Astm states that alloy chain shall be able to elongate a minimum of 20 before fracture 7 3 5.
Grade 30 chain specifications.
Do not use for lifting people or loads over people.
We also added information on the grade 30 chain and grade 43 chain.
Welded chain specifications 2020 04 16t14 17 26 04 00 proof coil chain grade 30 a general utility chain for such uses as log chain cargo lashing chain pipe line hanging chain tailgate guard rail tow and switch chain.
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.
While we don t sell these chain grades on our website you can always call in to order them.
The grade number used by manufacturers is an indicator toward the ultimate break strength of chain.
We turned one our most popular posts what are the differences between grade 70 chain grade 80 chain grade 100 chain and grade 120 chain into a simple chart for quick and easy chain grade comparison.
Grade 30 galvanized steel proof coil chain grade 30 proof coil chain is a heavy duty grade 30 proof coil chain is a heavy duty high strength welded steel chain.
The higher the grade the greater the break strength.
Grade 30 is an excellent all purpose commercial quality chain.
Every foot of proof coil grade 30 high test grade 43 and transport grade 70 chains are proof tested.
With galvanized chain it basically boils down to how much carbon is in the steel.
The american society of testing materials astm has published safety standards and regulations for these chain grades.
Alloy chain grade 80 or grade 100 should be used for overhead lifting.
Lower chain grades g30 and g43 grade 30 chain.
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.
See chart for astm specification number.
Nacm welded steel chain specifications adopted april 26 2003 6 8 1 1 5 16 8 7 mm and 3 8 10 mm grade 43 and 70 chain shall be embossed at intervals no greater than 1 ft.
It is designed for use in towing binding logging and other applications requiring high strength chain.
Not for overhead lifting.
Where attachments such as hooks or rings are desired for use with chain in sustaining loads care should be taken to select the attachments of the type grade and size compatible with the chain with which the attachments are intended to.
Grade 30 aka proof coil has less carbon and is good service duty chain.
