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    • Undercut Anchoring System Manufacturers

    The undercut anchoring system can effectively fix marble, granite, microcrystalline stone, ceramic board, crystal glass, and various artificial fiber boards, etc., suitable for plate thicknesses of 8-40mm.
    About Us
    Jiangsu Aozheng Metal Products Co., Ltd.

    Jiangsu Aozheng Metal Products Co., Ltd. is a professional industry and trade integrated enterprise, with a modern production plant covering an area of 32,000 square meters. We specialize in the R&D, production and supply of a full range of high-quality construction hardware products. Our core product portfolio includes exterior wall cladding fixing system brackets, C channels, seismic support brackets, anchor bolts, cast-in channels, concrete embedded parts and photovoltaic bracket clamps, which cater to various customized construction and engineering installation requirements. Our products are manufactured from premium raw materials including stainless steel, aluminum alloy, carbon steel and low alloy steel. Equipped with advanced industrial production technologies, we adopt automated cutting, extrusion, stamping, welding, CNC machining and laser processing craftsmanship. Strict standardized production and precise processing procedures are implemented throughout production to ensure stable, reliable and high-standard product quality. Integrating raw material forming and mechanical processing, our factory operates as a large-scale, diversified and professional manufacturing base for construction hardware. Upholding strict quality standards and high-end global market positioning, we achieve an annual production capacity of 8,000 tons of diverse building materials. Our products are widely exported to dozens of countries and regions across the globe, covering the United States, Germany, Italy, Belgium, the United Kingdom, Japan, Australia, Canada, Russia, Central Asia and the Middle East. We have established long-term, stable and strategic cooperative relationships with large construction enterprises and renowned engineering teams worldwide. Supported by superior product quality and professional all-round services, we have become a core and trusted building material supplier for our global partners in China.

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    • A heavy-duty combined stone pendant
    • An integrated stone back bolt
    • An integrated expansion ring and a back bolt with an integrated expansion ring
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    Undercut Anchoring System Industry knowledge

    Undercut Anchoring System Manufacturers

    As a Undercut Anchoring System Manufacturers, we match product configuration to the application, operating limits, interfaces and acceptance criteria defined for each project.

    Jiangsu Aozheng Metal Products Co., Ltd. is a professional Undercut Anchoring System manufacturer and supplier based in China. With a 32,000 m² production plant and an annual capacity of 8,000 tons, we engineer and produce complete undercut anchoring solutions for natural stone, ceramic, and glass facades. Our range covers knocking-in, screw-in, and aseismic anchors, plus portable drilling machines, all designed for reliable panel fixing in ventilated facades and curtain walls.

    We control every step from raw material to finished hardware—automated cutting, stamping, CNC machining, and laser processing—ensuring consistent dimensional accuracy and mechanical performance. Our team works directly with project engineers to match anchor type, material grade, and drilling equipment to the specific panel system and substrate conditions.

    Our Undercut Anchor Range

    Each anchor family serves a distinct installation method and load requirement. We supply the full system, including anchors, setting tools, and drilling machines, so you can standardize on one source.

    Knocking-Undercut Anchor

    Drop-in style anchor for quick installation. The expansion sleeve is driven into a pre-drilled undercut hole, creating a positive mechanical lock. Ideal for standard stone panels and high-speed facade installation.

    Screw-In-Undercut Anchor

    Rotary back bolt design that threads into the undercut. Provides a detachable connection, suitable for large-format panels and applications requiring future panel replacement.

    Aseismic-Undercut Anchor

    Enhanced with a conical screw and expansion cannulas for higher pull-out resistance. Designed for seismic zones and high-wind-load facades.

    Drilling Machine

    Portable undercut drilling machines with diamond bits for on-site hole preparation. Ensures precise undercut geometry for reliable anchor seating.

    Application Fit and Material Compatibility

    Our undercut anchoring systems are engineered for panels from 8 mm to 40 mm thick, covering:

    • Marble, granite, and other natural stones
    • Microcrystalline stone and engineered stone
    • Ceramic and porcelain tiles
    • Crystal glass and glass panels
    • Fiber cement and artificial boards

    Anchors are available in stainless steel grades (e.g., 304/316) for corrosion resistance, with carbon steel options for internal applications. We select the anchor geometry and material based on panel weight, wind load, and environmental exposure.

    Critical Specifications and Performance

    Each anchor type is defined by its hole diameter, panel thickness range, and load capacity. Our engineering team provides load data based on the specific substrate and panel configuration.

    Anchor Type Installation Panel Thickness Typical Use
    Knocking-Undercut Drop-in, hammer set 8–40 mm Standard facades, fast installation
    Screw-In-Undercut Rotary insertion 10–40 mm Large panels, removable connections
    Aseismic-Undercut Torque-controlled 12–40 mm Seismic zones, high loads

    Configuration and Customization

    We offer standard anchors in common sizes (e.g., M6, M8) and custom geometries based on your drawings or samples. Our in-house mold and tooling team develops custom expansion sleeves, threads, and coatings to meet project-specific pull-out values or installation constraints.

    For large-format panels, we provide system solutions that include multiple anchors per panel, edge distance optimization, and compatible subframe brackets. We also supply drilling machines and diamond bits to ensure correct hole geometry on site.

    Quality Assurance and Testing

    Quality control is integrated at every production stage. We operate our own laboratory with spectrometers, tensile testers, and hardness testers to verify chemical composition and mechanical properties. Each batch is inspected for dimensional accuracy, surface finish, and coating integrity. Our products are manufactured to international standards, and we can provide test reports and certifications for export documentation.

    Installation and Maintenance Support

    We provide installation guidelines and technical documentation for each anchor type. For projects, our engineers can assist with anchor spacing, edge distances, and torque specifications. Drilling machines are supplied with operation manuals, and spare parts are available for long-term maintenance. We also offer on-site training for installation crews upon request.

    Information We Use to Configure Your Solution

    To prepare a precise quotation and technical proposal, we need the following project data:

    • Panel material, thickness, and dimensions
    • Facade type (ventilated, curtain wall, etc.) and weight per panel
    • Wind load and seismic zone (if applicable)
    • Substrate material (concrete, steel, etc.)
    • Required anchor material and corrosion protection
    • Installation method preference (drop-in, screw-in)
    • Quantity and delivery schedule

    Send us your drawings or samples, and our R&D team will confirm the optimal anchor configuration and provide load data.

    Frequently Asked Questions

    What is the difference between knocking and screw-in undercut anchors?

    Knocking anchors are driven into a pre-drilled undercut hole, providing a fast and secure connection. Screw-in anchors are threaded into the undercut, allowing for removal and reinstallation, which is useful for large panels or future access.

    Can you provide anchors for 40 mm thick granite panels?

    Yes, our anchors are designed for panels from 8 mm to 40 mm. For thicker panels, we can customize the anchor length and expansion sleeve to ensure proper engagement.

    Do you supply the drilling machine with the anchors?

    Yes, we offer portable drilling machines and diamond bits as part of our undercut anchoring system. This ensures the correct undercut profile is achieved on site.

    What materials are your anchors made of?

    We manufacture anchors from stainless steel (304, 316), carbon steel, and low alloy steel. For coastal or corrosive environments, we recommend stainless steel grades with appropriate surface treatment.

    How do you ensure the quality of undercut anchors?

    We perform in-process inspections and final testing using our laboratory equipment, including tensile and hardness tests. We also provide material certificates and test reports upon request.

    Related Products and Categories

    Our portfolio also includes Products, Facade System Of Aluminum for applications with different operating ranges, interfaces or integration requirements.