Streamlined Combination Lock Casement Window Handle with Three Digit Dial

Product Specification

Streamlined Casement Window Combination Handle Lock
This curved, streamlined combination handle lock features a one-piece die-cast zinc alloy lock body and is equipped with a three-digit combination lock mechanism. It is compatible with single-pane aluminum alloy and UPVC casement windows and can be used in conjunction with sliding hinges and five-piece door and window hardware sets. It offers excellent corrosion and wear resistance, comes with a 5-year manufacturer’s warranty, and is a child-safety handle specifically designed for home renovation and real estate projects.
Made of zinc alloy, it is easy to install and operate. The keyless design features three-digit die-cast zinc alloy combination dials; the combination is adjustable, offering 10,000 different code combinations. The product complies with the QB/T 5338-2018 standard and is suitable for UPVC and aluminum profiles with a thickness of 40–60 mm.

All-zinc alloy monolithic construction with a premium weather-resistant pearl chrome plating
The handle is cast from thickened zinc alloy, offering resistance to prying, compression, and external impacts, and remains resistant to breakage or deformation even under long-term, high-frequency torsional use. It features standard pearl chrome plating, providing a refined, premium matte metallic finish that is wear- and scratch-resistant.
Surface finishes can be customized according to customer requirements, with a minimum order quantity of 1,000 sets. The product has passed a 500-hour neutral salt spray test and a 4H high-hardness abrasion resistance test. The coating exhibits strong adhesion and, even under long-term exposure to sunlight and humidity on balconies or outdoors, is resistant to rust, peeling, and loss of luster, demonstrating excellent weather resistance. The lock latch tensile strength exceeds 350 N·m, and the opening/closing durability test reaches 100,000 cycles.

Three-digit combination lock design for keyless security
1. Three-digit combination: Three independent combination wheels offer a wide range of code options and enhanced anti-theft performance. There is no need to carry a key, eliminating the hassle of losing or forgetting it;
2. The code can be adjusted independently; operation is simple, allowing you to change the code as needed for flexible use;
3. Enhanced child safety lock: Once locked, the handle is completely secured and cannot be turned, effectively preventing children from opening the window and falling out. Ideal for windows in high-rise residences and children’s rooms.
The smooth, curved design is ergonomic, with a comfortable grip free of sharp edges, making it effortless to open and close doors and windows while balancing practical functionality with minimalist aesthetics.

Compatible with standard profiles for easy installation
Compatible with mainstream aluminum alloy and UPVC single-sash casement window profiles on the market; comes factory-equipped with a dedicated square shaft and installation screws. The base features pre-drilled universal standard mounting holes, allowing direct integration with hinge kits and five-piece door and window hardware sets to form a complete hardware system. Standard grooves eliminate the need for profile modifications, facilitating bulk assembly by door and window manufacturers and saving time and effort.

Authoritative Performance Testing, Reliable 5-Year Warranty
Every product undergoes rigorous testing before leaving the factory, including 10,000-cycle torsional fatigue testing, as well as wear and corrosion resistance testing. The drive mechanism operates smoothly, with no jamming or abnormal noises. The product comes with a 5-year warranty and comprehensive after-sales support.
Suitable for single-sash casement windows in home renovation projects, skylights in real estate developments, and commercial casement windows, meeting the needs of both domestic home renovation projects and bulk procurement for export.