The ANSI flange joint end connector consists of a stainless hub end factory ... in accordance with API RP 17B on flexible steel pipes and end fittings have characterized and further qualified ...

just use SharkBite Push-to-Connect Couplings to add on to your existing pipes. In these cases, it’s much more cost-effective to use the brand’s barbed fittings and stainless-steel strap clamps.