Core Product Parameters and Manufacturing Processes

Cangzhou Bóbīn Trading Co., Ltd.'s cantilever beams are crafted using high-strength Q355B/Q235B steel as the core material—carefully selected and tailored based on specific load-bearing requirements. The manufacturing process involves multiple precision steps, including CNC precision cutting, integral welding, shot blasting for rust removal, and advanced anti-corrosion treatments such as hot-dip galvanizing or fluorocarbon coating. The product’s structural design centers around a robust "main cantilever beam + fixed-end support + adjustable external extension segment + fall-prevention device." The main cantilever beam comes in various cross-sectional profiles, including H-shaped steel (e.g., HW150×150, HW200×200) and I-beam types (e.g., I14, I16, I18). Standard overhang lengths range from 1.5m to 4m, with custom lengths up to 5m available upon request to meet project-specific needs. At the fixed end, anchor bolts—specifically high-strength M20-M30 bolts—are used for rigid connections to the building structure. Overall installation accuracy is tightly controlled within ±3mm, ensuring seamless integration and precise alignment with the architectural framework.

Core Performance Advantages of the Product

1. Exceptional Load-Bearing Performance: Leveraging the superior mechanical properties of high-quality steel (Q355B yield strength ≥355 MPa), our cantilever beams of various specifications can support rated loads ranging from 2 tons to 8 tons, reliably accommodating scaffolding, formwork, construction materials, and other heavy loads. Moreover, during extreme load tests, deflection deformation remains within the limit of L/250 (where L is the cantilever length), significantly exceeding industry-standard requirements and ensuring maximum construction safety.

1. Structurally Stable and Resistant to Lateral Displacement: The main cantilever beam is fabricated using a full-penetration welding process, with welds undergoing non-destructive testing (meeting the Level 2 weld standard specified in GB/T 11345-2013). Combined with the fixed-end "triangular stability" support design, this significantly enhances the structure's resistance to lateral displacement. Under challenging conditions such as strong winds or construction vibrations, the lateral displacement remains ≤5mm, effectively preventing structural sway that could pose safety risks.

1. Weather-resistant, corrosion-proof, and highly durable: The surface is treated with hot-dip galvanizing (zinc coating thickness ≥85 μm) or fluorocarbon paint spraying (coating film thickness ≥60 μm), providing excellent protection against rainwater erosion during construction, cement slurry corrosion, and prolonged exposure to outdoor elements. In typical construction environments, this ensures a service life of 8 to 12 years, significantly reducing long-term maintenance and replacement costs.

1. Flexible Adaptation, Easy Operation: Equipped with an adjustable overhanging section (adjustment range ±200mm), it can be precisely tailored to suit varying floor heights and working areas during construction. Installation requires no complex or bulky equipment—simply use a tower crane in combination with manual labor. The fixed-end anchor bolts are conveniently installed, and the core connection process can even be completed by a single worker, significantly reducing construction preparation time.

1. Comprehensive safety protection: Equipped with built-in fall protection devices (including anti-fall blocks and steel wire rope anchor plates), seamlessly compatible with construction safety nets and lifeline systems. Additionally, collision-resistant buffer pads are installed at the ends of cantilever beams, providing all-around protection for both workers and equipment—fully compliant with the requirements of the "Technical Code for Safety of High-Altitude Operations in Building Construction" (JGJ80-2016).

Applicable Fields

Cantilever beams, thanks to their stable load-bearing performance and flexible adaptability, are widely used in:

◆ Structural construction: Used in the construction of high-rise residential buildings and commercial complexes, this method involves erecting cantilevered support structures for external scaffolding, replacing traditional ground-based scaffolds to minimize ground space usage and better suit compact construction sites.

◆ Exterior wall renovation work: As cantilevered load-bearing components serving as construction platforms during processes such as exterior wall insulation, coating, and curtain wall installation, these elements support workers and renovation materials, ensuring stable operations at height.

◆ Roofing Construction Work: Used in scenarios such as flat roof PV bracket installation, roof waterproofing construction, and billboard erection. It serves as the supporting structure for cantilevered work platforms, perfectly tailored to meet the complex construction needs of roofing projects.

◆ Bridge ancillary construction: In projects such as bridge sidewalk paving, guardrail installation, and pier inspection and maintenance, suspended maintenance platforms are erected to provide workers with a safe and stable working space.

◆ Municipal infrastructure construction: In scenarios such as the installation of noise barriers on urban overpasses and decorative projects at tunnel entrances, it serves as an overhanging load-bearing structure, perfectly suited for working in high-altitude, confined spaces.

Leveraging the company's end-to-end production control system—spanning 10 rigorous quality inspection processes from raw material entry to finished product shipment—and a comprehensive quality traceability framework, our cantilever beam products consistently meet industry standards such as the "Code for Acceptance of Construction Quality of Steel Structures" (GB50205-2020). Each batch comes with a detailed quality inspection report and an installation guide, ensuring precise compatibility with diverse construction project requirements, thereby providing robust support for safe and efficient construction both domestically and internationally.