SMI Hammer Unions

SMI offers API certificates for Flow line equipment such as API 6A, 6D, 16C and we are also ISO 9001, 14001 certified company. Our products are fully interchangeable with global major brand of Flow line equipment.

Hammer Unions

  • SMI Hammer unions are manufactured by steel forgings using appropriate materials to specific pressure ratings.
  • SMI Hammer unions are available in a choice of end connections. API line pipe threads are standard.
  • Butt Weld End is available. Customer needs to specify schedule of pipe while ordering.
  • H2S service is available and all H2S service parts of SMI unions conform to the latest NACE specifications.
  • All SMI Hammer union components can be interchangeble with WECO on the same size and figure.
  • All SMI Hammer union nuts have three hammer lugs.
  • SMI Hammer unions for low-pressure services (Fig 100 Fig 200) feature a primary metal-to-metal seal.
  • This metal-to-metal seal remains leak-proof even one surface is slightly pitted or misaligned.
  • SMI Hammer unions for Medium-pressure services (Fig 400 Fig 600) is designed supplement the metal-to-metal seal with a resilient O-ring in the male sub. The replaceable O-ring extends useful life for union and protects the metal-to-metal seal against corrosion.