International Organization for Standardization (ISO)
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ISO 1536:1975
Scope
Specifies the diameters, length and manufacture of the belt pulleys for troughed belt conveyors (others than portable conveyors).
ISO 1536:1975 history
1975ISO 1536:1975 Continuous mechanical handling equipment for loose bulk materials; Troughed belt conveyors (other than portable conveyors); Belt pulleys