BS 2969:1980

This standard BS 2969:1980 Specification for high-tensile steel chains (round link) for chain conveyors and coal ploughs is classified in these ICS categories:

• 53.040.20 Components for conveyors

This International Standard specifies the requirements for a range of high grade special purpose calibrated, high-tensile, electrically welded, steel chains (round link) for use with machines and equipment in mining, such as the following:

1. conveyors, flexible and rigid, of the chain type, chain belt conveyors, gate end and stage loaders;
2. coal ploughs, coal cutters and power loaders;
3. bucket elevators;
4. other similar machines used in mines.

This International Standard covers a size range from 14 to 30 mm. Three grades of quality (B, C and D) are specified with regard to the mechanical properties of chain. The values given for grade D in Table 3, Table 4, Table 7 and Table 8 are, however, provisional.

Chains covered by this International Standard are not designed for lifting appliances, such as cranes and slings.

Calibrated chains having links 14 mm to 30 mm diameter, three grades (B, C and D). Dimensions, material, test requirements, marking, inspection, test certificate (not for lifting purposes).