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.

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.

How Much Weight Can an Eye & Eye Webbing Sling Actually Lift?
10 Jul

Learn how much weight an Eye & Eye Webbing Sling can actually lift. This guide explains WLL, lifting methods, sling angles, and factors that affect the safe working capacity of webbing slings.

Choosing the Right Chain Surface Finish: A Practical Guide for Different Working Environments
06 Jul

The performance of a chain depends not only on its material and strength grade but also on its surface finish. Different surface treatments provide varying levels of corrosion resistance, wear protection, and appearance, making them suitable for different working environments.

CB/T 3818 Marine Turnbuckles for International Marine Applications
26 Jun

Marine turnbuckles are widely used for adjusting and maintaining tension in wire ropes, chains, and other rigging systems aboard ships and offshore structures. CB/T 3818 is the Chinese marine industry standard for rigging turnbuckles and is widely applied in shipbuilding, vessel maintenance, port facilities, and offshore engineering. The standard covers the classification, technical requirements, inspection, and application of turnbuckles used in marine rigging.

Common Mistakes When Using Eye Eye Webbing Slings: A Complete Safety Guide
23 Jun

Eye Eye Webbing Slings provide safe and efficient lifting solutions, but incorrect usage remains one of the leading causes of lifting accidents. This article explores seven common mistakes and offers practical recommendations to help improve safety, protect loads, and maximize sling service life.

Steel Wire Rope 6x19 vs 6x36 : Which One Should You Use?
22 Jun

Wire rope slings are widely used in lifting, rigging, marine, construction, and industrial applications. Among the most common constructions, 6x19 and 6x36 wire ropes are frequently selected for sling assemblies. While they may appear similar, their structural differences significantly affect flexibility, abrasion resistance, fatigue performance, and service life.