Qingdao Haosail Machinery Co., Ltd.

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ARTICLES& NEWS

HAOSAIL holds over 10 invention patents and 40 utility model patents, reflecting our commitment to R&D and technological advancement. We prioritize
stringent quality control and testing processes to ensure compliance with international standards and customer requirements.

G80 Swivel Self-locking Lifting Hook, High Strength Rigging Lifting Hardware
15 Oct

Our factory supplies Grade 80 swivel self-locking lifting hooks, widely used for industrial lifting, construction and rigging applications. Made of high-quality alloy steel, the hooks feature excellent load capacity and anti-fatigue performance, equipped with safety self-locking latch to prevent load falling off. All products pass strict load testing and meet international lifting standards.

G80 Lifting Components: What Buyers Need to Know
10 Oct

G80 lifting components are widely used in chain slings and industrial lifting applications. Before purchasing, buyers should pay attention to working load limits, material quality, heat treatment, product markings, and quality inspection to ensure reliable performance and safe lifting operations.

What is an Eye Bolt? Guide to Lifting Eye Bolts for Rigging Applications
10 Oct

Eye bolts are essential rigging hardware widely used for lifting, hoisting and load anchoring across construction, machinery, marine and transportation industries. This article introduces the structure, material, selection rules and safety notes of forged eye bolts, helping buyers understand key parameters when sourcing eye bolts for lifting projects.

Marine Turnbuckles: Key Features and Buying Guide
28 Sep

Marine turnbuckles are widely used for tensioning and adjusting wire ropes and cables in yachts, ships, marine structures, and coastal applications. Because they are often exposed to moisture and saltwater, material selection, corrosion resistance, thread quality, and overall construction are especially important. This article introduces the key points buyers should consider when selecting marine turnbuckles.

From Forging to Final Inspection: How We Control Shackle Quality
22 Sep

Shackles are critical lifting components, and their quality depends on much more than the final appearance. From raw material selection and forging to heat treatment, machining, load testing, and final inspection, every production stage can affect the safety and performance of the finished shackle. In this article, we explain how we control shackle quality throughout the manufacturing process.

What Should You Check Before Buying Turnbuckles?
17 Sep

Choosing the right turnbuckle is about more than size and price. Material, thread quality, forging, load testing, and surface treatment all play an important role in product performance and reliability.