When it comes to selecting and using lashing chains for freight, there are several important industry standards to consider.
The first is the working load limit (WLL). This is a critical parameter that determines the maximum safe load a lashing chain can bear. The WLL is based on factors such as the chain's diameter, material strength, and construction. It is essential to accurately calculate the required WLL based on the weight and characteristics of the freight being transported. For example, heavier and bulkier cargoes will require lashing chains with a higher WLL. Using a chain with an insufficient WLL can lead to chain failure and potentially dangerous cargo shifts during transit.
The material of the lashing chain also matters. High-quality alloy steel is commonly used due to its strength and durability. The steel should have the appropriate hardness and toughness to withstand the rigors of transportation, including vibrations, impacts, and changes in temperature. Additionally, the chain should be resistant to corrosion, especially if it will be used in environments with moisture or salt. For example, chains used in maritime freight transport need to have excellent corrosion resistance to prevent degradation over time.
Proper installation and tensioning of the lashing chains are equally important. The chains should be attached to the cargo and the vehicle or container in a secure and correct manner. This may involve using appropriate shackles, hooks, or other fittings. The tension in the chain should be adjusted to ensure that the cargo is held firmly in place but not over-tensioned, which could damage the chain or the cargo. Regular inspection of the lashing chains during transit is also necessary to check for any signs of wear, damage, or loosening.