Inconel 625 Tube Fittings Manufacturer & Supplier in India

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Inconel 625 Tube Fittings

Kalpataru Piping Solution is a certified Inconel 625 Tube Fittings Manufacture and Inconel 625 Tube Fittings Supplier of Alloy 625 Tube Fittings (UNS N06625 / WNR 2.4856) made from a high-performance nickel-chromium-molybdenum-niobium alloy with remarkable tensile strength, outstanding corrosion resistance, high corrosion resistance at extreme temperatures and high weldability. The applications of inconel 625 fittings are commonly specified for challenging environments where reliability is paramount such as chemical processing, offshore and marine systems, aerospace and power generation.

Designed without the use of special tooling, Kalpataru’s compression fittings for Inconel 625 are precision double-ferrule fittings that ensure leak-free, vibration-resistant tube connections. Such Ferrule Fittings of INCONEL 625 possess outstanding fatigue strength and stress cracking resistance with high pressure and high temperature operation, thus ensuring the long service life and consistent performance in the operating environment. Kalpataru, as a Certified Inconel 625 Tube Fittings Exporter has stock of the same in Mumbai to dispatch in the domestic as well as international market. For the full Inconel tube fittings range, see our Inconel Tube Fittings hub or browse related Inconel 600 Tube Fittings.

All UNS N06625 Tube Fittings whether female branch tees, male elbows, union tees, connectors, reducers or any other components are traceable to heat and lot and supplied with EN 10204 3.1 Mill Test Certificates. Nickel Alloy 625 Tube Fittings have a PREN (Pitting Resistance Equivalent Number) of over 50, which is much higher than duplex stainless steel and is the material of choice for harsh (aggressive) acid service, offshore seawater applications and FGD scrubbers where even super duplex grades are not adequate.

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Table of Contents

Inconel 625 Tube Fittings Specification

Specification

Details

Material Standard

ASTM B564 / ASME SB564 (forgings); ASTM B366 / ASME SB366 (wrought fittings)

Size

1/16 inch to 1-1/2 inch (imperial); 1.5mm to 38.1mm (metric)

Thread

NPT, PT, BST, NPS, PS, BSP, BSPT, BSPP, Metric

Pressure (Inconel 625)

Up to 10,200 psi for 1/4 inch tube; up to 6,500 psi for 3/8 inch; up to 5,100 psi for 1/2 inch (see pressure ratings table)

Types

Tube to Union, Tube to Male, Tube to Female, Instrument Pipe Fittings, Accessories

Inconel 625 Tube Fittings Types

Existing product photography to be retained for each type:

  • Inconel 625 Instrumentation Tube Fittings: male connector, bulkhead male connector, male elbow, male run tee, male branch tee, 45 degree male elbow
  • Female types: female connector, bulkhead female connector, female run tee, female branch tee, female elbow
  • Union types: union, union elbow, union tee, union cross, bulkhead union, reducing union
  • Inconel 625 Tube Connectors: front ferrule, back ferrule, adapter

Size Chart of Inconel 2.4856 Hydraulic Fittings

Sorted in ascending dash size order:

Dash Size

OD (inch)

OD (mm)

-2

0.39

9.9

-4

0.52

13.2

-06

0.65

16.6

-8

0.81

20.6

-12

1.02

26.0

-16

1.28

32.5

-20

1.62

41.2

-24

1.86

47.3

-32

2.33

59.3

-40

2.82

71.5

-48

3.44

87.3

Alloy 625 Compression Fittings Sizes

Tube Fittings Types

Size OD

Size Inch

Tube to Union

6mm to 38mm

1/4 to 1-1/2

Tube to Male Fittings

6mm to 38mm

1/4 to 1-1/2

Tube to Female Fittings

6mm to 38mm

1/4 to 1-1/2

Tube to Pipe Fittings

6mm to 38mm

1/4 to 1-1/2

Tube Fittings Accessories

6mm to 38mm

1/4 to 1-1/2

Inconel 625 Tube Fitting Sizes

Inconel 625 Seamless Compression Fittings:

  • Size: 1/8 inch to 2 inch
  • Pressure Rating: 3,000 psi to 10,000 psi
  • Threads: NPT, BSPT, BSPP

Alloy 625 Welded Compression Fittings and Tube Adapters:

  • Size: 24 inch to 96 inch or custom
  • Pressure Rating: 3,000 psi to 10,000 psi
  • Threads: NPT, BSPT, BSPP

Inconel Metal Blanking Plug Metric Sizes

Metric Sizes (Inch)

Size (mm)

3/16

6 mm

5/16

10 mm

3/8

12 mm

3/4

20 mm

1

25 mm

Inconel Metal Allen Key Threads Dimensions

Thread ID (mm)

Thread ID (inch)

Size & Pitch (inch – TPI)

8.4

0.33

1/8 – 27

11.2

0.44

1/4 – 18

14.7

0.58

3/8 – 18

17.8

0.70

1/2 – 14

23.4

0.92

3/4 – 14

29.5

1.16

1 – 11-1/2

38.1

1.50

1-1/4 – 11-1/2

43.9

1.73

1-1/2 – 11-1/2

56.4

2.22

2 – 11-1/2

69.1

2.72

2-1/2 – 8

84.8

3.34

3 – 8

Threads Sizes of Inconel Metal Male Elbow

Dash Size

BSPT and BSPP Size & Pitch (inch – TPI)

-2

1/8 – 28

-4

1/4 – 19

-6

3/8 – 19

-8

1/2 – 14

-10

5/8 – 14

-12

3/4 – 14

-16

1 – 11

-20

1-1/4 – 11

-24

1-1/2 – 11

-32

2 – 11

-40

2-1/2 – 11

-48

3 – 11

Threads Dimensions of Inconel Female Connector

BSPP Male OD (in)

BSPP Male OD (mm)

BSPP Female ID (in)

BSPP Female ID (mm)

BSPT Female ID (in)

BSPT Female ID (mm)

BSPT Male OD (in)

BSPT Male OD (mm)

0.38

9.6

0.34

8.6

0.33

8.4

0.37

9.5

0.51

13.0

0.47

11.9

0.44

11.2

0.50

12.8

0.65

16.5

0.60

15.2

0.59

14.7

0.64

16.3

0.82

20.8

0.75

19.1

0.72

18.3

0.80

20.4

0.90

22.8

0.82

20.8

0.81

20.6

0.89

22.5

1.04

26.3

0.97

24.6

0.94

23.9

1.02

25.9

1.30

33.1

1.21

30.7

1.17

29.7

1.28

32.6

1.64

41.8

1.55

39.4

1.52

38.6

1.62

41.1

1.88

47.7

1.79

45.5

1.75

44.5

1.85

47.0

2.34

59.5

2.26

57.4

2.22

56.4

2.31

58.6

2.95

75.1

2.86

72.6

2.83

71.9

2.92

74.1

3.46

87.9

3.36

85.4

3.33

84.6

3.41

86.6

Thread Types of Alloy 625 Compression Tube Fittings

  • Metric Fine
  • SAE male thread with O-ring
  • British Standard Pipe Parallel (BSPP)
  • British Standard Pipe Tapered (BSPT)
  • National Pipe Thread (NPT)

Pressure Ratings of Inconel 625 Double Ferrule Fittings

End Connection Size

Up to 38 deg C (100 deg F)

At max temp 250 deg C (482 deg F)

At max temp 280 deg C (537 deg F)

6 mm

670 bar

474 bar

234 bar

10 mm

380 bar

216 bar

133 bar

12 mm

310 bar

176 bar

108 bar

1/4 inch

10,200 psi

5,814 psi

3,570 psi

3/8 inch

6,500 psi

3,705 psi

2,275 psi

1/2 inch

5,100 psi

2,907 psi

1,785 psi

Maximum Allowable Working Pressure of Inconel Material Plug

Wall Thickness (inch)

End Connection Size

Up to 100 deg F (psi)

Max temp 1000 deg F (psi)

0.049

1/4 inch

10,700

7,811

0.065

3/8 inch

9,400

6,862

0.065

1/2 inch

6,800

4,964

Inconel Alloy Union Ball Joint Temperature Range

Size

Up to 100 deg F / 38 deg C

At 200 deg F / 93 deg C

At 300 deg F / 149 deg C

6 mm

660 bar

651 bar

482 bar

10 mm

480 bar

474 bar

350 bar

12 mm

480 bar

474 bar

350 bar

Chemical Composition of Inconel 625 Tube Fittings

Alloy

Ni (%)

Cr (%)

Mo (%)

Nb+Ta (%)

Fe (%)

C max

Mn max

Si max

S max

Al max

Ti max

Inconel 625

58.0 min

20.0-23.0

8.0-10.0

3.15-4.15

5.0 max

0.10

0.50

0.50

0.015

0.40

0.40

Mechanical Properties of Inconel 625 Tube Fittings

Property

Imperial

Metric

Tensile Strength (min)

135,000 psi

930 MPa

Yield Strength 0.2% offset (min)

75,000 psi

517 MPa

Elongation (min)

42.5%

42.5%

Density

0.305 lb/in3

8.44 g/cm3

Melting Range

2360-2460 deg F

1290-1350 deg C

Physical Properties of UNS N06625 Adapter Fittings

Property

Value

Permeability

1.0006 at 200 Oersted (15.9 kA/m)

Curie Temperature

Below -196 deg C (-320 deg F)

Density

8.44 g/cm3 (0.305 lb/in3)

Melting Range

1290-1350 deg C (2360-2460 deg F)

Specific Heat

410 J/kg K (0.098 Btu/lb deg F)

Thermal Conductivity

9.8 W/m K (68 Btu/hr ft deg F) at 21 deg C

Modulus of Elasticity

207 GPa (30 x 10 to the 6 psi)

Equivalent Material of Inconel 625 Tube Fittings

Alloy

UNS

WNR

AFNOR

EN

JIS

BS

GOST

Other

Inconel 625

N06625

2.4856

NC22DNB4M

NiCr22Mo9Nb

NCF 625

NA 21

XH75MBTYU

EI602

Inconel Male Bulkhead Connector Installation

Installation Type

Fitting Type

Round head Threaded

High temp alloy female run tee

Double Ferrule 3000-6000 Psig UNF NPT BSPT

Inconel metal branch reducing tee

Single Ferrule Sleeve Type Metric thread

Inconel cross

Male to Female Round head Threaded

High temp alloy street elbow

Single Ferrule Sleeve Type Metric thread

Inconel alloy bulkhead union elbow

Double Ferrule 3000-6000 Psig UNF NPT BSPT

Inconel bulkhead union

Round head Threaded

Inconel alloy female thread elbow

Inconel 625 Tube to Male Pipe Thread

  • UNS N06625 Inconel 625 Tube to Male Elbow (45 Degree)
  • Alloy 625 UNS N06625 Tube to Male Branch Tee
  • Inconel Alloy 625 Tube to Male Connector
  • Inconel 625 UNS N06625 Tube to Bulkhead Male Connector
  • Alloy 625 Tube to Male Run Tee

Alloy 625 Tube to Female Pipe Thread

  • ASME SB564 UNS N06625 Tube to Bulkhead Female Connector
  • Inconel Alloy 625 Tube to Female Elbow
  • Inconel 625 Tube to Female Connector
  • ASTM B564 UNS N06625 Tube to Female Branch Tee
  • Inconel 625 DIN 2.4856 Tube to Female Run Tee

ASME SB564 UNS N06625 Tube Ends and Special Fittings

  • Inconel 625 Grade Cap for Tube End, Alloy 625 Tube Cap
  • ASTM B446 UNS N06625 Plug, Inconel 625 DIN 2.4856 Caps and Plugs
  • Inconel 625 Socket Weld Union, Socket Weld Elbow, Male Pipe Weld Connector
  • Alloy 625 Integral Flange Connector, Sanitary Flange, Lap Joint Flange Connector
  • Inconel 625 Hose Port Connector, Hose Male Adapter, Hose Tube Adapter

Inconel 625 Tube Fittings HS Code

Material

HS Code (Corrected)

Inconel 625 / UNS N06625 / Nickel Alloy 625 Tube Fittings

75072000 (nickel tube or pipe fittings) — confirm 8-digit HSN with your customs broker; original code 73071900 (iron/steel) is incorrect for nickel alloy products

Application of Inconel 625 Tube Fittings

  • Offshore Oil and Gas: Subsea instrumentation, wellhead control systems, and flowline connections requiring PREN above 50 where super duplex is insufficient
  • Petrochemical and Chemical: Aggressive acid service, FGD scrubbers, phosphoric acid plants, and chloride-bearing process piping
  • Semiconductor: Ultra-high purity gas and chemical delivery systems requiring contamination-free connections
  • Natural Gas Drilling: Sour gas and deep-well environments where H2S and CO2 demand resistance beyond standard austenitic grades
  • Aerospace: Aircraft and jet engine fuel and hydraulic systems at elevated temperatures and vibration levels
  • Subsea Exploration: Umbilical systems, ROV hydraulic lines, and seawater injection instrumentation
  • Nuclear: Reactor coolant instrumentation and steam generator connections where stress corrosion cracking resistance is mandatory

Inconel 625 Tube Fittings Price List

Product Type

Approximate Price (USD)

Alloy 625 Instrumentation Fittings

$5 to $30 per piece

DIN 2.4856 Double Ferrule Connectors

$5 to $35 per piece

Inconel 625 Compression Type Fittings

$5 to $30 per piece

Standard Inconel 625 Tube Fittings

$3 to $250 per piece

Nickel Alloy 625 Tube-to-Union Fittings

$15 to $250 per piece

UNS N06625 Bulkhead Unions

$3 to $200 per piece

Inconel 625 Male Elbow Connectors

$5 to $30 per piece

Alloy 625 Instrumentation Tube Connectors

$5 to $35 per piece

UNS N06625 Hydraulic Tube Fittings

$5 to $30 per piece

Export Markets

Kalpataru Piping Solution is a trusted Inconel 625 Tube Fittings Exporter shipping to clients across the Middle East, Europe, Southeast Asia, Africa, and the Americas. For a quote, contact our export team.

Other Available Stock of Inconel Alloy 625 Instrumentation Tube Fittings
  • Inconel 625 Swagelok instrumentation Fittings
  • ASTM B564 Alloy 625 Nickel Reducing Union Tee
  • DIN 2.4856 45 Degree Positionable Male Elbow
  • ASTM B366 Inconel® Alloy 625 Ferrule Nut
  • Inconel 625 Positionable Male Run Tee
  • Inconel Alloy JIS NCF 625 Hex Plug
  • ASME SB366 Inconel 625 Tube End Closure
  • Inconel 625 Fitting End Closure
  • Inconel 625 Parker Compression Fittings
  • Inconel 625 Bulkhead Reducing Union
  • Inconel 625 Hydraulic Fittings in India
  • Inconel 625 Single Ferrule Compression Fitting
  • Inconel Alloy 625 Ferrule Fitting Manufacturer
  • Alloy 625 Tube to Female Pipe Thread
  • Inconel 625 Tube to Male Pipe Thread
  • Inconel 625 Positionable Male Elbow
  • Inconel 625 Hex Nipple Supplier
  • Inconel® 625 Hex Bushing Exporter
  • SB564 Inconel 625 Male Adapter
  • Inconel 625 Female Adapter
  • Inconel 625 Allen Key Plug
  • Inconel 625 Instrumentation Pipe Fittings
  • Inconel UNS N06625 Tube Cap Fittings
  • Inconel 625 Tylok Instrumentation Fittings
  • Inconel Alloy 625 Union Joint Ball
  • Inconel 625 Two Ferrule Compression Fitting
  • Inconel 625 Ferrule Tube Fittings Suppliers
  • Inconel 625 High Pressure Hydraulic Tube Fittings
  • Inconel 625 Tube Fitting sizes
  • UNS N06625 Tube to Male Branch Tee

FAQ's About Inconel 625 Tube Fittings

Pressure ratings vary by size and design. For 1/4 inch tube at ambient temperature, ratings reach up to 10,200 psi. At 537 degrees Celsius (1000 degrees Fahrenheit), the 1/4 inch connection retains 3,570 psi rating under ASME B31.3. See the full pressure-temperature table above for all sizes and temperatures.

Widely used in offshore oil and gas, petrochemical plants, semiconductor manufacture, desalination units, aerospace components, nuclear facilities, and chemical processing systems.

Yes, fittings can be customized in size (1/16 inch to 1-1/2 inch standard; larger on request), thread type, wall thickness, and configuration based on project requirements.

Absolutely. Inconel 625 achieves a PREN (Pitting Resistance Equivalent Number) exceeding 50, significantly higher than duplex stainless (PREN 34 to 40) and super duplex (PREN 40 to 45). This makes it the preferred choice where even super duplex grades are insufficient, including seawater, FGD scrubbers, and concentrated acid service.

Inconel 600 (UNS N06600) is a nickel-chromium-iron alloy optimised for high-temperature oxidation resistance and caustic service. Inconel 625 (UNS N06625) adds molybdenum (8 to 10 percent) and niobium+tantalum (3.15 to 4.15 percent), giving it dramatically better pitting, crevice corrosion, and stress corrosion cracking resistance. Inconel 625 is preferred for offshore, sour gas, and acid service; Inconel 600 is the choice for high-temperature furnace and nuclear applications.

The standard welding filler for Inconel 625 is AWS ERNiCrMo-3 (Alloy 625 wire), which provides matching composition and corrosion resistance in welded joints. Minimum interpass temperature should be maintained below 177 degrees Celsius to avoid carbide precipitation and loss of corrosion resistance.

Standard supply includes EN 10204 3.1 Mill Test Certificates with full chemical analysis, mechanical testing, and heat traceability. NACE MR0175/ISO 15156 and NACE MR0103 compliance certificates are available on request. EN 10204 3.2 witnessed inspection can be arranged via TUV, Bureau Veritas, Lloyds, or SGS.

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