Heavy-Duty Commercial Glass Door Patch Lock
Precision-Engineered Bottom & Center Lock Assemblies for Frameless Tempered Glass Partitions
Product Overview & Technical Specification
Commercial frameless glass installations require hardware that balances structural rigidity with minimalist aesthetics. This patch lock is engineered for 10 mm to 12 mm tempered glass doors, utilizing a dual-clamp mechanical fixation system that distributes clamping forces evenly to prevent glass stress concentration.
Technical Specifications Matrix
|
Parameter |
Specification Details |
|
Applicable Glass Thickness |
10 mm to 12 mm (Tempered / Toughened Safety Glass) |
|
Body Material |
Precision investment-cast Stainless Steel 304 / 316 or Forged Brass |
|
Surface Finishes |
Satin Brushed (SSS), Mirror Polished (PSS), Matte Black Electroplated, PVD Brass |
|
Lock Mechanism |
Euro Profile Cylinder (Brass core, pin-tumbler mechanism) / Thumbturn / Push-Plunger |
|
Durability Testing |
Certified to 200,000 opening/closing cycles (Exceeds EN 12209 standard) |
|
Glass Preparation |
Factory-defined cutout template required (Standard ISO glass notch/hole specs) |
|
Operating Temperature |
-20°C to +80°C (Suitable for interior climate-controlled and perimeter entries) |
Product Selection Guide
Match the door configuration, locking point, and security level for your specific architectural layout using the matrix below.
|
Series Code |
Function Type |
Configuration |
Mating Hardware |
Target Application |
|
PL-101-BT |
Bottom Patch Lock |
Single/Double Swing |
Floor Strike Plate, Floor Spring |
Main entrance doors, glass storefronts |
|
PL-102-CTR |
Center Deadbolt Lock |
Glass-to-Glass / Glass-to-Wall |
Strike Box or Wall Receiver |
Office partition meeting room doors |
|
PL-103-PLG |
Push-Plunger Lock |
Bottom Rail / Patch Integration |
Dustproof Floor Socket |
Secondary security / night latch |
Application & Compatibility
Office Partition Systems: Integrates with standard 10-12 mm frameless glass walls, interfacing seamlessly with patch hinges and hydraulic door closers.
Retail Storefronts: Withstands high-frequency daily cycling in commercial shopping centers.
Hospitality Interiors: Provides secure, low-profile locking for conference centers and hotel executive suites.
Note: Ensure glass fabrication drawings match exact cutout tolerances before tempering. Field adjustments to glass cutouts are impossible after the tempering process.
Manufacturing & Quality Control
Reliable hardware originates from controlled metallurgy and precision machining.
Material Verification: Raw stainless steel bars and ingots undergo XRF spectrometer testing to confirm strict compliance with AISI 304/316 chemical composition standards (Nickel content >= 8% for 304, >= 10% for 316).
Machining Precision: Body housings are processed on 4-axis CNC machining centers, maintaining dimensional tolerances within +/- 0.05 mm to ensure flawless alignment with internal locking components.
Surface Treatment: Multi-stage mechanical polishing followed by ultrasonic cleaning and passivation baths to eliminate microscopic burrs and enhance corrosion resistance. Salt spray testing (ASTM B117) exceeds 96 hours neutral salt spray without pitting.
Clamping Integrity Tests: Production batches undergo torque-load verification to ensure internal steel friction plates securely grip the glass panel under a minimum pull force of 1500 N.
Supplier Evaluation & OEM/ODM Capabilities
For global architectural hardware brands and large-scale distributors, supply chain stability and technical responsiveness are critical.
Production Capacity: Fully automated gravity casting and stamping lines supported by 30+ CNC milling machines, ensuring a stable monthly output of 40,000+ lock sets.
Custom Engineering: In-house tooling department capable of developing custom cover plates, proprietary laser-etched brand logos, and specialized keying systems (Master Key, Keyed Alike).
Compliance & Documentation: Full material test reports (MTR), dimensional inspection reports, and CAD/BIM drawing packages available upon project request.
Procurement & Ordering Guidelines
Minimum Order Quantity (MOQ): 50 sets per model/finish for standard stock items; 300 sets for custom finishes or branded OEM packaging.
Packaging Specification: Individual EVA foam-lined protective box, packed in master export cartons (10 sets/carton) with corrosion-inhibiting VCI film wrapping.
Lead Time: 15 to 25 business days for standard production runs; 30 to 35 days for custom OEM tooling or specialized PVD finishes.
Sample Policy: Working samples available for evaluation; freight collect or prepaid via DHL/FedEx courier account.
Frequently Asked Questions
Q: What prevents the patch lock from slipping on the glass over time?
A: Slippage is prevented through a combination of heavy-duty torque screws, thick internal fiber/rubber friction gaskets, and precision-machined internal grip teeth that bite into the torque-tightened clamping zone. Proper installation torque (18-22 N·m) must be applied using a calibrated torque wrench.
Q: Can these patch locks be keyed alike for multi-office commercial projects?
A: Yes. We offer master-keyed, keyed-different, and keyed-alike cylinder options using standard Euro profile brass cylinders, allowing integration with existing facility master key hierarchies.
Q: What is the corrosion resistance rating of the surface finishes?
A: Standard satin stainless steel (SSS) and polished stainless steel (PSS) finishes pass a 96-hour ASTM B117 salt spray test. For coastal or high-humidity environments, Grade 316 material specification is recommended.
Q: Are replacement lock cylinders available separately for maintenance?
A: Yes. All patch locks utilize standard Euro profile dimensions, allowing facility managers to replace or upgrade cylinders without removing the entire glass patch fitting assembly.