What is a grade 70 chain?
Also asked, what is grade 70 chain used for?
Grade 70 chain, or G70, is constructed of high-strength, heat-treated carbon steel. It is used by truckers, loggers and highway crews for load securement, towing, lashing and as trawler chain.
Subsequently, question is, how can you tell a 70 grade chain? First, all of Laclede's domestic chain is stamped about every six links to help you identify the grade of chain. Just look for the “L” and then the number after it. Each number following the “L” corresponds with a grade of chain. On grade 70 this can also show that the chains are DOT approved!
Consequently, is grade 70 chain good?
Grade 70. Made from a higher strength, heat-treated carbon steel that has a load rating approximately 20 percent higher than Grade 43. The gold chromate finish makes it easy for DOT officials to recognize. Typically used by truckers, loggers, and highway crews for load securement and towing.
What is the grade of a chain?
The chain grade numbers which manufacturers use are actually one tenth of the actual grades. Therefore, our grade 80 is 800, grade 70 is 700, and so on. The grade refers to the tensile strength of the chain. This is expressed in newtons per square millimeter (a newton is approximately 0.224805 lbs).