| 1. A net member for use with a cylindrical sieve including multiple bar members of a preset length that are extended in an
axial direction, a first ring member that is provided with first lock elements fixed to or fit in respective one ends of said
bar members, a second ring member that is provided with second lock elements fixed to or fit in respective other ends of said
bar members, and a pair of holder ring members that are located between said first ring member and said second ring member
to be movable along said multiple bar members and have ring recesses, said net member comprising:
a cylindrical main net body that has ring projections attached to the outer circumference of both ends thereof, said ring
projections being constructed so as to be set in said ring recesses when said holder ring members are respectively brought
into contact with said first ring member and with said second ring member, said first lock elements and said second lock elements
work to prevent said ring projections from being slipped off said ring recesses, and said holder ring members are respectively
fastened to said first ring member and to said second ring member by means of fixation elements.
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