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Table – Working Load Limits (WLL) for Chain Chain Size in millimeters (inches) Unmarked Chain Grade 30 proof coil Grade 43 high test Grade 70 transport Grade 80 alloy Grade 100 alloy Chain Marking None 3, 30, 300 4, 43, 430 7, 70, 700 8, 80, 800 10, 100, 1000 7mm (1/4in) 580kg
Complete flatbedder’s guide on cargo chain grades, grade types and chain strength with chart. Learn how to identify grades and marking of transport chains. Grades wise chain usage and safety standards.
Welded Chain Specifications – Transport Chain (Grade 70) Significantly higher tensile strength for all load binding and tie-down applications, which permits you to hold a given load with the next smaller size chain than High Test.
23 kwi 2018 · Chain grades are a standard method for showing the ultimate breaking strength (tensile strength) of a chain. Grades help determine what sort of applications are appropriate for a given chain. Chain grades are determined by calculating newtons per square millimeter, using the formula “N/mm 2 ”.
The Working Load Limit is calculated by dividing the minimum breaking strength of the chain by the assigned safety factor rating. The grade and diameter of the chain are also used to determine the Working Load Limit.
The grade 70 chains are extremely strong for their light weight and are mostly used for loading on platform trucks in the transportation field. They are also widely used on farms, for wood transportation, towing and construction.
14 gru 2021 · Working Load Limit is calculated by dividing the minimum breaking strength of the chain by the assigned safety factor rating. The grade and diameter of the chain is also used to determine the working load limit.
