Question

suggest two method to prevent rusting​

Answer 1

Use an Alloy. Many outdoor structures, like this bridge, are made from COR-TEN steel to reduce the effects of rust.

Apply Oil.

Apply a Dry Coating.

Paint the Metal.

Store Properly.

Galvanize.

Blueing.

Powder Coating.

Answer 2

Answer:

1. Paint it - Paint the metal with any durable acrylic paint.
2. Keep moisture at Bay - Avoid contact with water or moisture.