This flashtube is only for Quantum Q series flash heads. The correct bare bulb flashtube for the Godox AD200 is the Godox Flash Tube for AD200 Pocket Flash, BH # GOFT200. https://bhpho.to/36tpWfU

You would use the UV coated QF30UV bulb if the assignment is to photograph a bride in her white wedding dress. The UV bulb will produce a warmer temperature light resulting in a more natural white colour of her dress rather than adding a blue tint to it. Therefore, less colour correction in post processing if you want her dress to be white.