DIN 15 Long Weld-End Union Male Part

DIN 15 Threaded Male-End Geometry

The DIN 15 welded male part forms the externally threaded half of a DIN 11851 pipe union. It integrates an extended cylindrical butt-weld neck at the tube side with an external knuckle-thread body and a recessed front groove that seats the union sealing ring against a mating DIN 14 or DIN 14B liner.

Stainless Steel Grades and Surface Finish

Offered in SS304 (AISI 304) and SS316L (AISI 316L) stainless steel, the component is specified with an internal surface roughness of Ra < 0.8 μm. Welding the long neck directly to matching stainless steel tubing provides a rigid threaded anchor point for detachable union joints.

Dimensional Reference and Range Scope

While the header and body text tables specify DN15 to DN150, the embedded DIN 11851 Welding male DIN-15 dimensional chart lists rows from DN10 through DN150. This listing covers the standalone DIN 15 male end only; the mating DIN 13R slotted round nut, DIN 14 liner, and seal ring are ordered separately.

Process Applications and Selection Notes

Widely applied in brewing, beverage, dairy, juice, food, and pharmaceutical process lines, the demountable nut connection simplifies routine line disassembly and seal maintenance. Buyers should confirm the required weld-neck series (long DIN 15 vs. short male) and match thread and tube dimensions to the mating union parts.