Gb578/5784 4.8/8.8/10.9 grade national standard flange M5*10-50, M6*8-80, M8*10-200, M10*10-100
M12*20-200 M14*20-200 M16*20-200 M18*25-200




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Gb578/5784 4.8/8.8/10.9 grade national standard flange M5*10-50, M6*8-80, M8*10-200, M10*10-100
M12*20-200 M14*20-200 M16*20-200 M18*25-200



