This standard specifies the structural form, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of fine aggregate flow time measuring instruments. This standard applies to the production, inspection and use of fine aggregate flow time measuring instruments.
JT/T 838-2012 Referenced Document
GB/T 191 Packaging.Pictorial marking for handling of goods
JT/T 838-2012 history
2012JT/T 838-2012 Flow time tester for fine aggregate