1. At present, there are few pre-welding treatments for steel plates, and all of them are sandblasted before or after use. Although this is a helpless move, it is a relatively easy method to operate.

2. If some steel plates are operated indoors, antirust liquid can be used for protection; If you are outdoors, you can use peeling protective coating, which is widely used to protect ships at present.

3. In addition, for the inner cavity of a ship, a lot of antirust powder is currently used.

If in doubt, please look at the pictures or consult the information.