Qingdao Haosail Machinery Co., Ltd.

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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.

Why Eye Eye Webbing Slings Are Essential for Safe Industrial Lifting
15 Jun

Eye webbing slings are indispensable lifting tools in modern industry. This article explains why they guarantee safety, flexibility and cost efficiency during lifting operations, and their core advantages for industrial applications.

Understanding Price Differences Among DIN 741 Wire Rope Clips of the Same Size
12 Jun

When sourcing DIN 741 wire rope clips, buyers may notice that quotations from different suppliers can vary even when the products share the same size designation. For example, two M16 DIN 741 wire rope clips may appear similar in shape and function, yet their prices can differ noticeably. One of the main reasons behind this difference is the variation in material usage.

Strength Verified: M10 European Type D Shackle Reaches 32.5 kN Breaking Load
05 Jun

In the lifting and rigging industry, product reliability is built on more than specifications—it must be supported by actual testing. To further verify the performance of our products, Qingdao Haosail Machinery recently conducted a tensile test on our M10 European Type D Shackle with electro-galvanized finish.

Understanding Grade 100 Chain: A Stronger Choice for Modern Lifting Applications
29 May

As lifting operations continue to demand higher efficiency and improved safety standards, Grade 100 lifting chains are becoming increasingly popular across construction, mining, transportation, offshore, and heavy industrial applications.As lifting operations continue to demand higher efficiency and improved safety standards, Grade 100 lifting chains are becoming increasingly popular across construction, mining, transportation, offshore, and heavy industrial applications

DIN580 & DIN582 Eye Bolt and Nut – Safe and Reliable Lifting Hardware
22 May

DIN580 and DIN582 eye bolts are widely recognized as industry-standard lifting points for rigging, hoisting, and lifting operations. Designed according to strict DIN standards, these eye bolts ensure safe, reliable, and durable connections for wire ropes, chains, and other lifting equipment. Choosing the right eye bolt and installing it correctly is essential to prevent accidents, ensure compliance with international safety standards, and optimize lifting efficiency.

What Is a Unilock Shackle?
22 May

A Unilock Shackle is a special type of lifting shackle designed with an integrated safety locking structure to improve connection security during lifting and rigging operations. Compared with traditional shackles, the Unilock design helps reduce the risk of accidental pin loosening caused by vibration, rotation, or dynamic loading.