Qingdao Haosail Machinery Co., Ltd.

322C/322A Swivel Hook with Latch Features:

• 360° Swivel Capability for Tangle-Free Operation. A defining feature of the 322C/322A hook is its full 360-degree swivel design (at the hook base or shank connection). This allows the hook to rotate freely as loads shift during lifting, pulling, or transit—eliminating chain/cable twisting, tangling, or kinking. It ensures smooth load alignment, reduces stress on the hook and attached hardware, and simplifies positioning of the hook onto anchor points or load rings.

• Integrated Safety Latch for Anti-Disengagement Security. Equipped with a spring-loaded or gravity-assisted safety latch (typically a "keeper" or "gate" mechanism), the hook prevents accidental load disengagement. The latch automatically closes after the hook is attached to a load or anchor, creating a secure enclosure for the connection point. Even if the load shifts or vibrates (e.g., during truck transport or crane movement), the latch maintains a tight seal—critical for avoiding dangerous load drops in high-tension applications.

• High-Strength Material for Heavy-Duty Loads. Constructed from premium-grade alloy steel (common grades include A36, A572, or specialized heat-treated steels, depending on model) that undergoes quenching and tempering. This process enhances tensile strength, impact resistance, and wear resistance, allowing the 322C/322A hook to handle substantial working load limits (WLL)—often ranging from several hundred to thousands of pounds (specific WLL varies by size). The material also resists deformation under heavy stress, ensuring long-term structural integrity.

• Precision-Engineered Hook Geometry. The hook's "throat" (opening) and "bow" (curved body) are designed with optimized dimensions to accommodate standard load rings, chain links, or shackles. The throat width ensures a snug fit for compatible hardware (e.g., G70/G80 chain links), while the curved bow distributes load forces evenly across the hook’s body—reducing stress concentrations at weak points. This geometry minimizes the risk of hook bending or cracking under rated loads.

322C/322A Swivel Hook with Latch Typical Applications:

• Factory hoisting: It can be used to hoist various heavy machinery and equipment, parts, etc. For example, in automobile manufacturing plants, it is used to hoist large parts such as engines and frames; in mechanical processing plants, it is used to hoist large machine tool parts. Its rotation function facilitates the adjustment of the angle of the parts, and is convenient for installation and positioning.

• Port transportation: It is often used for loading and unloading of port cargo. It can be used with wire rope slings or chains to hoist containers, large steel and other goods. It can adapt to different hoisting angle requirements during the hoisting process to improve the operation efficiency. At the same time, the locking device can ensure that the goods will not fall off during the hoisting process.

• Construction engineering: In construction, it can be used to hoist building materials such as prefabricated panels, steel bar bundles, etc. It can also be used to connect and fix related parts during the scaffolding construction process to help construction personnel adjust the position and angle of scaffolding components more conveniently. In addition, in the curtain wall installation of high-rise buildings, it can be used to hoist glass curtain wall panels to ensure a safe and reliable installation process.

• Mining operations: It is suitable for the hoisting and traction of ore, mine cars, etc. in mines. For example, in underground mines, it is used to lift ore to the ground; in open-pit mines, it can assist in lifting large mining equipment components, or towing mine cars, etc., and can withstand the harsh working conditions and large loads in mining operations.

• Oil and gas industry: In the construction and operation of oil drilling platforms, it can be used to lift drilling equipment, pipes and other heavy objects. In the process of laying natural gas pipelines, it can also be used to lift and lay pipelines. Its high strength and good corrosion resistance can adapt to the special working environment of the oil and gas industry.

• Water treatment facility construction and maintenance: In the construction of water treatment plants, large equipment such as water pumps and filters can be lifted. In daily maintenance, it is used to lift and replace related parts, facilitate the installation and commissioning of equipment, and ensure the normal operation of water treatment facilities.

• Hoisting equipment matching: As an important accessory of lifting equipment, it can be installed on equipment such as cranes and electric hoists to expand the application range of lifting equipment, improve its flexibility and safety of operation, and is suitable for various occasions that require precise adjustment of lifting angles and positions.