Inconel 625 Tube Manufacturer in India

Trusted Inconel 625 tube supplier of ASTM B444 seamless and ASTM B704 welded UNS N06625 tubes for aerospace, marine, chemical and oil and gas service — certified, tested and delivered worldwide.

High Resistance to Corrosion and High Temperature Inconel 625 Tubes

Established in the year 2006, Eramets Steel Alloys Pvt. Ltd. is a top name in the manufacturing and supplying of seamless and welded ASTM B704 UNS N06625 Inconel 625 tubes from India. Using the latest technology, we make our seamless tubes using the process of an arc furnace. The tubes are supplied in straight lengths and U bends. Coils are also supplied as per customer requirement. As per customer drawings, we manufacture tubes.

Inconel 625 being a strong Nickel base alloy, shows great resistance to corrosion, heat and high temperatures. We issue a Mill Test Certificate (MTC) for each batch of tubes supplied. Thus, customers can have complete traceability of tubes for critical applications.

Trusted Supplier of Inconel 625 Tubes

We have well established business relationships with various EPC contractors, OEM’s, Heat exchanger fabricators, Instrumentation & Offshore Engineering Companies from India and other countries.

We assure the same quality and same documentation for small quantity tubes for Instrumentation and large quantity tubes for a project.

Before shipping the tubes are bent to U shape (if required), cut to length (if required) and/or end finished (if required) and then packaged.

Why is Inconel 625 so Special?

Being a Ni based alloy with Mo and Nb gives Inconel 625 special properties. Some of the properties include great strength, high temperature resistance and corrosion resistance. Also, Inconel 625 has good properties over a wide range including strength and properties at elevated and cryogenic temperatures.

High Strength – Exceptionally high levels of tensile strength, resistance to creep and fatigue across the entire temperature spectrum.

Pitting & Crevice Corrosion Resistance – Increased corrosion resistance to chlorides is provided by the presence of molybdenum.

Stress Corrosion Cracking Resistance – Resistant to stress corrosion cracking by chloride environments, where stainless steel tubes may stress corrosion crack.

Oxidation & Heat Resistance – Exceptional strength at elevated temperatures, and resists scaling.

Weldability – Easily welded and formed, retains corrosion resistance.

Seamless and Welded Inconel 625 Tubes

Seamless tubes

B444 and SB444 provide the chemistry and mechanical and chemical properties of seamless tubes, respectively. Seamless tubes are drawn or pilgered from a solid hollow stock and thus have no weld seams. They are used in several industries including aerospace, hydraulic systems, and heat exchangers, to name a few.

Welded Tubes

Chemistry and mechanical properties of welded tubes are given in SB704. Resistance welding of strips of stainless steel is used to fabricate B704 tubes without a filler metal. Following cold working and annealing, they are employed in several heat exchangers and condensers.

Inconel 625 Grades 1 and 2

SB444 defines the two grades as Inconel 625 Grades 1 and 2, respectively. Grade 1 has higher strength and is employed for services below 593°C (1100°F). Grade 2 has better properties at elevated temperatures and is employed for services above 593°C. What is your design temperature?

Inconel 625 Tube Specifications

ParameterSpecification
StandardsASTM B444 / ASME SB444 (seamless), ASTM B704 / ASME SB704 (welded tube), ASTM B705 / ASME SB705 (welded pipe)
General requirementsASTM B829 (seamless), ASTM B751 (welded)
GradeInconel 625 / Alloy 625, UNS N06625, W.Nr. 2.4856
Outside diameter[6.35 mm to 219 mm — confirm]
Wall thickness[0.5 mm to 12 mm — confirm]
LengthUp to [12 metres — confirm], random, fixed or cut lengths
TypeSeamless, welded, U-bend, coiled, capillary [confirm]
ConditionGrade 1 (annealed), Grade 2 (solution annealed)
FinishAnnealed and pickled, bright annealed, polished
EndsPlain end, bevelled end
DocumentsMill Test Certificate EN 10204 3.1 / 3.2, third-party inspection on request

Inconel 625 Chemical Composition (ASTM B444)

Element Weight %
Nickel (Ni) 58.0 min
Chromium (Cr) 20.0 – 23.0
Molybdenum (Mo) 8.0 – 10.0
Niobium + Tantalum (Nb + Ta) 3.15 – 4.15
Iron (Fe) 5.0 max
Cobalt (Co) 1.0 max
Carbon (C) 0.10 max
Manganese (Mn) 0.50 max
Silicon (Si) 0.50 max
Aluminium (Al) 0.40 max
Titanium (Ti) 0.40 max
Phosphorus (P) 0.015 max
Sulphur (S) 0.015 max

Mechanical and Physical Properties

Property Grade 1 (annealed) Grade 2 (solution annealed)
Tensile strength (min) 827 MPa (120 ksi) 690 MPa (100 ksi)
Yield strength 0.2% offset (min) 414 MPa (60 ksi) 276 MPa (40 ksi)
Elongation (min) 30% 30%
Density 8.44 g/cm³ 8.44 g/cm³
Melting range 1290 – 1350 °C 1290 – 1350 °C

Inconel 625 Equivalent Grades

Standard Designation
UNS N06625
Werkstoff Nr. 2.4856
EN NiCr22Mo9Nb
JIS NCF 625
BS NA 21
AFNOR NC22DNB4M

Inconel 625 Tube Weight Chart

OD (mm) Wall thickness (mm) Weight (kg/m)
6.35 0.89 0.129
9.53 0.89 0.204
12.70 1.24 0.377
15.88 1.24 0.481
19.05 1.65 0.761
25.40 1.65 1.038
25.40 2.11 1.302
31.75 2.11 1.657
38.10 2.77 2.593
50.80 3.05 3.859

Weights are calculated for Inconel 625 (density 8.44 g/cm³) using the formula: Weight (kg/m) = (OD − WT) × WT × 0.0265. For other sizes, use our weight calculator.

How We Manufacture Inconel 625 Tubing in India

Each Inconel 625 tube undergoes a controlled process to conform to ASTM B444 or B704 and your requirement:

1. Checking of chemistry, heat number and traceability is done for hollows and strips.

2. Forming is done by cold drawing or pilgering seamless tubes and roll forming and welding without filler metal for welded tubes.

3. Heat treatment is done by annealing for Grade 1 or solution annealing for Grade 2.

4. Finishing is done by straightening, pickling or bright annealing, and cutting to the exact length; U-bending or coiling is done as required.

5. Non-destructive tests, hydrostatic tests and mechanical and dimensional tests are done.

6. Each tube is marked with grade and size, standard and heat number, capped, and then packed.

Quality Testing and Inspection

  • Hydrostatic pressure testing
  • Eddy current or ultrasonic testing
  • Positive material identification (PMI)
  • Chemical analysis by spectrometer
  • Tensile, yield and elongation testing
  • Hardness testing
  • Flattening and flaring tests
  • Intergranular corrosion test on request
  • Dimensional and surface inspection

Every order comes with a Mill Test Certificate as per EN 10204 3.1. Third-party inspection by an agency of your choice can be arranged on request.

Applications of Inconel 625 Tubes

Industry Typical use
Aerospace Hydraulic lines, exhaust ducting, engine tubing
Marine and offshore Seawater piping, umbilicals, control lines
Oil and gas Downhole control lines, sour gas service, risers
Chemical processing Heat exchangers, reactors, acid service
Power and nuclear Steam generator tubing, heat recovery systems
Pollution control Scrubber and flue gas systems
Instrumentation Capillary and instrumentation tubing

Types of Inconel 625 Tubes We Supply

By form By use
Seamless tubes (ASTM B444) Heat exchanger tubes
Welded tubes (ASTM B704) Instrumentation tubes
U-bend tubes Hydraulic tubes
Coiled tubing Condenser and boiler tubes
Capillary tubes Control line tubing
Polished tubes Chemical process tubes

Inconel 625 Tube Price per Kg

The cost of Inconel 625 tube depends on outside diameter, wall thickness, length, seamless or welded type, quantity and the current market prices of nickel, molybdenum and niobium. Instead of providing a price list, we quote a price for your exact requirement, generally on the same day. Provide your requirements size, type and quantity to get the best price of the day.

Supply Across India and Worldwide Export

Inconel 625 tubes are transported by us from Mumbai to Delhi, Ahmedabad, Vadodara, Pune, Hyderabad, Chennai, Bangalore, Kolkata and other industrial towns and cities in India. As an Inconel 625 tube supplier, who mainly focuses on export, we pack properly for sea transport, and include all export documents. We ship Inconel 625 tubes to the Middle East, Europe, Southeast Asia and Africa.

Why choose Eramets Steel Alloys

Customers buying Inconel 625 tubes from us in India prefer us because:

We provide certified ASTM B444 / B704 materials with full heat traceability.

We offer seamless and welded tubes in various forms like straight length tubes, U-bends and coiled tubes.

We supply Grade 1 and Grade 2 as per the customer’s requirement for design temperature.

For non-gauge length tubes, we cut to required length so that no material goes waste.

For project and bulk orders, we provide economical prices.

We provide support for selection of alloys and sizes.

ASTM B444 UNS N06625 Nickel Alloy 625 Seamless Tubing Supplier

At Eramets Steel Alloys, the Inconel 625 tube is widely recognized as one of the most reliable and high-performance materials used in the nuclear industry. Our premium quality Inconel 625 seamless tubes, Inconel 625 annealed tubes, and Alloy 625 tubing are extensively used in critical applications such as steam generators, reactor cores, control rod components, and nuclear waste reprocessing systems.

Inconel 625 Tube in mumbai

India's largest stock of UNS N06625 Tube according to international standards ASTM B751/ ASME SB751, ASTM B829/ ASME SB829, ASTM B775/ ASME SB775, ASTM B705/ ASME SB705, ASTM B704/ ASME SB704

The growing demand for UNS N06625 tubes in nuclear power plants is driven by their exceptional resistance to extreme environments. These nickel-based alloy 625 seamless tubes are engineered to withstand high temperatures, intense radiation, and aggressive corrosive conditions, making them an ideal choice for nuclear steam generator tubing and reactor systems.

In nuclear-powered steam generators, basic thermodynamic principles govern heat transfer and energy conversion. The materials used in these systems, including Inconel 625 tubing, must deliver outstanding thermal stability and structural integrity. Our Alloy 625 seamless tubes are specifically designed to perform under these demanding conditions, ensuring long-term durability and safety. Inconel 625 Tube Supplier

One of the key advantages of Inconel 625 pipes and tubes is their superior corrosion resistance. These tubes resist oxidation, pitting, and crevice corrosion even when exposed to high-pressure water and harsh chemical environments over extended periods. This makes Inconel 625 heat exchanger tubes highly suitable for long service life in nuclear applications.

Within the nuclear reactor core, where heat is continuously generated due to nuclear reactions, materials must maintain their mechanical strength under elevated temperatures. Inconel 625 seamless tubing excels in such environments due to its high tensile strength, excellent fatigue resistance, and remarkable toughness. Even under extreme thermal stress, the mechanical properties of Alloy 625 tubes remain stable and reliable.

Specification Chart of Inconel 625 Tube

Standard

ASTM, AISI, GB, JIS, customers’ requests available

Size

Round Tube: OD: 16-119mm or customized

Thickness

0.25mm-3.0mm

Length

6m or according to customers’ request

Sample

Free sample is available, but freight should be paid by you

 

Tolerance

 

Outer diameter: ±0.2mm

Thickness: ±0.05mm

Length: ±0.5mm

Ends

In plain end or bevelled ends or as your requirements

Welding Line Type

ERW (Electrical Resistance Weld)

 

 

Finishing

 

 

 

A. Sanded

B. Gloss #400,Mirror #600 – #1000

C. Brushed

D. Wood Grain

E. Embossed, Threaded

Application

Decorations, constructions, food industry, etc.

Certification

ISO, SGS

Round Pipe Size

16, 17, 18, 19, 20, 21, 22, 23, 25, 28, 31.8, 35, 36, 38.1, 48, 50.8, 60, 63.5, 76.2, 89, 101, 114 mm

Square Pipe Size

17, 18, 19, 20, 21, 22, 23, 24, 25, 28, 30, 36, 38, 50 mm

Rectangle Pipe Size

10*30, 10*40, 10*50, 20*10, 23*11, 24*12, 25*13, 28*25, 28*13, 29*14, 30*15, 30*20, 30*22, 34*22, 36*23, 50*25, 60*30, 75*45, 95*45 mm

Thickness

exact 0.25, 0.28, 0.32, 0.37, 0.41, 0.51, 0.61, 0.71, 0.91, 1.11, 1.15, 1.41 mm

Length

6m or according to customer’s request

Outer diameter

6.35-219mm

Tolerance

Outer diameter :±0.2mm

Thickness :±0.02mm

Length :±0.5mm

Process method

Code drawn, annealed with nitrogen protection, ultrasonic, automatic shape, polished

Test

Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector

Equipment

Press machine, Bending machine, Pushing Machine, electric bevelling machine Sand-blasting machine, etc

Origin

West Europe / Japanese / Indian / USA / Korean / American / European

Test Certificates

Manufacturer Test Certificate as per EN 10204 / 3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report

 

Inconel 625 Tube Price

Description Price Per Unit (INR) Price in USD
Inconel 625 Ss 06,35×0 , 71 Svt Dmd 436-45 – F62a0635071-088 (Tubes For Manufacturing Air Craft Parts) 2,294 30.72
Micro Gc Gas Analyzer Equipment Computer -pc&inconel 625 Reactor Tube (Cn15226007,czc5135sj9) 29,732 398.17
Inconel 625 Ss 06, 35×0, 71 Svt Dmd 436-45 (Tubes For Mfg Aircarft Parts) 2,314 30.99

 

Alloy 625 Tubing Weight

NPS
Outside Diameter
Wall Thickness
 
Weight
Weight
in
mm
in
mm
Sched
kg/Mtr
Lb/ft
1/2″
0.840
21
0.109
2.769
40 STD
1.268
0.851
     
0.147
3.734
80 STD
1.621
1.088
3/4″
1.050
27
0.113
2.870
40 STD
1.684
1.131
     
0.154
3.912
80 STD
2.195
1.474
1″
1.315
33
0.133
3.378
40 STD
2.501
1.679
     
0.179
4.547
80 STD
3.325
2.172
1 1/4″
1.660
42
0.140
3.556
40 STD
3.385
2.273
     
0.191
4.851
80 STD
4.464
2.997
1 1/2″
1.900
48
0.145
3.683
40 STD
4.048
2.718
     
0.200
5.080
80 STD
5.409
3.361
2″
2.375
60
0.154
3.912
40 STD
5.441
3.653
     
0.218
5.537
80 STD
7.480
5.022
2 1/2″
2.875
73
0.203
5.516
40 STD
8.629
5.793
     
0.276
7.010
80 STD
11.411
7.661
3″
3.500
89
0.216
5.486
40 STD
11.284
7.576
     
0.300
7.620
80 STD
15.272
10.253
4″
4.500
114
0.237
6.020
 
16.073
10.790
     
0.337
8.560
 
22.318
14.983
6″
6.625
168
0.188
4.775
 
19.252
12.924
     
0.203
5.516
 
20.739
13.923
     
0.219
5.563
 
22.318
14.983
     
0.250
6.350
 
25.354
17.021
     
0.280
7.112
40 STD
58.263
18.974
     
0.312
7.925
 
31.334
21.036
     
0.375
9.525
 
37.285
25.031
     
0.432
10.973
80 XHY
42.561
28.573
     
0.500
12.700
 
48.719
32.708
8″
8.625
219
0.188
4.775
 
25.233
16.940
     
0.203
5.156
 
27.198
18.259
     
0.219
5.563
 
29.286
19.661
     
0.250
6.350
20
33.308
22.361
     
0.277
7.036
30
36.786
24.696
     
0.322
8.179
40
42.352
28.554
     
0.375
9.525
 
49.216
33.041
     
0.406
10.312
60
53.085
35.638
     
0.500
12.700
80 XHY
64.627
43.388
10″
10.750
273
0.188
4.775
 
31.588
21.207
     
0.219
5.563
 
36.689
24.631
     
0.250
6.350
20
41.759
28.035
     
0.307
7.798
30
51.002
34.240
     
0.344
8.738
 
56.946
38.231
     
0.365
9.271
40 STD
63.301
40.483
     
0.438
11.125
 
71.852
48.238
     
0.500
12.700
60 XHY
81.530
54.735
     
0.594
15.088
80
95.969
64.429
12″
12.750
324
0.188
4.775
 
37.570
25.222
     
0.219
5.563
 
43.657
29.309
     
0.250
6.350
 
49.713
33.375
     
0.281
7.137
 
55.739
37.420
     
0.312
7.925
 
61.735
41.445
     
0.375
9.525
 
73.824
49.562
     
0.406
10.312
 
79.727
53.525
     
0.500
12.700
 
97.438
65.415
     
0.562
14.275
 
108.966
73.154
14″
14.000
356
0.188
4.775
 
41.308
27.732
     
0.219
5.563
 
48.012
32.233
     
0.250
6.350
20
54.685
36.713
     
0.281
7.137
 
61.327
41.172
     
0.312
7.925
 
67.939
45.611
     
0.375
9.525
STD
81.281
54.568
     
0.438
11.125
40
94.498
63.441
     
0.500
12.700
XHY
107.381
72.090
      0.625
15.875
 
132.983
89.278
16”
16.000
406
0.188
4.775
 
47.290
21.748
     
0.219
5.563
 
54.980
36.910
     
0.250
6.350
10
62.639
42.053
     
0.281
7.137
 
70.268
47.174
     
0.312
7.925
20
77.866
52.275
     
0.344
8.738
 
85.677
57.519
     
0.375
9.525

30

STD

93.213
62.578
     
0.438
11.125
 
108.433
72.797
     
0.500
12.700

40

XHY

123.289
82.770
18″
18.000
457
0.219
5.563
 
61.948
41.588
     
0.250
6.350
 
70.593
47.393
     
0.281
7.137
 
79.208
53.176
     
0.312
7.925
20
87.792
58.939
     
0.375
9.525
STD
105.144
70.588
     
0.438
11.125
30
122.369
82.152
     
0.500
12.700
XHY
139.198
93.450
     
0.562
14.275
40
155.904
104.666
     
0.625
15.875
 
172.754
115.978
20″
20.000
508
0.250
6.350
 
78.547
52.733
     
0.282
7.163
 
88.458
59.386
     
0.312
7.925
 
97.719
65.604
     
0.375
9.525
20 STD
117.075
78.598
     
0.438
11.125
 
136.305
91.508
     
0.500
12.700
30 XHY
155.106
104.130
     
0.594
15.088
40
183.378
123.110
     
0.625
15.875
 
192.640
129.328
     
0.688
17.475
 
211.368
141.901
24″
24.000
610
0.250
6.350
 
94.456
63.413
     
0.281
7.137
 
106.029
71.183
     
0.312
7.925
 
117.573
18.932
     
0.375
9.525
20 STD
140.938
64.618
     
0.438
11.125
 
164.176
110.219
     
0.500
12.700
XHY
186.923
125.490
     
0.625
15.875
 
232.410
156.028
     
0.688
17.475
40
255.148
171.293
     
0.750
19.050
 
277.401
186.233
30″
30.000
762
0.250
6.350
 
118.318
79.433
     
0.281
7.137
 
132.851
89.189
     
0.312
7.925
10
147.353
98.925
     
0.375
9.525
STD
176.731
118.648
     
0.438
11.125
 
205.983
138.286
     
0.500
12.700
20 XHY
234.647
157.530
     
0.625
15.875
30
292.066
196.078
     
0.688
17.475
 
320.817
215.380
     
0.750
19.050
 
348.988
234.293
36″
36.000
914
0.250
6.350
 
142.180
95.453
     
0.281
7.137
 
159.672
107.196
     
0.312
7.925
10
177.133
118.918
     
0.375
9.525
STD
215.525
142.678
     
0.438
11.125
 
247.790
166.353
     
0.500
12.700
20 XHY
282.372
198.570
     
0.625
15.875
 
351.723
236.128
     

0.688

17.475
 
386.487
259.467
     

0.750

19.050
 
420.576
282.353
42″
42.000
1067
0.312
7.925
 
206.914
138.911
     
0.375
9.525
STD
248.319
166.708
     
0.500
12.700
XHY
33.097
221.610
     
0.750
19.050
 
492.163
330.413
48″
48.000
1219
0.375
9.525
STD
284.112
190.738
     
0.438
11.125
 
331.404
222.487
     
0.500
12.700
XHY
377.822
253.650
     
0.750
19.050
 
563.750
378.473
     
0.875
22.225
 
655.969
440.383

Pressure Rating of Inconel UNS N06625 Tube Tube

Tube O.D.
(in.)
Wall Thickness of Tube (inches)
.028 .035 .049 .065 .083 .095 .109 .120
Working Pressure (psig)
1/8 7900 10100            
1/4 3700 4800 7000 9500        
5/16   3700 5400 7300        
3/8   3100 4400 6100        
1/2   2300 3200 4400        
3/4     2200 3000 4000 4600    
1       2200 2900 3400 3900 4300

WNR 2.4856 Tubing Chemical Composition

Grade C Mn Si S Cu Fe Ni Cr
Inconel 625 0.10max 0.50 max 0.50 max 0.015max – 5.0 max 58.0 min 20.0 – 23.0

625 Inconel Tube mechanical properties

Element Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
Inconel 625 8.4 g/cm3 1350 °C (2460 °F) Psi – 1,35,000 , MPa – 930 Psi – 75,000 , MPa – 517 42.5 %

Equivalent Grade of ASTM B516 Inconel 625 Tube

STANDARD WERKSTOFF NR. UNS JIS BS GOST AFNOR EN
Inconel 625 2.4856 N06625 NCF 625 NA 21 ХН75МБТЮ NC22DNB4M NiCr22Mo9Nb

Available Stock of Alloy 625 Tubing

UNS N06625 Decorative Tubes 625 Inconel Alloy Round Tubes
inconel 625 Instrumentation Tube GOST ХН75МБТЮ Round Tubes
Alloy 625 Decorative Tube inconel 625 Round Tube
ASME SB705 625 Inconel Decorative Tubes UNS N06625 Polish Tubes
Alloy 625 Heat Exchager Tube ASME SB705 625 Inconel Polish Tubes
625 Inconel Instrumentation Tubes UNS N06625 Round Tubes
GOST ХН75МБТЮ Instrumentation Tubes 625 Inconel Polish Tubes
625 Inconel Alloy thermocouple Tube ASME SB705 625 Inconel Polish Tube
ASTM B705 625 Inconel Capillary Tube inconel 625 EFW Tube
inconel 625 Colour Coated Tube inconel 625 Welded Tube
Alloy 625 Secondary & Surplus Tube WERKSTOFF NR. 2.4856 Outside Polished Tube
UNS N06625 U Shaped Tube 625 Alloy exhaust tubing
Inconel Alloy 625 Boiler Tube ASME SB444 625 Inconel Cold Drawn Tube
625 Inconel Alloy Welded Tube Inconel Alloy 625 redrawn tubing
inconel 625 Condensers Tube WERKSTOFF NR. 2.4856 Super Heaters
Alloy 625 Chemical Process Tube Alloy 625 Welded coiled tubing

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