Load bars (also known as shoring bars or cargo bars) are used to create a rigid mechanical divide within a box van to prevent the vehicle's load from moving around. They are typically used to secure heavy, wheeled loads such as supermarket roll cages and stillages containing liquids.
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Polyester webbing has an amazing strength-to-weight ratio. For example, the break strength of 50mm lashing webbings can sometimes exceed 7.5 tonnes!