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I've spent years helping engineers spec out piping for tough environments, and one thing is clear: when seawater or harsh chemicals are involved, you can't afford weak links. Copper Nickel alloy butt welded fittings (often called Cu-Ni butt weld fittings) combine about 90% copper with 10% nickel (90/10) or 70% copper with 30% nickel (70/30), plus iron and manganese for added toughness. These fittings create strong, seamless welded joints that resist corrosion like nothing else. At FEITING, we manufacture marine grade copper nickel welded fittings and high durability copper nickel pipe fittings that meet ASME B16.9, EEMUA 234, and other standards. Our clients in shipbuilding, offshore platforms, and desalination plants choose seawater resistant pipe fittings copper nickel because they last decades with minimal maintenance.

I've dealt with piping systems in marine and offshore setups for years, and one thing always stands out: the wrong fittings can turn a solid project into a nightmare of leaks and downtime. Enter copper nickel alloy butt welded fittings—these guys blend 90% copper with 10% nickel, plus a dash of iron and manganese for extra toughness. They create seamless, welded joints that handle high pressures and corrosive environments without breaking a sweat. At Feiting Pipe, we craft these marine grade copper nickel welded fittings from alloys like C70600 (90/10) and C71500 (70/30), meeting tough standards like ASME B16.9 and EEMUA 234. Folks in shipbuilding, desalination, and oil platforms swear by them for their top-notch seawater resistance and biofouling defense.