Sampling method of Geogrid
Specification for "GB/T17689-2008" (plastic geogrid) group is defined as: the same batch of raw materials, the same formula and the same under the condition of the technology of production of the same specifications of plastic geogrid as a group, each batch number shall not be more than 500 volumes, production of 7D is still less than 500 volume with the yield of 7D for a number of
The best way is to ask the quality inspection station, sampling is not the same everywhere
Sampling shall: in this batch of products were randomly selected from 3 volumes, the width and visual inspection in the inspection of qualified samples taken a roll, remove the outer layer length 500mm, intercept the full width of product 1m as mechanical properties; interception of full width of product 5m as test sample setting.
