Grade 70 Chain Weight Rating

The sum of the working load limits from all tie downs must be at least 50 of the weight of the cargo.

Grade 70 chain weight rating.

Grade 43 aka grade 40 has higher tensile strength and abrasion resistance and comes with a higher price tag. Alloy chain grade 80 or grade 100 should be used for overhead lifting. Calculating the minimum number of tie downs depends on the length weight and type of cargo. The increased strength of grade 70 chain allows for easier handling and the reduced number of chains required by the north american standard for.

G70 binder chains are also referred to as tow chains or transport chains spectrum 7 or system7. The chain is subjected to a more profound heat treatment which produces a very strong and yet very light chain link. It includes clevis grab hooks at each end. It is not rated safe for overhead lifting.

While we don t sell these chain grades on our website you can always call in to order them. The links of the chain are formed from low carbon steel wire and the size of the link is actually referring to the size of the wire that was used. Grade 70 transport chain is also called grade 70 truckers chain as it s common in securing loads for over the road hauling. Astm states that alloy chain shall.

Boasting heavy duty welded construction the high quality chain s yellow zinc finish offers lasting weather resistance. Grade 70 chain is embossed using a 7 70 or 700. If the working load limit of the tightening device is less than the tie down chain the working load limit will be reduced to the lower value. The higher the grade the greater the break strength.

Grade 70 tow chain is a high strength carbon steel chain that is ideal for securing cargo recovering vehicles and removing tree stumps. The chain s working load limit will have to be of sufficient strength to support the weight of the load plus any additional forces imposed by angles and hitch type s used. Grade 70 chain typically has a 20 higher working load limit than high test chain or grade 43 chain. Grade 7 and grade 70 chain are the eventual evolution of grade 4 40 and 43 chain.

Which chain grade should be used for which type of application. With galvanized chain it basically boils down to how much carbon is in the steel. Grade 80 alloy chain is heat treated making it safe and rated for overhead lifting. Beaver grade l anchor chain 11 beaver trailer safety chain 12 beaver grade 50 stainless steel lifting chain pewag 13 beaver grade 70 transport chain 14 beaver grade 80 t lifting chain b alloy 15 beaver grade 80 fishing line chain 16 beaver grade 100 lifting chain pewag weissenfels 17.

Grade 70 material steel maximum working load lbs 4700 lbs. Product length 20 ft. Grade 30 aka proof coil has less carbon and is good service duty chain.