Welded Parts
Your Professional Welded Parts Supplier
Founded in 2000, Hebei Kailu Hardware Manufacturing Co., Ltd. is a manufacturing enterprise specializing in metal stamping parts, cold heading processing, and sheet metal fabrication. Located in Nanpi County, Hebei Province, our factory covers 12,000 square meters, including a 7,500-square-meter workshop. Supported by more than 60 advanced production machines and a professional team of 45 experienced employees, we operate complete production lines covering mold development, precision stamping, drawing, welding, pipe bending, sheet metal processing, and final inspection. With strong in-house manufacturing capabilities and strict process control, we provide customized hardware solutions and reliable mass production services for customers in domestic and international markets.
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Why choose us
Customization
We provide tailored production services based on customer drawings, samples, and technical requirements, ensuring suitable materials, precision standards, and manufacturing processes.
Strict Quality Control
We implement comprehensive quality inspection procedures, including first article inspection, in-process inspection, and final inspection, ensuring every product meets customer standards.
Large Production Capacity
With an annual production capacity exceeding 1,000 tons, we can support both small-batch customization and large-volume orders with stable lead times.
Sales Market
Our products are exported to Europe, North America, Southeast Asia, the Middle East, and other overseas markets, earning customer trust through stable quality and efficient delivery.
Stainless Steel Butt Hinge
Stainless steel butt hinges apart from other materials (like brass or zinc alloy) is their exceptional material properties. Stainless steel contains chromium, which forms a protective oxide layer, preventing rust and corrosion—even in humid or outdoor environments. This makes them far more durable than non-stainless alternatives, especially in areas prone to moisture, such as kitchens, bathrooms, or outdoor structures. Additionally, stainless steel is strong, scratch-resistant, and easy to clean, ensuring long-term performance with minimal maintenance.
| P/N | A | B | C | D | E | F | G | I | J | Holes |
| 3430-303000-4040 | 40 | 40 | 1,0 | 5,2 | 3,0 | - | - | - | - | - |
| 3430-303000-5050 | 50 | 50 | 1,4 | 6,2 | 3,0 | - | - | - | - | - |
| 3430-303000-6060 | 60 | 60 | 1,4 | 6,2 | 3,0 | - | - | - | - | - |
| 3430-303000-8080 | 80 | 80 | 1,4 | 6,4 | 3,0 | - | - | - | - | - |
| 3430-303001-4040 | 40 | 40 | 1,0 | 5,2 | 3,0 | 22,5 | - | 25,0 | 4,9 | 4 x |
| 3430-303001-5050 | 50 | 50 | 1,4 | 6,2 | 3,0 | 18,0 | 35,0 | 35,0 | 5,8 | 6 x |
| 3430-303001-6060 | 60 | 60 | 1,4 | 6,2 | 3,0 | 18,0 | 45,0 | 45,0 | 5,8 | 6 x |
| 3430-303001-7070 | 70 | 70 | 1,4 | 6,2 | 3,0 | 41,0 | 54,0 | 55,0 | 6,8 | 6 x |
| 3430-303001-8080 | 80 | 80 | 1,4 | 6,2 | 3,0 | 41,0 | 65,0 | 65,0 | 6,8 | 6 x |
Advantages of Stainless Steel Butt Hinge
Durability
Resistant to wear, impact, and deformation due to high-tensile stainless steel construction.
Low Maintenance
Requires only periodic wiping and light lubrication to maintain performance.
Weather Resistance
Performs reliably in extreme temperatures, humidity, and wet conditions.
Security-Ready
Compatible with reinforced frames and anti-lift pin designs for enhanced protection.
Versatile Use
Suitable for interior and exterior doors, cabinets, gates, and enclosures.
Code Compliance
Often meets building codes and fire safety standards when used in rated assemblies.
Functionality of Stainless Steel Butt Hinge
Ball Bearing Hinges: Reduce friction and wear, ideal for high-traffic areas like commercial entrances or hospital doors.
Self-Closing Hinges: Incorporate spring mechanisms to automatically close doors—essential for fire-rated or accessibility-compliant installations.
Security Hinges: Feature non-removable pins, interlocking knuckles, or welded tips to prevent unauthorized removal or tampering.
Removable Pin Hinges: Allow easy disassembly for maintenance, painting, or seasonal removal—common in gates and service panels.
Adjustable Hinges: Enable fine-tuning of vertical, horizontal, and depth alignment over time, compensating for settling or warping.
Types of Stainless Steel Butt Hinge
Ball-bearing Butt Hinge
A type of door hinge that features ball bearings at the knuckles to reduce friction and improve durability. Ball-bearing butt hinges are ideal for heavy doors and high-traffic areas.
Spring Butt hinge
A type of cabinet door hinge that is based on a spring operation, allowing the door to close automatically. Spring butt hinges are commonly employed in commercial settings, such as hospitals and schools.
Rising Butt Hinge
A type of door hinge that lifts the door as it is opened, providing added space when the door is fully opened. Rising butt hinges are used for doors that have floor coverings that could obstruct the door's movement.
Plain butt hinge
A basic type of cabinet door hinges with no special features and generally opted for lightweight doors and cabinets. Plain butt hinges are affordable and easy to install, making them a popular choice for home improvement projects.
Applications of Stainless Steel Butt Hinge
Doors – Residential & Commercial
Stainless steel butt hinges are a preferred choice for various door types due to their strength and longevity. They support frequent use while maintaining alignment and smooth movement.
Windows & Ventilation Systems
These hinges provide secure and controlled movement for operable windows, especially in moisture-prone or coastal environments.
Gates – Outdoor & Security Applications
From garden gates to heavy-duty security barriers, stainless steel butt hinges deliver strength and weather resistance.
Cabinets, Furniture & Hidden Mechanisms
Stainless steel butt hinges offer both functionality and aesthetic appeal in furniture and storage solutions.
Storage Boxes & Chests
Ideal for both decorative and utilitarian containers, these hinges ensure reliable access and durability.
Machinery, Equipment & Industrial Use
Butt hinges are critical for access and safety in industrial and commercial equipment.
Access Panels & Enclosures
These hinges enable secure yet easy access to critical systems in buildings and technical installations.
Components of Stainless Steel Butt Hinge
Hinge Leaf
The hinge leaf is the flat metal plate attached to the door and frame. It provides the main support and load-bearing surface. Stainless steel leaves are strong, rust-resistant, and usually have holes for easy installation.
Hinge Barrel (Knuckles)
The knuckles are the interlocking cylindrical parts where the leaves meet. They form the hinge joint and allow smooth rotation around the hinge pin. They are designed to reduce friction and improve durability.
Hinge Pin
The hinge pin is the rod that goes through the knuckles and holds the hinge together. It acts as the pivot point for movement. It is usually made of stainless steel for strength and corrosion resistance, and may be removable or fixed depending on security needs.
Material and Corrosion Resistance of Stainless Steel Butt Hinge
Grade 304 Stainless Steel: Offers excellent corrosion resistance in most indoor and dry outdoor environments. Ideal for general-purpose use in residential and commercial settings.
Grade 316L (Marine-Grade): Contains molybdenum, which significantly enhances resistance to chlorides and saltwater. Recommended for coastal installations, pool enclosures, marine vessels, and chemical processing facilities.
Passivation Treatment: A chemical process that removes free iron from the surface and enhances the natural chromium oxide layer. Always choose passivated hinges for maximum corrosion protection and long-term performance.
Magnetic Properties: Both 304 and 316L are typically non-magnetic, making them suitable for sensitive environments like hospitals or laboratories where magnetic interference must be avoided.
Design of Stainless Steel Butt Hinge
Surface Finish
Choose from brushed, satin, mirror-polished, or bead-blasted finishes to match architectural hardware and door styles.
Concealed Hinges
Ideal for frameless cabinets or contemporary doors where visible hardware is undesirable. They also provide clean lines and improved security.
Pivot Hinges
Offer a sleek, modern look with smooth rotational movement. Often used in high-end architectural designs and glass doors.
Butt Hinge Styles
Standard, raised, or half-mortise hinges allow customization based on door thickness and frame design.
Manufacturing Process of Stainless Steel Butt Hinge
Heat Treatment & Cold Working
Heat treatment makes metal hinges harder, stronger, and more durable. Cold working shapes metal without heat, improving strength and wear resistance. These methods help hinges perform well under heavy use and harsh environments.
Extrusion
Extrusion pushes metal through a mold to create strong, uniform hinge shapes. Extruded hinges are thicker and stronger, making them suitable for heavy-duty uses like aerospace, automotive, and industrial equipment.
Forming (Stamping)
Stamping cuts and shapes thin metal sheets using dies and presses. It is fast, accurate, and cost-effective for producing large quantities of standard butt hinges.
Casting
Casting pours molten metal into molds to create complex or decorative hinge designs. Cast hinges are often used for custom, ornamental, or corrosion-resistant applications.
Cutting & Milling
Cutting and milling shape and refine hinge parts with high precision. These processes create accurate holes, edges, and surfaces for better performance and appearance.
Secondary Processing
Additional treatments improve hinge function and durability. Examples include adding ball bearings for smoother movement and applying coatings or plating to prevent rust and improve appearance.
FAQ
We're well-known as one of the leading welded parts manufacturers and suppliers in China, also support customized service. Welcome to buy high quality welded parts made in China here and get free sample from our factory. For price consultation, contact us.
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