Understanding the Difference between Chain Grades and
2020-2-20u2002·u2002This number is what we see today G30, G43, G70, G80 & G100 and the common chain grades. The number after each letter is N/mm 2. For example, G80 means that the maximum stress on the chain at ultimate strength is 800 newtons per millimeter squared. Working Load Limit (WLL) of Chain
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