Net top chains are divided
in to three by type of pitch,
shape chain 5900 and 4800 and 800 and 900 and 400series.
They classed three types by shape and width of chain plate.
closed surface is normally used most product, but open
area is especially used for vegetable and meat which have
impurity when they are transporting.
Net top chain can produced any size of width, using square
shaft give exact transmission.