aking PP short-fiber as raw material, short-fiber pinprick geo-cloth is manufactured with carding cross-laying equipment and prickling equipment. Functions: mainly applied in water conservancy, road and railway for strengthening, separation, reversed filter and drainage of projects Testing index g/sqm 400 450 500 600 800 Note Quality error in unit area% -7 -7 -6 -6 -6 　　　 Thickness .mm.≥ 3.0 3.3 3.6 4.1 5.0 　 Error of width.% -0.5 Breaking strength，KN/m≥ 12.5 14.0 16.0 19.0 25.0 Length and width Elongation at break≤(%) 25-100 CBR bursting strength KN≥ 2.1 2.4 2.7 3.2 4.0 　 Effective aperture090（095）mm 0.07-0.2 　 Vertical permeability coefficient cm/s Kx(10-4-10-3) K＝1.0-9.9 Tearing strengthKN≥ 0.33 0.38 0.42 0.46 0.60 Length and width