规格节线长齿数规格节线长齿数Std4.5M-180180.0040Std4.5M-437437.0097Std4.5M-198198.0044Std4.5M-441441.0098Std4.5M-203203.0045Std4.5M-450450.00100Std4.5M-225225.0050Std4.5M-468468.00104Std4.5M-252252.0056Std4.5M-486486.00108Std4.5M-275275.0061Std4.5M-500500.00111Std4.5M-279279.0062Std4.5M-504504.00112Std4.5M-284284.0063Std4.5M-518518.00115Std4.5M-297297.0066Std4.5M-558558.00124Std4.5M-315315.0070Std4.5M-563563.00125Std4.5M-329329.0073Std4.5M-567567.00126Std4.5M-333333.0074Std4.5M-6126