak points, and no rust starting from inside.
Recommended Size: 6x6 inch or larger.
Recommended Type: Stainless Steel Welded Hinges with 3mm thickness or more.
Number of Hinges: Use three to four hinges depending on the gate weight and height.
Finish: Satin finish is practical for gates.
Why SS 304? Heavy gates face rain, humidity, and constant use. SS 304 provides the strength and corrosion resistance needed for these applications.
3. Security Doors
Security doors are used in industrial settings, government buildings, and high-security areas. These doors need hinges that cannot be tampered with.
For security doors, stainless steel welded hinges are mandatory. Welded hinges cannot be removed from outside, adding security.
Recommended Size: 4x4 inch or 5x5 inch.
Recommended Type: Stainless Steel Welded Hinges.
Number of Hinges: Use three to four hinges depending on the door height and weight.
Finish: Satin finish is practical for security doors.
Why SS 304? Security doors need to be strong and corrosion-resistant. SS 304 provides both.
4. Fire-Rated Doors
Fire-rated doors are required in many industrial and commercial buildings. These doors are heavy and must maintain their integrity in a fire.
For fire-rated doors, SS 304 stainless steel butt hinges are recommended. SS 304 is non-combustible and can withstand high temperatures.
Fire-rated hinges are designed to maintain door integrity during a fire, preventing the spread of flames and smoke. They are required in commercial buildings and industrial facilities.
Recommended Size: 4x4 inch or 5x5 inch with 3mm thickness.
Recommended Type: Stainless Steel Welded Hinges or ball bearing hinges.
Number of Hinges: Use three to four hinges depending on the door height and weight.
Finish: Satin finish is practical for fire-rated doors.
Why SS 304? SS 304 is non-combustible and maintains its integrity even in extreme fires.
For industry standards for butt hinges including specifications for fire-rated and high-traffic applications, visit ASSA ABLOY – Butt Hinge Standards and Specifications .
5. Machine and Equipment Enclosures
Industrial machines often have enclosures, panels, and maintenance hatches that need hinges.
For machine and equipment enclosures, SS Hinges 304G are recommended. These hinges are strong, corrosion-resistant, and low-maintenance.
Recommended Size: Varies depending on the application.
Recommended Type: Standard SS Butt Hinges or welded hinges depending on the load.
Number of Hinges: Depends on the panel size and weight.
Finish: Satin finish is practical for industrial applications.
Why SS 304? Industrial environments often have dust, chemicals, and humidity. SS 304 provides the corrosion resistance needed for these conditions.
Choosing the Right Hinge for Your Application
Here is a quick reference table to help you choose the right hinge for your application:
| Application | Recommended Hinge | Size | Thickness | Type |
|---|---|---|---|---|
| Main entrance door | SS 304 Stainless Steel Butt Hinges | 5x3 or 6x4 inch | 3mm | Welded |
| Bedroom door | SS Butt Hinges | 3x3 or 4x4 inch | 2.0-2.5mm | Standard |
| Bathroom/kitchen door | Stainless Steel Hinges 304G | 3.5x3.5 or 4x4 inch | 2.0-2.5mm | Ball bearing |
| Cabinet/wardrobe | SS Butt Hinges | 3x3 inch | 1.5mm | Standard |
| Glass door with frame | Stainless Steel Hinges 304G | 4x4 inch | 2.5mm | Ball bearing |
| Balcony/French door | Stainless Steel Welded Hinges | 4x4 or 5x5 inch | 3mm | Welded |
| Garage door | SS 304 Stainless Steel Butt Hinges | 5x5 or 6x6 inch | 3mm | Welded |
| Factory/warehouse door | Stainless Steel Welded Hinges | 5x5 or 6x6 inch | 3mm | Welded |
| Heavy gate | Stainless Steel Welded Hinges | 6x6 inch or larger | 3mm+ | Welded |
| Security door | Stainless Steel Welded Hinges | 4x4 or 5x5 inch | 3mm | Welded |
| Fire-rated door | SS 304 Stainless Steel Butt Hinges | 4x4 or 5x5 inch | 3mm | Welded/Ball bearing |
| Machine enclosure | SS Hinges 304G | Varies | Varies | Standard/Welded |
For a detailed guide on hinge sizes and applications for different door types, visit HardwareSource – Butt Hinge Selection Guide .
Why Crown ISI Is the Trusted Choice
When you need SS Hinges 304G , CrownISI Stainless Steel Butt Hinges , or Stainless Steel Door fitting 304G , Crown ISI is the name you can trust.
Over 39 Years of Experience
Crown Industries has been manufacturing high-quality door fittings for over 39 years. Our products are trusted by government departments, semi-government organizations, and public sector undertakings across India.
Genuine SS 304G Material
Crown ISI uses only genuine 304G stainless steel. No mixing. No cheap metal. Every hinge is made from virgin SS 304 raw material.
Rigorous Quality Control
Every hinge from Crown ISI passes:
Thickness test – Ensuring consistent thickness
Load test – Verifying strength and load capacity
Salt spray test – 200-hour salt spray test for rust resistance
Screw alignment – Ensuring screw holes align perfectly with Indian door frames
We also test every hinge by opening and closing it 50,000 times on a machine. Only after passing all tests does a hinge get the Crown ISI stamp.
Complete Range of Products
Crown ISI offers a complete range of Crown Stainless Steel Door Accessories including:
SS Butt Hinges – Available in multiple sizes and thicknesses
Stainless steel welded hinges – For heavy and security doors
4 Ball Bearing Hinges – For smooth, quiet operation
SS door handles
Cylinder door locks
Aldrops (sliding door bolts)
Tower bolts
ISI-Certified Products
All Crown ISI products carry the ISI mark, ensuring they meet Indian quality and safety standards. The ISI mark confirms that the product has been tested and certified by the Bureau of Indian Standards.
From October 2023, all door fittings sold in India must have ISI certification. This includes hinges, handles, tower bolts, and other hardware.
For information on ISI mark certification standards for stainless steel butt hinges, visit EVTL India – BIS Certification for Stainless Steel Butt Hinges IS 12817:2020 .
Trusted by Professionals
Crown ISI products are used and patronised by various government, semi-government, and public sector organisations. The company has executed a number of small, medium, and large projects for government departments and semi-government departments.
Frequently Asked Questions (FAQs)
1. What is the difference between SS 304 and SS 202 hinges?
SS 304 contains 18% chromium and 8% nickel, giving it excellent corrosion resistance. SS 202 has less nickel and chromium, making it cheaper but less durable. SS 304 does not rust, even in humid or coastal areas, while SS 202 may show signs of rust within 2-3 years.
2. What are stainless steel welded hinges?
Stainless steel welded hinges have the hinge pin welded into one leaf. They cannot be removed from outside, adding security. They are more durable and tamper-resistant than standard hinges.
3. Why should I choose SS 304 hinges for bathroom doors?
Bathrooms are humid environments. SS 202 hinges will rust within months in bathroom humidity. SS 304 hinges will stay rust-free for years.
4. How many hinges does a main entrance door need?
For a standard 7-foot main door, use three hinges. Two hinges will cause sagging after a few months.
5. What size SS hinges should I buy for a main door?
For main entrance doors, choose 5-inch or 6-inch SS butt hinges with 3mm thickness.
6. Are ball bearing hinges necessary?
Ball bearing hinges reduce friction and allow smoother operation, especially for heavy doors. They are ideal for high-traffic areas and heavy doors.
7. Can I use stainless steel hinges on a wooden door?
Yes. Stainless steel hinges work perfectly on wooden doors. They are strong enough to support heavy wooden doors and will not rust over time.
8. How do I know if a hinge is genuine SS 304?
A genuine SS 304 stainless steel hinge will have "SS 304" or "304G" engraved on it. If it is not there, assume it is a lower grade.
9. What is the ISI mark, and why is it important?
The ISI mark is a certification from the Bureau of Indian Standards that ensures the product meets Indian quality and safety standards. From October 2023, all door fittings sold in India must have ISI certification.
10. Why should I choose Crown ISI for my door hardware?
Crown ISI has been manufacturing high-quality door fittings for over 39 years. Our products are ISI-certified, made from virgin SS 304 raw material, and undergo rigorous quality checks including a 200-hour salt spray test. We are trusted by government departments and public sector organizations across India.
Final Thoughts
SS hinges are not a one-size-fits-all solution. The hinge that works on your bedroom door will fail on your main entrance. The hinge that holds up a factory gate is overkill for a kitchen cabinet. Understanding the right application for each type of hinge is essential for building doors that last.
If you are looking for the best SS Hinges 304G , CrownISI Stainless Steel Butt Hinges , or Stainless Steel Door fitting 304G , look no further than Crown ISI .
With over 39 years of experience, ISI-certified products, virgin SS 304 raw material, and rigorous quality control, Crown ISI is the name you can trust for all your door hardware needs.
Visit our products page to explore our full range of SS butt hinges, welded hinges, and door accessories. For our complete range of door fittings, check out our stainless steel door accessories page.
Contact us today for more information or to place your order.
Contact Information
Crown Industries
Factory: 39/2/9A, Site IV, Industrial Area, Sahibabad, Distt. Ghaziabad (U.P.)
Office: 500 Kuchha Pati Ram, Bazar Sita Ram, Delhi 110006
Phone: +91 98111 07515
