Grade 30 Chain Rating

General purpose economical chain.

Grade 30 chain rating. Grade 30 aka proof coil has less carbon and is good service duty chain. The grade number used by manufacturers is an indicator toward the ultimate break strength of chain. G30 300 newton square millimeter 43 511 pound force per square inch. The higher the grade the greater the break strength.

Also called grade 43 high test chain or grade 43 tow chain this is common in the towing and logging industries. Grade 30 chain is a general purpose chain often used in industrial and agricultural applications. It is designed for use in towing binding logging and other applications requiring high strength chain. Not for overhead lifting.

Grade 30 chain is a general purpose carbon steel chain for farm industrial and home applications such as log chain cargo lashing pipeline hanging tailgate guard rail tow and switch chain. Grade 43 chain is embossed using a 43 or a g4. Used in a variety of industries and jobs including light construction agricultural applications and the marine industry. Typically used for container securement logging farming towing marine applications and as general purpose utility chain.

It can be used for load securement but is of less strength than grade 43 chain. Alloy chain grade 80 or grade 100 should be used for overhead lifting. Typical chain uses grade 30. Grade 30 proof coil chain is a heavy grade 30 proof coil chain is a heavy duty high strength welded steel chain.

Astm states that alloy chain shall be able to elongate a minimum of 20 before fracture 7 3 5. Grade 30 proof coil self color regular link grade 30 proof coil self color long link grade 30 proof coil electro galvanized regular link grade 30 proof coil electro galvanized long link grade 30 hot dipped galvanized. Grade 30 is an excellent all purpose commercial quality chain. Frequently used for swing sets borders crowd control and other general applications.

Zinc plated or polycoated yellow. Grade 30 chain is embossed using a 3 30 or 300. Do not use for lifting people or loads over people. Grade 30 proof coil chain is an excellent low carbon steel chain for general purpose applications.

Grade 70 transport chain is also called grade 70 truckers. With galvanized chain it basically boils down to how much carbon is in the steel. Minimum ultimate load is 4 times the working load limit. It is not rated safe for overhead lifting.