The Merit Brass welding spud flange is a class 150 stainless steel 304 cast pipe fitting with female National Pipe Taper (NPT) threads used to join two sections of a piping system. It has female NPT threads for connecting...

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The Merit Brass welding spud flange is a class 150 stainless steel 304 cast pipe fitting with female National Pipe Taper (NPT) threads used to join two sections of a piping system. It has female NPT threads for connecting to male pipes and the flange is welded instead of bolted for a stronger seal. Made of stainless steel 304, the lower carbon content of this fitting ensures higher corrosion resistance than 302 grade steel. This class 150 fitting meets steel 304 strength standards and specifications ISO 49 and ANSI 1.20.1 for quality assurance. Class is a standard relating to tolerance, construction, dimension, and wall thickness, but it is not a direct measurement of maximum working pressure.

Pipe fittings are components used for connecting, terminating, controlling flow, and changing the direction of piping in many different industries. When purchasing pipe fittings, consider the application, as this will affect material type, shape, size and required durability. Fittings are available threaded or unthreaded, in many shapes, styles, sizes, and schedules (pipe wall thickness).

Merit Brass manufactures pipe nipples following ISO 9001 standards for quality assurance. The company, family-owned since 1937 and headquartered in Cleveland, OH, distributes pipe fittings in the United States and Canada.



  • Welding spud flange for joining two sections of a piping system
  • Female National Pipe Taper (NPT) threads for use with male threaded pipes
  • Made of stainless steel 304 for strength
  • Low carbon content to ensure greater resistance to corrosion
  • Meets specifications ASTM A182 and ASME SA182 for quality assurance

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