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Threaded Fittings

Threaded Fittings

threaded fittings kaysuns
Threaded Fittings is screw connected steel pipe fittings, it is a kind of high pressure forged fittings. Kaysuns provide threaded fittings with NPT, ISO, BSP pipe thread in stainless steel, duplex steel, alloy steel etc.

Introduction of Pipe Thread:

There are currently three types of pipe thread for piping works:

  1. Tooth profile angle is 55°, taper 1: 16, internal thread type: Rp, Rc, outer thread is R. The thread of Rp-R is widely used in construction engineering.
  2. ISO228 is non-threaded sealed pipe thread. It’s parallel for the internal and outer thread. The tooth profile angle is 55°.
  3. ANSI 1.20.1 is thread sealed pipe thread. The tooth profile angel is 60°, internal and outer thread are taper 1:16. It is used widely in high pressure fittings and high temperature fittings. Threaded fittings in ASME B16.11 is NPT thread.

Products of Threaded Fittings:

Elbow(90°,45°), Tee, Full coupling, Half coupling, Boss, Reducing coupling, Cap, Hexagon head male plug, Hexagon busing, Reducing Hexagon nipple, Hexagon nipple, Hexagonal nut, Nipple, Union, Street 90°elbow, 180°Returns elbow etc.

Manufacture Standards:

ANSI B16.11, BS3799, JIS B2302, GB14626, MSS SP-83 etc.

Dimension Range of Threaded Fittings:

1/2″to 4″(DN15 ~DN100)

Rate of Threaded Fittings:


Materials of Threaded Fittings:

  • Stainless Steel: ASTM A182 F304, F304L, F304/304L, F316, F316L, F316/FP316L, F317L, F321, F321H, F347, F347H ,F51(Duplex Steel) , B N08904etc.
  • Alloy Material: Monel 400,Inconel 600,Incoloy 800/H,Alloy 20,Hastelloy C276,C22,B2, Cu70Ni30,Cu90Ni10,Titanium etc.
  • Carbon Steel: ASTM A105, ASTM A182 F11, F12, F22, F5, F91, A350 LF2,LF3, A694 F42, F46, F48, F50, F52.

SO&Threaded Fittings Catalog

*For more information about threaded fittings, please contact us.


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