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.

Turnbuckles Explained: Types, Applications and Safety Considerations
27 Jul

Turnbuckles are essential rigging components used for tension adjustment and load control in construction, marine and industrial applications. This article explains different types of turnbuckles, their common applications and important safety considerations to help users select and use the right rigging solution.

 Understanding Angular Pull Testing in Rigging Products: A Higher-Level Performance Verification Method
27 Jul

In the rigging industry, tensile testing is one of the most important methods to verify the strength and reliability of lifting components. Traditional straight-line tensile testing evaluates the basic load-bearing capacity of products under axial force. However, during real lifting operations, rigging components are often exposed to more complex loading conditions caused by lifting angles, uneven loading, or misalignment.

How to Inspect Webbing Slings Before Every Lift: A 5-Step Safety Checklist
20 Jul

A webbing sling may look fine at first glance, but hidden damage can lead to equipment failure and serious accidents. Performing a quick inspection before every lift helps ensure safety, extends sling service life, and reduces costly downtime. This simple five-step checklist covers the key points every operator should check before using a webbing sling.

Grade 100 Connecting Link Load Test: Verifying Strength and Quality of G100 Chain Components
19 Jul

In a Grade 100 chain sling system, connecting components are essential for transferring loads between chains, hooks, and other lifting accessories. As a commonly used component, Grade 100 Connecting Links (G100 Connecting Links) provide a secure connection solution for chain assemblies and are widely applied in heavy-duty lifting operations.

Why Are Endless Round Slings Becoming Essential in Construction and Mining Industries?
14 Jul

Endless round slings are becoming an essential lifting solution in construction and mining industries due to their lightweight design, high strength, flexibility, and excellent load protection. Discover why more companies are choosing polyester round slings for safe and efficient heavy lifting operations.

Web Sling Connecting Link vs. Standard Connecting Link
10 Jul

In lifting and rigging applications, selecting the correct connector is just as important as choosing the appropriate sling or chain. While the Web Sling Connecting Link and the Standard Connecting Link may appear similar at first glance, each is specifically engineered for a different lifting system.