our factory are specialized in water heater caps for more than 6 years, we have skilled workers, standard workshop and advance material : cold rolled steeldiameter: 400mmthickness: 0.5mmdepth : 5mm"V" bend beadingwith 3 holes: big hole in 13.5mm dia, two smal holes in 2.5mm diaprice: 1.2usd fob shanghai electric water heater cap