Brass kadai with kalai" in English can be expressed as:
Tin-lined brass wok (most accurate if the shape is like a kadai)
Tin-lined brass kadai (keeps the Indian term "kadai," which is widely understood)
Brass cooking pot with a tin lining (more descriptive)
Tinned brass cooking pan (also correct)
Explanation:
Brass = the metal alloy (copper + zinc)
Kadai = a deep, round Indian cooking pan (similar to a wok)
Kalai = a tin lining (tin coating) applied to the inside of brass or copper cookware to make it safe for cooking acidic foods.