Keyless Dial Combination Handle Lock Streamlined Single Swing Zinc Alloy

Streamlined Single-Panel Casement Window Combination Handle Lock
This single-action combination handle lock features a zinc alloy body, is easy to install and operate, and features a keyless design with a 3-digit die-cast zinc alloy combination dial. The combination is adjustable and offers 10,000 different combinations; The product complies with the QB/T5338‑2018 standard and is compatible with UPVC and aluminum profiles with a thickness of 40–60 mm. It can be used in conjunction with hinge kits and five-piece door and window hardware sets. With excellent corrosion and wear resistance, the manufacturer offers a 5-year warranty, making it the preferred safety hardware for windows in high-rise residential buildings and children’s rooms.

I. All-Zinc Alloy Lock Body with Customizable Surface Finish, Weather-Resistant and Durable
The entire unit is cast as a single piece from thickened zinc alloy, featuring a robust structure that resists prying and compression. It remains resistant to deformation and breakage even under long-term, frequent twisting. Surface finishes can be customized according to customer requirements; the standard finish is pearl chrome plating, which offers a fine, smooth metallic texture that is wear- and scratch-resistant. Custom colors require a minimum order quantity of 1,000 sets.
The latch pull strength exceeds 350 N·m. The product has passed a 100,000-cycle durability test, a 500-hour neutral salt spray test, and a 4H surface hardness test. The plating exhibits strong adhesion, ensuring it resists rust, peeling, and loss of luster even under prolonged exposure to sunlight and humidity in outdoor environments such as balconies, thereby meeting the weather resistance requirements for long-term outdoor use.

II. Two- and Three-Digit Combination Lock Structures: Keyless Security Protection
1. Three-digit combination lock: Three independent combination wheels offer up to 10,000 possible combinations, providing enhanced anti-theft protection. There is no need to carry keys, completely eliminating the hassle of lost or forgotten keys;
2. The combination can be adjusted independently; operation is simple, and the code can be changed as needed for flexible use;
3. Child Safety Lock: Once locked, the handle cannot be turned at all, effectively preventing children from accidentally opening the window and falling from heights, thereby comprehensively enhancing home safety.
The sleek, curved, streamlined design is ergonomic, with rounded edges and no sharp corners at the grip area. Opening the window is smooth and effortless, balancing practical functionality with minimalist, modern aesthetics.

III. Compatible with Multiple Profile Sizes, Complete Accessories, and Easy Installation
Compatible with UPVC and aluminum alloy single-sash casement window profiles with thicknesses ranging from 40 to 60 mm; comes standard with square shafts and screws. The base features pre-drilled universal standard mounting holes, allowing direct integration with sliding hinges and five-piece door and window hardware sets to form a complete hardware system. Standard grooving eliminates the need to modify profiles, saving time and effort for window and door manufacturers during bulk assembly and reducing labor costs.

IV. Rigorous Testing + 5-Year Warranty, Suitable for Residential and Commercial Projects
Every product undergoes rigorous testing before leaving the factory, including torsional fatigue, wear resistance, and corrosion resistance tests. The internal drive mechanism operates smoothly without jamming or unusual noises, remaining secure even after long-term use. The product comes with an official 5-year warranty and comprehensive after-sales support.
Widely applicable to single-panel casement windows for home renovation, skylights for real estate projects, and casement windows for retail stores, these products meet the needs of both domestic home renovation projects and bulk procurement for export.