Cast Iron is the premier piping material for sanitary and storm drain, waste, and vent applications. No-Hub pipe and fittings are non-pressure applications where temperatures will not exceed 212 deg F. No-Hub pipe and fittings are joined using a shielded hubless coupling. They have high crush strength and are noncombustible. They are known for their superior sound deadening qualities as well as their ease of installation. Charlotte Pipe products are manufactured in the USA.