A.90° B.13° C.18°
单项选择题羊角吊卡的锥度(以31 2 EUE油管为例)()
A.18° B.13° C.90°
单项选择题31 2 EUE油管(N80,9.3 lb ft )最佳上扣扭矩值()
A.2400 ft.lb B.3200 ft.lb C.4000 ft.lb
单项选择题31 2 EUE油管(J55,9.3 lb ft)最佳上扣扭矩值()
A.2850 ft.lb B.1710 ft.lb C.2880 ft.lb
单项选择题27 8 EUE油管(N80,6.5 lb ft)最佳上扣扭矩值()
A.1730 ft.lb B.2300 ft.lb C.2880 ft.lb
单项选择题27 8 EUE油管(J55,6.5 lb ft)最佳上扣扭矩值()
A.1650 ft.lb B.1240 ft.lb C.2060 ft.lb