Three-way connectors can be used in various industries, and can be categorized into several types accordingly:

1. Carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, aramid, PPC, and more, categorized by material.

2. Divided by manufacturing methods, it can be categorized into topping, pressing, forging, casting, and more.

3. Divided by manufacturing standards, it can be categorized into national standards, electrical standards, water standards, American standards, German standards, Japanese standards, Russian standards, and so on.