This standard applies to common window types such as casement windows (inward or outward opening), top-hung windows, and bottom-hung windows.
The lock cylinder is the core of anti-theft security and directly determines the lock's protection level. Among residential lock cylinders, C-grade lock cylinders currently offer the highest security and the longest resistance to technical unlocking, making them the preferred choice for families emphasizing theft prevention.
floor spring is a "door closer" hidden within the floor. It not only controls opening and closing but also allows adjustment of the closing speed and force. It holds the door steadily in place, preventing it from swinging uncontrollably in the wind.
Complies with the technical requirements of the national standard GB/T 37267-2018 "General Technical Conditions for Seismic Bracing and Hanging Systems in Buildings". The seismic bracing systems undergo comprehensive testing, including appearance, dimensions and tolerances, coating thickness, load-bearing performance of seismic connecting components, load-bearing performance of pipeline connecting components, cyclic loading performance, fatigue performance, fire resistance, and corrosion resistance.
<p>the sequential door closer ensures the doors close in the "right order," while the door closer ensures they "close properly." Understanding their differences is key to selecting the right components that meet safety standards while enhancing usability.for reliable door control hardware, consider 3H Hardware</p>
CZH33
3H INC.
Description:
Item No. | CZH33 |
Size | 156.5*27.5*65mm |
Application | Outward Opening window |
Length of shaft | Optional |
Material | Aluminum alloy |
Surface Treatment | Powder coating |
Color | Optional |
Components | Shaft,cover |
Function | Durable,easy-installation,smooth-operation |
Package | Box |
Specification:

Product Description:
With left or right version
The length of shaft can be customized
FAQ
1. Q:What is the definition of handle?
A: Controlling device that drives up transmission devices, multi-point locking devices and achieves the opening and closing of windows and doors.
2. Q:What's the performance index of this handle?
A: The operating standard is JG/T129-2017.
Repeatedly open and close for 25,000 times.
The handle can remain undamaged under 25N.
The deviation from the handle shank curve is less than 5 degrees.
Features
Functionality: They allow for easy operation of opening and closing windows, with mechanisms that facilitate smooth movement.
Security: Many handles include built-in locking mechanisms to enhance window security and prevent unauthorized access.
Material: They are typically made from durable materials such as aluminum, brass, or high-grade plastic, ensuring long-term reliability.
Design: Available in various styles and finishes, window handles can match different aesthetic preferences and window types.
Ergonomics: Designed for comfort, they often feature ergonomic grips for easy handling and reduced strain during use.
Description:
Item No. | CZH33 |
Size | 156.5*27.5*65mm |
Application | Outward Opening window |
Length of shaft | Optional |
Material | Aluminum alloy |
Surface Treatment | Powder coating |
Color | Optional |
Components | Shaft,cover |
Function | Durable,easy-installation,smooth-operation |
Package | Box |
Specification:

Product Description:
With left or right version
The length of shaft can be customized
FAQ
1. Q:What is the definition of handle?
A: Controlling device that drives up transmission devices, multi-point locking devices and achieves the opening and closing of windows and doors.
2. Q:What's the performance index of this handle?
A: The operating standard is JG/T129-2017.
Repeatedly open and close for 25,000 times.
The handle can remain undamaged under 25N.
The deviation from the handle shank curve is less than 5 degrees.
Features
Functionality: They allow for easy operation of opening and closing windows, with mechanisms that facilitate smooth movement.
Security: Many handles include built-in locking mechanisms to enhance window security and prevent unauthorized access.
Material: They are typically made from durable materials such as aluminum, brass, or high-grade plastic, ensuring long-term reliability.
Design: Available in various styles and finishes, window handles can match different aesthetic preferences and window types.
Ergonomics: Designed for comfort, they often feature ergonomic grips for easy handling and reduced strain during use.
