SS 321 Couplings

SS 321 Couplings are small, cylindrical pipe fittings used to connect pipe runs of the same size or to connect a pipe to a component like a valve or nipple. They are commonly available as Full Couplings (threaded or socket-weld on both ends) and Half Couplings (one end socket-weld or threaded, the other end welded to a vessel or run pipe). These couplings are forged from Stainless Steel Grade 321, a high-performance austenitic alloy stabilized with Titanium. The Titanium prevents the formation of chromium carbides, ensuring the coupling maintains its full resistance to intergranular corrosion after welding or during continuous exposure to high temperatures (up to 850°C). Zeron Fasteners manufactures and supplies robust, high-pressure SS 321 Couplings (often conforming to ASME B16.11) that are essential for creating secure, leak-tight joints in critical high-heat and corrosive systems, including boiler lines, steam systems, and chemical processing instrumentation.

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