15-25 minutes. If you are steaming sea crabs in a pot under boiling water, steam crabs under 5 taels for about 15 minutes, those weighing 5 to 6 taels for about 17 minutes, and those weighing more than 6 taels for about 20 minutes. The time increases by 2 minutes for every 1-two-two increase in crab weight.

Sea crabs can not eat how to save: 1, cooked sea crabs: cooked sea crabs, directly with plastic wrap or plastic bags, when such as the freezer layer of the refrigerator can be. If you do not add other seasonings, generally can be put about a month, but if you add other seasonings, try to eat it in 2-3 days time.

2. Raw sea crabs: Raw sea crabs can be washed or cut into two pieces, packed in a plastic bag, and stored in the freezer at a lower temperature. This will generally keep for a day and a half. If you want to keep it longer, steam it and put it in the freezer.