DDSS038
D&D Hardware
Wooden Door, Metal Door, Steel Door, Interior Door, outer Door
Stainless Steel 304 / 316 / 201
SSS , PSS , PVD , PB, AB , AC
T/T, L/C, D/P, Western Union
Jiangmen /Guangzhou / Shenzhen , China
200,000/Month
| Availability: | |
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| Quantity: | |
Spring hinge is a hinge that can automatically close the door leaf after it is opened. It is attached with a spring and an adjusting screw, which can adjust the height and thickness of the board up and down, left and right. Single-spring hinges can only be opened in one direction, and double-spring hinges can be opened in both directions from inside to outside, which is mainly used for the gates of public buildings. Double-spring hinge can be opened in both directions inside and outside, with compact structure, built-in spiral spring, equipped with hexagon wrench to freely adjust the spring pressure, advanced design, noiseless operation, durability, stainless steel hinge head, strong elastic iron spring and high-quality resistance oil, smooth, stable and noiseless operation. The surface treatment is meticulous, uniform and angular; The thickness, size and material of the hinge are accurate. For further information, please contact us.

Product Overview
| Product name | SS201 Automatic Double Action Spring Hinge-DDSS038 |
| Product Model | DDSS038 |
| Item | A B C D E F G H 102(4'') 40 16.5 23.5 25 16.3 5.5 54.5 127(5'') 47.5 15.5 32 25 17.5 5.5 64 153(6'') 51.5 16.5 35 25 17.5 5.5 70.5 |
| Material | Stainless Steel 201, 304 or 316 |
| Fitting | Flat tip, ball bearing, fix pin, screws, |
| Finish | Satin stainless steel, Polished stainless steel, Polished brass, Chrome-plated, Satin chrome-plated, PVD |
| Suitable for | Wooden door, Metal door, fire rated door. |



| MOQ | 500 Pieces |
| Package | One pair/white box or color box or Blister card in Standard export carton |
| Sample time | 5-7 working days |
| Production lead time | 30-35 days |
| Shipping Port | Jiangmen , China / Shenzhen , China . |
1.Door Hinge- UL 10C R38013 & BHMA/ANSI Grade1/2 & CE EN1935 Grade 13
2.Concealed Hinge- BS EN1935, EN1634 Fire Rated
3.Door Lock - CE EN12209 UKCA Fire Rated & UL 10C R40901
4. Door Handle- BS EN 1906 Grade 4, EN1634 Fire Rated
5. Panic Exit Device- UL 10C R40486 & UL305 SA45817 & CE EN1125
6. Door Closer – CE BS EN 1154 & UL 10C R40717
7. Lock Cylinder-BS EN1303, EN1634 Fire Rated
8. Door Viewer - UL Listed UL 10C Fire Rated R41286
9. Glass Hardware / Bathroom Hardware / Barn Door Hardware

Spring hinge is a hinge that can automatically close the door leaf after it is opened. It is attached with a spring and an adjusting screw, which can adjust the height and thickness of the board up and down, left and right. Single-spring hinges can only be opened in one direction, and double-spring hinges can be opened in both directions from inside to outside, which is mainly used for the gates of public buildings. Double-spring hinge can be opened in both directions inside and outside, with compact structure, built-in spiral spring, equipped with hexagon wrench to freely adjust the spring pressure, advanced design, noiseless operation, durability, stainless steel hinge head, strong elastic iron spring and high-quality resistance oil, smooth, stable and noiseless operation. The surface treatment is meticulous, uniform and angular; The thickness, size and material of the hinge are accurate. For further information, please contact us.

Product Overview
| Product name | SS201 Automatic Double Action Spring Hinge-DDSS038 |
| Product Model | DDSS038 |
| Item | A B C D E F G H 102(4'') 40 16.5 23.5 25 16.3 5.5 54.5 127(5'') 47.5 15.5 32 25 17.5 5.5 64 153(6'') 51.5 16.5 35 25 17.5 5.5 70.5 |
| Material | Stainless Steel 201, 304 or 316 |
| Fitting | Flat tip, ball bearing, fix pin, screws, |
| Finish | Satin stainless steel, Polished stainless steel, Polished brass, Chrome-plated, Satin chrome-plated, PVD |
| Suitable for | Wooden door, Metal door, fire rated door. |



| MOQ | 500 Pieces |
| Package | One pair/white box or color box or Blister card in Standard export carton |
| Sample time | 5-7 working days |
| Production lead time | 30-35 days |
| Shipping Port | Jiangmen , China / Shenzhen , China . |
1.Door Hinge- UL 10C R38013 & BHMA/ANSI Grade1/2 & CE EN1935 Grade 13
2.Concealed Hinge- BS EN1935, EN1634 Fire Rated
3.Door Lock - CE EN12209 UKCA Fire Rated & UL 10C R40901
4. Door Handle- BS EN 1906 Grade 4, EN1634 Fire Rated
5. Panic Exit Device- UL 10C R40486 & UL305 SA45817 & CE EN1125
6. Door Closer – CE BS EN 1154 & UL 10C R40717
7. Lock Cylinder-BS EN1303, EN1634 Fire Rated
8. Door Viewer - UL Listed UL 10C Fire Rated R41286
9. Glass Hardware / Bathroom Hardware / Barn Door Hardware

Double action spring hinge (can be opened 180 degrees both inside and outside) is a specially designed door hardware that combines the automatic reset function of the spring with the flexibility of bidirectional opening and closing, allowing the door to rotate inward or outward to 180 degrees and automatically return to the preset position when unmanned. This design not only optimizes the efficiency of space utilization, but also significantly improves the functionality and convenience of the door control system, which is widely used in commercial, industrial, and specific residential scenarios.
Core functions and technical features
The core mechanism of Double action spring hinges relies on its precise internal spring structure and bearing system. Through the preloading adjustment of high-strength springs, the hinges can automatically generate a rebound force after the door is pushed open, ensuring that the door leaf closes smoothly to its initial state. Its bidirectional opening and closing design allows the door to rotate freely at a 180 degree arc, perfectly solving the limitation of traditional hinges that only support one-way opening. In addition, some high-end models are also equipped with damping and buffering modules, effectively reducing the impact force when the door is closed, avoiding hand clamping or noise problems, especially suitable for places with high pedestrian traffic.
Application scenarios and practical value
In the commercial field, double action spring clothing is an ideal choice for spaces such as restaurants, kitchens, hospital wards, and warehouse corridors. For example, in the catering industry, employees often carry ingredients or utensils with both hands. The two-way opening function allows the door to be opened with a light touch of the body, while the automatic closing feature effectively isolates kitchen noise and odor diffusion. In industrial environments, such hinges can be used for fire compartment doors or workshop access doors, ensuring quick evacuation in emergency situations and meeting safety regulations for closed doors. In residential settings, it can also be used for children's rooms or elderly residences, reducing safety hazards through automatic door closing.
Installation and adaptability
The installation of double action spring hinge should strictly follow the weight and size parameters of the door. Usually, its load capacity needs to match the door leaf material (such as solid wood, metal or glass), and adjustment screws are provided to calibrate the door closing speed and closing angle. D&D door hinge products are made of stainless steel, which has both corrosion resistance and high load-bearing performance, and is suitable for wet or high-frequency use environment.
Industry significance and development trend
With the improvement of liquidity and efficiency in architectural space design, double action spring clothing has become an important innovation of modern door control hardware. It not only solves the traffic contradiction of traditional doors in dynamic space, but also reduces energy consumption (such as the loss of warm air in air conditioning) through automatic design. In the future, with the increasing demand for intelligent buildings, such products will further integrate sensors and intelligent control modules to realize linkage with the Internet of Things system and become the key component of intelligent space management.
To sum up, the double action spring hinge redefines the opening and closing logic of the door by skillfully combining mechanical properties with practical requirements. Its outstanding advantages in safety, energy saving and space adaptability are pushing it to become an indispensable gating solution in high-flow and multi-functional spaces.
Double action spring hinge (can be opened 180 degrees both inside and outside) is a specially designed door hardware that combines the automatic reset function of the spring with the flexibility of bidirectional opening and closing, allowing the door to rotate inward or outward to 180 degrees and automatically return to the preset position when unmanned. This design not only optimizes the efficiency of space utilization, but also significantly improves the functionality and convenience of the door control system, which is widely used in commercial, industrial, and specific residential scenarios.
Core functions and technical features
The core mechanism of Double action spring hinges relies on its precise internal spring structure and bearing system. Through the preloading adjustment of high-strength springs, the hinges can automatically generate a rebound force after the door is pushed open, ensuring that the door leaf closes smoothly to its initial state. Its bidirectional opening and closing design allows the door to rotate freely at a 180 degree arc, perfectly solving the limitation of traditional hinges that only support one-way opening. In addition, some high-end models are also equipped with damping and buffering modules, effectively reducing the impact force when the door is closed, avoiding hand clamping or noise problems, especially suitable for places with high pedestrian traffic.
Application scenarios and practical value
In the commercial field, double action spring clothing is an ideal choice for spaces such as restaurants, kitchens, hospital wards, and warehouse corridors. For example, in the catering industry, employees often carry ingredients or utensils with both hands. The two-way opening function allows the door to be opened with a light touch of the body, while the automatic closing feature effectively isolates kitchen noise and odor diffusion. In industrial environments, such hinges can be used for fire compartment doors or workshop access doors, ensuring quick evacuation in emergency situations and meeting safety regulations for closed doors. In residential settings, it can also be used for children's rooms or elderly residences, reducing safety hazards through automatic door closing.
Installation and adaptability
The installation of double action spring hinge should strictly follow the weight and size parameters of the door. Usually, its load capacity needs to match the door leaf material (such as solid wood, metal or glass), and adjustment screws are provided to calibrate the door closing speed and closing angle. D&D door hinge products are made of stainless steel, which has both corrosion resistance and high load-bearing performance, and is suitable for wet or high-frequency use environment.
Industry significance and development trend
With the improvement of liquidity and efficiency in architectural space design, double action spring clothing has become an important innovation of modern door control hardware. It not only solves the traffic contradiction of traditional doors in dynamic space, but also reduces energy consumption (such as the loss of warm air in air conditioning) through automatic design. In the future, with the increasing demand for intelligent buildings, such products will further integrate sensors and intelligent control modules to realize linkage with the Internet of Things system and become the key component of intelligent space management.
To sum up, the double action spring hinge redefines the opening and closing logic of the door by skillfully combining mechanical properties with practical requirements. Its outstanding advantages in safety, energy saving and space adaptability are pushing it to become an indispensable gating solution in high-flow and multi-functional spaces.




D&D HARDWARE INDUSTRIAL CO.,LTD
Https://www.dndhardware.com
D&D HARDWARE INDUSTRIAL CO.,LTD
Https://www.dndhardware.com