Tubular Lever Lockset

Reliable performance and consistent durability define this Tubular Lever Lockset, a heavy duty door locking solution suitable for both residential and commercial applications. The structure combines solid zinc alloy die-cast lever handles and rosettes, ensuring long-term strength and resistance to daily wear. With a high-quality brass cylinder and precision brass keys, it delivers stable locking performance and enhanced security over extended use cycles. This lockset supports a wide range of wooden and metal doors, with adjustable backset options that improve installation flexibility across different door structures. Tested to meet ANSI Grade 3 standards and exceeding 200,000 operation cycles, it offers dependable functionality for projects requiring consistent quality and supply reliability. Each set includes a complete installation solution with latch, striking plate, fixing materials, and manual, allowing efficient assembly and reduced installation time.

1. Zinc Alloy and Brass

The DDLK017 Tubular Lever Lockset combines solid zinc alloy and brass components to support accurate handle forming, lock connection, and mechanical operation. Zinc alloy allows the lever profile to be formed consistently, while brass suits parts requiring precise engagement. This material combination serves residential and commercial door projects and supports standardized purchasing and product inspection.

2. Tubular Lock Installation

The product uses a tubular mechanism, allowing door manufacturers to prepare the door according to the required cross bore and edge bore positions. The compact Tubular Lever Lockset reduces the need for a complex mortise pocket and works for new doors, replacement work, and standardized installations. Confirming door thickness and backset before ordering helps improve assembly accuracy.

3. Two Adjustable Backsets

DDLK017 adjusts between 2-3/8-inch and 2-3/4-inch backsets, corresponding to common 60mm and 70mm door-edge dimensions. Installers can set the latch according to the measured distance from the door edge to the bore center. One Tubular Lever Lockset can therefore fit different door preparations, reducing stock variations and simplifying on-site allocation across multiple batches.

4. 35–45mm Door Thickness

The lockset fits doors from 1-3/8 to 1-3/4 inches thick, equal to approximately 35mm to 45mm. This range covers many wooden, metal, interior, and exterior doors. Defined compatibility helps buyers verify building door schedules and allows manufacturers to confirm connector and lever positions. The Tubular Lever Lockset can then be specified consistently by door material and location.

5. Seven Architectural Finishes

DDLK017 is available in satin stainless steel, polished stainless steel, polished brass, matte black, PVD, antique brass, and antique copper. These finishes coordinate with modern office doors, residential timber doors, and traditional commercial interiors. Buyers can match the Tubular Lever Lockset with hinges, door stops, and closers to maintain consistent hardware colors throughout the project.

1. Apartment Interior Doors

Bedrooms, studies, and storage rooms in apartments can use the Tubular Lever Lockset for convenient everyday access. Its 35mm to 45mm door range suits many residential wooden doors, while 60mm and 70mm backsets accommodate different preparations. Satin stainless steel, matte black, and brass finishes coordinate with contemporary or traditional residential interiors.

2. Office Rooms

Private offices, meeting rooms, and internal work areas can use DDLK017 for daily door operation and space management. The Tubular Lever Lockset requires less door-edge machining than a mortise lock. Two adjustable backsets accommodate varied bore positions, while polished stainless steel, PVD, and matte black finishes coordinate with office partitions and metal doors.

3. Hotel Service Rooms

Staff offices, storage rooms, equipment rooms, and service corridors require clearly specified locks that support volume installation. DDLK017 fits wooden and metal doors from 35mm to 45mm thick. Seven finish choices allow the Tubular Lever Lockset to be allocated by guest area, service zone, or selected door color while maintaining an organized hardware schedule.

4. Commercial Stores

Offices and storage areas in retail stores, studios, and service businesses can use the Tubular Lever Lockset. Its tubular mechanism supports new-door installation and replacement projects, while adjustable backsets fit 60mm and 70mm preparations. Solid zinc alloy and brass components with multiple finishes also support centralized purchasing and consistent appearance across chain-store locations.