Chain (Rocna Knowledge Base)
2014-4-28u2002·u2002Low tensile chain is G3 or G30, which is to say it is formed from steel with a tensile strength of 300 MPa. This is commonly labeled as 'BBB' or 'proof coil'. This type is also referred to as grade 'L' in Australia. Medium tensile chain is G4 or G40 (tensile strength of 400 MPa).
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