







The ingenious S-hook, a versatile metal connector, derives its name from its signature 'S' shape. It is primarily classified into two pivotal categories: the S-hook for building tie and the S-hook for lifting and hoisting. Here's a detailed overview:
1. S-hook for Building Tie Up
1. Function and Structure:
Expertly crafted to secure the positioning between stressed steel bars within reinforced concrete walls, the S-hook is essential for preventing displacement and enhancing structural stability. Its ends adeptly hook at steel bar intersections, creating an 'S'-shaped tie, meticulously arranged in a striking plum blossom pattern (such as Φ 8 @ 600).
-Design Basis: Tailored to meet specific engineering requirements, these S-hooks are typically fashioned from Φ 8 steel bars, unless otherwise specified.
2. Application Scenarios:
These hooks find their vital application in cast-in-place concrete walls, beams, columns, and other areas demanding reinforced steel mesh integrity, playing a crucial role in the seismic design of buildings.
2. S-hook for Lifting and Hoisting
1. Material and Characteristics:
Crafted from high-strength alloy steel, such as grade 80 specialized steel for rigging, or premium stainless steel like SUS304, these S-hooks boast exceptional load-bearing capacity, wear resistance, and corrosion resistance.
Structure: Precision-forged to ensure a flawless surface devoid of cracks. Welding or casting is strictly avoided to prevent stress concentration and potential fractures.
2. Core Functions:
Ideally designed for handling heavy loads, these hooks are instrumental in cranes and lifting equipment, ensuring seamless load transfer and secure lifting through the synchronized use of hooks, ropes, or chains.
3. Usage Guidelines:
Installation Requirements: The hook must be thoroughly embedded at the base to prevent deformation due to twisting or hardening; overloading or repairing of worn/cracked S-hooks is strictly prohibited.
Applicable Fields: Perfectly suited for heavy equipment lifting in industries like power, metallurgy, bridge construction, and industrial production lines.
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3. Other Types of S-hooks
1. Stainless Steel S-hook Spring:
Constructed from elastic stainless steel, this variant offers exceptional corrosion resistance and plasticity, ideal for hanging and securing lightweight items in homes and electronic devices.
Design Parameters: The spring constant (k=Ed /(64D ³/n ²)) is calculated to optimize elasticity and ensure perfect size compatibility.
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4. Summary
The S-hook, with its distinctive 'S'-shaped structure, impeccably serves the purposes of tying, hanging, or fixing. It stands as a staple in construction engineering, heavy industry, and everyday applications. Compliance with type distinctions, and adherence to material, load, and installation specifications are imperative to guarantee safety and reliability.