What is Threaded Pipe Fitting

- Threaded fittings are used in non critical applications and when service fluid is at ambient temperatures such was instrument air, plant air, cooling water, potable water etc. As they do not require welding, they are used at places where welding is not permitted. Though ASME B16.11 provides dimensions for 1/8″ to 4″ size threaded fittings, normally in process plant, 1/2″ to 1-1/2″ fittings are used.

Standards of Threaded Pipe Fittings

- Material of Threaded Fitting

+ Stainless Steel Threaded Fitting: ASTM A182 F304, F304L, F306, F316L, F304H, F309S, F309H, F310S, F310H, F316TI, F316H, F316LN, F317, F317L, F321, F321H, F11, F22, F91, F347, F347H, F904L / ASTM A312/A403 TP304, TP304L, TP316, TP316L

+ Carbon Steel Threaded Fitting :: ASTM A105, A350 LF2, A106 Gr.B, A234 WPB

+ Bronze/Brass Threaded Fittings

+ Ductile Iron Threaded Fittings

- Dimension : ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799

- Pressure range: 2000LBS, 3000LBS, 6000LBS

- Size : 1/8"~4" (DN6~DN100)

- ASME B16.11 Forged fittings,Socket-Welding and Threaded

- MSS-SP-97 Integrally Reinforced Forged Branch Outlet Fittings Socket Welding, Threaded, and Buttwelding Ends

- MSS SP-79 Socket Welding Reducer Inserts ­

- MSS SP-83 Class 3000 Steel Pipe Unions Socket Welding and Threaded

- MSS SP-95 Swaged Nipples and Bull Plugs

- MSS SP-25 Standard Marking Systems for Valves, Fittings, Flanges and Unions

- ASME B1.20.1 Pipe Threads, General Purpose (Inch)

- ASTM A105 Carbon Steel Forgings for Piping Applications

- ASTM A181Carbon Steel Forgings, for General-Purpose Piping

- ASTM A182Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service

- ASTM A350 Carbon and Low-Alloy Steel Forgings, Requiring Notch Toughness Testing for Piping Components

- ASTM A694Carbon and Alloy Steel Forgings for Pipe Flanges, Fittings, Valves, and Parts for High-Pressure

- ASTM A961 Common Requirements for Steel Flanges, Forged Fittings, Valves, and Parts for Piping Applications

- GB/T 14383 Forged fittings,Socket-Welding and Threaded

- GB/T 19326Forged Branch Outlet Fittings Socket Welding, Threaded, and Buttwelding

- HG/T 21632Forged Branch Outlet Fittings Socket Welding, Threaded, and Buttwelding

- HG/T 21634Forged Socket Welding Pipe Fittings,

- SH 3410 Forged Steel Socket-Welding Fittings

Types of Threaded Pipe Fittings by Materials

Copper Threaded Fittings (Bronze Threaded Fittings, Brass Threaded Fittings), Forged Steel Threaded Fittings, Stainless Steel Threaded Fittings, Ductile Iron Threaded Fittings

• Bronze/Brass Threaded Fittings

• Forged Steel Threaded Fittings

• Stainless Steel Threaded Fittings

• Ductile Iron Threaded Fittings

Different Type of Threaded Fittings

• Threaded Close Nipple

OD is as per standard pipe dimensions. Length is as per project requirement. Made from standard pipe piece.

Threaded Close Nipple

• POE TOE Nipple

Used to connect socket weld small bore piping to threaded small bore piping. OD is as per standard pipe dimensions. Length is as per project requirement.

POE TOE Nipple

• Threaded Pipe to Tube Connector

Typical use is to connect instrumentation tubes to Air Pipes. Also used for Analyser Tubing.

Threaded Pipe to Tube Connector

• Threaded Reducing Insert

These fittings are used to connect two female threaded fittings of different sizes to each other.

Threaded Reducing Insert

• Threaded Flush Bushing

Threaded Flush Bushing : Used to connect reduced size pipe to larger size female threaded fitting. Available size range is from 1/8″ to 4″ as per ASME B16.11.

Threaded Flush Bushing

Advantages of Threaded Fittings

- Threaded joints can be easily made from pipe and fittings on site.

- They minimize fire hazard when installing in areas where flammable gases and liquids are present.

Disadvantages of Threaded Fittings

- Use of threaded joints is not permitted by ANSI B31.1 if sever erosion, crevice corrosion, shock or vibration is anticipated, nor at temperatures over 925 F.

- Chances of leakage are high with threaded joints.

- Seal welding may be required in more risky situations.

- For threaded joints, strength of pipe is reduced as forming the screw thread reduces the wall thickness.

Stainless Steel Threaded Fittings

- We are supplier of Stainless Steel Threaded Fittings, Welcome to buy from VINDEC.Our Pipe Fitting, Cast Pipe Fittings, 150lbs, Thread Fittings, Screw Fittings, Cast fitting, Stainless Fittings, Hose fittings, Plumbing Fittings, Camlock Couplings.

The sizes of our Pipe fittings, Cast Pipe Fitting, 150lbs Thread Fittings, Screw fitting are available from 1/8" to 4", in Grade CF8M (SS316), CF8 (SS304), DIN 1.4408, DIN 1.4308 stainless steel ASTM A351.

- The threads of our Pipe Fittings, 150lbs are available for NPT - ANSI B1.20.1, PT - BS 21, DIN - DIN 2999, ISO 228/1, ISO 7/1

- The Dimension of our Pipe Fittings, 150lbs conform to ISO 4144, SP 114, EN-10241, JIS.

- Stainless Steel Threaded Fittings  are used in water supply pipelines and in various other fluid transfer piping systems.

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Standards of Stainless Steel Threaded Fittings

- Material : Stainless Steel ASTM A351 CF8 (304) & CF8M (316)

- Dimension : ANSI B16.3

- End Type : BSPT, NPT, BSP, DIN 2999 Thread

- Pressure : 150LBS

- Size  : 1/8" ~ 4"

Different Type of Stainless Steel Threaded Fittings

Include 90 Elbow, 45 Elbow, 90 Reducing Elbow, 90 Street Elbow, Tee, Reducing Tee, Union Conical F/F, Union Conical M/F, Union Conical M/M, Union Conical W/W, Union Conical W/F, Union Conical W/M, Union Conical Socket Weld, Union Flat F/F, Union Flat M/F, Union Flat M/M, Union Flat W/W, Union Flat W/F, Union Flat W/M, Hex. Plug, Square Plug, Round Cap, Hex. Cap, Cross, Hex. Nipple, Barrel Nipple, Welding Nipple, Pipe Nipple, Reducing Hex. Nipple, Hose Nipple, Hex. Bushing, Coupling Banded, Coupling OD Machined, Pipe Couplings, Hose Couplings, Stainless Coupling, Half Coupling Machined, Lock Nut, Pipe Connectors, Female Adapter, Male Coupler, Hose Shank Coupler, Female Coupler, Dust Cap, Dust Plug, Hose Shank Adapter, Male Adapter.

• Stainless Steel 45° Elbow Threaded End

• Stainless Steel 90° Elbow Threaded End

• Stainless Steel 90° Reducing Elbow Threaded End

• Stainless Steel 90° Street Elbow Threaded End

• Stainless Steel Equal Tee Threaded End

• Stainless Steel Reducing Tee Threaded End

Stainless Steel Union Conical(Flat) F/F Threaded End

Stainless Steel Union Conical(Flat) M/F Threaded End

Stainless Steel Union Conical(Flat) M/M Threaded End

Stainless Steel Union Conical(Flat) M/M Threaded End

Stainless Steel Union Conical(Flat) W/F Threaded End

Stainless Steel Union Conical(Flat) W/M Threaded End

Stainless Steel Hex. Plug Threaded End

Stainless Steel Square Plug Threaded End

Stainless Steel Round Cap Threaded End

Stainless Steel Hex. Cap Threaded End

Stainless Steel Equal Cross Threaded End

Stainless Steel Hex. Nipple Threaded End

Stainless Steel Barrel Nipple Threaded End

Stainless Steel Welding Nipple Threaded End

Stainless Steel Welding Nipple Threaded End

Stainless Steel Red. Hex. Nipple Threaded End

Stainless Steel Hose Nipple Threaded End

Stainless Steel Close Nipple Threaded End

Stainless Steel Fully Threaded Nipple Threaded End

Stainless Steel Hex. Bushing Threaded End

Stainless Steel Coupling Banded Threaded End

Stainless Steel Reducing Coupling Threaded End

Stainless Steel Coupling OD Machined Threaded End

Stainless Steel Half Coupling Machined Threaded End

Stainless Steel Bend 90 Threaded End