it should retain atleast 10% in particluar sieve
The different types of lumber sizes available for purchase include nominal sizes, actual sizes, and standard sizes. Nominal sizes are the common names for lumber sizes, while actual sizes are the true dimensions of the lumber. Standard sizes are specific dimensions used for certain types of lumber.
NB (nominal bore) is the European designation equivalent to NPS is DN (diamètre nominal/nominal diameter/Durchmesser nach Norm), in which sizes are measured in millimeters. NB (nominal bore) is also frequently used interchangeably with NPS.You can refer more details herehttp://www.piping-engineering.com/nominal-pipe-size-nps-nominal-bore-nb-outside-diameter-od.html
The conversion factor to convert inches to "Nominal Bore" (NB) is 25.4 mm per inch. NB sizes are based on the internal diameter of a pipe, and they do not directly correlate to inches.
Nominal.
nominal
A 250 NP pipe is a pipe that is 250 millimeters in diameter and is 10 inches long. It comes in a variety of thicknesses. NB stands for nominal bore. Sometimes this is referred to as NPS which stands for nominal pipe size. NB is a standard for pipe sizes in North America.
nominal
They are nominal.
Nominal
i had to pay Nominal fees. Nominal charges might apply on your purchase.
The advantage of using a nominal scale is that it can help with classification. The disadvantage of using a nominal scale is that it is the most primitive system.
nominal