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Threaded/Screwed Flanges

Threaded/screwed flanges have a centrally drilled and tapped hole in a variety of thread forms. They are then screwed on to a screwed pipe or fitting – they do not have to be welded to secure them in place. For higher pressure applications, they are sometimes welded to seal and secure them.

Threaded flanges are not suited to applications where heating or stresses are present, as leakage through the threads is possible.


We also supply and stock:

  • Billets cut from round bar
  • BSP/NPT/SW Fittings
  • ASME SA269/249/270/A213 tubes

Materials include:

Stainless steels Duplex Nickel alloys Carbon steels Low alloys
316/L F51/S31803 200 A105 F5
316/H F51/S31803 400 A350 LF2 F9
316/Ti F53/S32750 K500 F11
304/L F55/S32760 600 F22
304/H 625
321 718
347 800/H
310 825
317/L Nimonic