Engineering domin replenishment, samfurin gami karfe bututu A333 GR6, ƙayyadaddun ne 168.3 * 7.11, da kuma carbon karfe bututu GB/T9948, 20 #, ƙayyadaddun ne 114.3 * 6.02, da dai sauransu Mai zuwa ya gabatar da ka'idoji da kayan aikin injiniya umarni zai haɗu da: 20 # GB8163...
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