BR-612 Double Cylinder Dead Lock, Hook Tongue Aluminum Sliding Door Lock with Carbon Steel & Aluminum Construction

BR-612 double cylinder sliding door lock is precision manufactured with premium carbon steel, aluminum alloy and copper internal components, providing robust structural strength, wear resistance and long service life for daily sliding door operation. It adopts a double-sided key cylinder design, allowing key locking and unlocking from both sides of the door for flexible access control and improved space security. The lock body is treated with anodizing and electroplating surface processes, which effectively improves corrosion and rust resistance, maintaining a smooth metallic appearance even in humid outdoor environments. Its hook tongue locking mechanism delivers firm latching and strong anti-prying performance, making it ideal for securing aluminum sliding doors such as patio doors, balcony doors and commercial sliding partitions. A square tongue variant (model BR-612B) is also available to meet different installation requirements. This lock is widely used in residential and commercial aluminum sliding door projects, supporting bulk wholesale and OEM customization services.