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针规塞规量棒29.8 29.81 29.82 29.83 29.84 29.85 29.86 29.88
硬质钨钢合金球29.835/29.84/29.845/29.85/29.855mm扩孔挤孔钢球
针规塞规29.81/29.82/29.83/29.84/29.85/29.86/29.87/29.88/.89
针规高精度塞规29.84 29.85 29.86 29.87 29.88 29.89 29.9mm
针规塞规量棒29.8 2k9.81 29.82 29.83 29.84 29.85 29.86 29.88
O型圈 美标AS-566 28.25/29.84/31.42/32.99/34.6/36.17*2.62
YG6钨钢球硬质合金球29.83/29.835/29.84/29.845mm扩孔挤孔钢珠
