Campbell-Mack Supply (1985) Ltd.

Calgary (403) 250-5076

Edmonton (780) 466-2747

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Grade 30, also known as 'Proof coil' is a common commercial quality chain stocked in a variety of finishes such as self-color, zinc coated and hot dip galvanized. Grade 30 is a general purpose chain for barrier, safety chain and suspension type applications. Proof coil is not for overhead lifting or where maximum tensile nor impact strength is crucial. 

​​WARNING: Do not use for overhead lifting and never exceed the working load limit.