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Inconel 718 Pipes & Tubes – Nickel Alloy 718 Seamless Pipes & Tubes Supplier

Inconel 718 Pipes and Inconel 718 Tubes<br />
Table of Content

Kalpataru Piping is a leading manufacturer and supplier that exports in high-performance nickel alloy piping products. We are a large supplier of Inconel 718 Pipes and tubes. We designed Inconel 718 seamless and welded pipes in accordance with standards such as  ASTM, ASME, & many other international standards. We are a leading stockist of UNS N07718 Inconel 718 pipes and tubes & offering products in various sizes, thicknesses and specifications. These are Inconel pipes of alloy 718 that are produced with high pressure, high temperatures, and corrosion conditions.

We also provide customized Inconel 718 pipes and tubes according to client specifications and technical specifications. Our Inconel products are quality examined and performance tested & supplied at competitive prices and assured delivery on time.

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Introduction To Inconel 718 Alloy

Inconel Alloy 718 (UNS N07718 / W.Nr. 2.4668) is a high-performance nickel-chromium alloy product. It is very reliable in a wide temperature range, with cryogenic temperatures of -423 °C as well as 1300 °C and it has excellent tensile, fatigue, creep, and rupture strength. These properties have formed the basis of Inconel 718 pipes and tubes, which provide outstanding performance under both low temperature corrosive conditions and high temperature and pressure services.

The Inconel alloy 718 tubes slow age-hardening reaction permits annealing and welding without abrupt hardening in heating and cooling, which facilitates easy fabrication and welding with other alloys. Alloy 718 pipes and tubes are commonly used in heat exchangers, anaerobic

Product Features of Inconel 718 Pipes & Tubes:

  • Excellent corrosion and oxidation resistance
  • Accurate dimensions and smooth surface finish
  • Good weldability and fabrication characteristics
  • Long service life in harsh environments

Types of Inconel 718 Tubes

Alloy 718 Seamless Vs Welded Pipes & Tubes

Inconel 718 pipes and tubes have two types, and these are mostly welded and seamless.  Inconel 718 Seamless Pipes and Tubes are manufactured using the hot working and cold drawing processes, the result of which does not leave any welded joints. Because of the lack of seam, these tubes offer better structural integrity, even strength and increased pressure and stress resiliency. 

Inconel 718 Welded Pipes and Tubes Inconel 718 Welded Pipes and Tubes are developed by bending metal strips into the shape of a cylinder and welding them at the seam by using the latest welding methods. These pipes provide high mechanical strength, dimensional precision and are cost-effective, thus applicable in moderate pressures of operation. Both welded and seamless Alloy Inconel 718 pipes and tubes are well-welded and have high resistance against cracking of the post-weld. The customers may select the most appropriate type depending on the application, pressure requirements and operating conditions. Besides Inconel 718 there are also other nickel alloy grades like Inconel 600 pipes and tubes, which are produced to satisfy various industry requirements.

Inconel 718 Pipes Standards & Specifications: ASTM A163 / ASME SB163 / AMS 5590 & AMS 5589

The Inconel 718 piping is produced following ASTM B163 / ASME SB163 / AMS 5590 / AMS 5589, with the consistency of chemical composition, mechanical strength, dimensional accuracy, as well as surface quality.

Specification Chart for Inconel 718 (UNS N00718) Pipes

ASTM Specification

AMS 5590, AMS 5589

International Specification

WERKSTOFF Nr 2.4668 , UNS N07718

Standard

GB, DTD, ASME, AISI, ASTM, TOCT, JIS, NF, SAE, DIN, AMS, DS, EN

Size of Seamless Pipe

Wall thickness.: 0.05- 20 milimeter, 4 – 219 milimeter

Size of Welded Pipe

5.0 to 1219.02 milimeter

size of EFW Pipe

5.0 to 1219.02 milimeter

Seamless Tube Size

3.35 milimeter To 101.6 milimeter OD

Welded Tube Size

6.35 milimeter To 152 milimeter OD

Bwg & Swg

18 Swg., 14 20 Swg., Swg. Swg., 12 16 Swg., 10 Swg.

Tubing wall thickness

0.020″ –0.220″, (custom wall thicknesses available)

Pipe Schedule

SCH20, XS, STD, XXS, SCH60, SCH140, SCH80, SCH80, SCH5, SCH40S, SCH40, SCH120, SCH10S, SCH10, SCH30, SCH160

Length

Standard & Cut length , Single Random, Double Random Pipe

Finish

AP (Annealed & Pickled), BA (Bright & Annealed), NO.1, 2B, Polished, MF, HL, NO.4, Mirror finish, BA, 8K etc

End

Plain End, Beveled End, Treaded Pipe, Screwed ends

Form

Hydraulic, Rectangular, Coiled, Square, Hollow, Round, Straight Pipes/tubes, “U” Shape, Pan Cake Coils, Boiler, LSAWetc.

Application

Dairy Pipe, Oil Pipe/tube, Gas Pipe/tube, Fluid Pipe/tube, Boiler Tube, Heat exchanger Tube

Type

Seamless /ERW/ EFW / Welded / Fabricated /CDW /DOM/CEW Inconel 718 Pipe

Marking

Heat No. (Or as per need.), Thickness, OD, Grade, Standard Length

Value Added Service

Expansion and Draw as per needed Length and Size, , Polish (Comilimeterercial and Electro), Machining, Annealed & Pickled Bending Etc.

Specialize in
  • Large Diameter Inconel 718 Pipe
  • Nickel NW 2200 Capillary Tube & Other Odd Size 
  • ASME SB163 Alloy 718 Heat Exchanger & Condenser Tube

Inconel 718 Alloy Tube Chemical Composition

Grade C Mn Si S Cu Fe Ni Cr
Inconel 718 0.08 max 0.35 max 0.35 max 0.015max 0.30 max – 50.00 – 55.00 17.00 – 21.00

Mechanical Properties Chart of Inconel 718 Pipe

Element Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
718 8.14 g/cm3 1400 °C (2550 °F) Psi – 80,000 , MPa – 550 Psi – 32,000 , MPa – 220 30 %

Equivalent Material of Alloy 718 Pipe

Grade

UNS No

Old British

Euronorm

GOST

Japanese JIS

BS

En

No

AFNOR

Inconel 718

N07718

–

–

2.4668

–

–

–

Physical Properties Of Alloy 718 Pipe

Density

g/centimeter3

8.019

Thermal Conductivity

W.m -1.°K-1

11.04

Electrical Resistivity

μohm/cm

1.032

Specific Heat (0-100°C)

J.kg-1.°K-1

435

Modulus Elasticity

GPa

200

Thermal Expansion

μm/μm/°C

13

Pressure Rating of DIN 2.4668 Pipe and Tube

Inconel 718 Pipe O.D.

(in.)

 Wall Thickness of Inconel 718 Pipe (inches)
0.028 0.035 0.083 0.049 0.065 0.095 0.109 0.120
  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 4000 2200 3000 4600
1 2900 2200 3400 3900 4300

Size Ranges & Dimensional Standards for Inconel 718 Pipes

Inconel 718 pipes and tubes are manufactured in a wide range of sizes and dimensional standards to meet diverse industrial requirements. Available in various outer diameters, wall thicknesses, and lengths, these pipes and tubes conform to international standards, ensuring high strength, excellent corrosion resistance, and reliable performance in high-temperature and high-pressure applications.

Dimensional Technical Standard of Inconel Alloy 718 pipe

Nominal Thickness

(in)

MM

Pipe Size

(in)

Transverse Areas

(in2)

MM2

Diameter

(in)

MM

Volume

(ft3/ft)

 Number of Threads per inch of Screw Weight

Length of Pipe

(ft per sq.0 foot of surface)
Internal External Steel Internal External (kg/m) (lb/ft)

Internal Surface

(ft)

External Surface

(ft)
0.007 1/8 0.006 0.013 0.007 0.027 0.0405 0.00004 27 0.036 0.024 14.020 9.043
0.009 ¼ 0.010 0.023 0.013 0.036 0.0540 0.00007 18 0.063 0.042 10.049 7.007
0.009 3/8 0.019 0.036 0.017 0.049 0.0675 0.00013 18 0.084 0.057 7.075 5.066
0.011 ½ 0.030 0.055 0.025 0.062 0.0840 0.00021 14 1.026 0.085 6.014 4.055
0.011 ¾ 0.053 0.087 0.033 0.082 1.0050 0.00037 14 1.068 1.013 4.064 3.064
0.013 1 0.086 1.036 0.049 1.005 1.0315 0.00060 11 ½ 2.050 1.068 3.064 2.090
0.014 1 ¼ 1.050 2.016 0.067 1.038 1.0660 0.00104 11 ½ 3.038 2.027 2.077 2.030
0.015 1 ½ 2.004 2.084 0.080 1.061 1.0900 0.00141 11 ½ 4.004 2.072 2.037 2.001
0.015 2 3.036 4.043 1.008 2.007 2.0375 0.00233 11 ½ 5.043 3.065 1.085 1.061
0.020 2 ½ 4.079 6.049 1.070 2.047 2.0875 0.00333 8 8.062 5.079 1.055 1.033
0.022 3 7.039 9.062 2.023 3.007 3.0500 0.00513 8 11.027 7.058 1.025 1.009
0.023 3 ½ 9.089 12.056 2.068 3.055 4.0000 0.00687 8 13.056 9.011 1.008 0.095
0.024 4 12.073 15.090 3.017 4.003 4.0500 0.00884 8 16.006 10.079 0.095 0.085
0.026 5 20.000 24.030 4.030 5.005 5.0563 0.01389 8 21.074 14.061 0.076 0.069
0.028 6 28.089 34.047 5.058 6.007 6.0625 0.02006 8 28.023 18.097 0.063 0.058
0.032 8 50.002 58.042 8.040 7.098 8.0625 0.03552 8 42.049 28.055 0.048 0.044
0.037 10 78.085 90.076 11.090 10.002 10.0750 0.05476 8 60.024 40.048 0.038 0.036
0.041 12 111.090 127.064 15.074 11.094 12.0750 0.07763 8 79.077 53.060 0.032 0.030
0.044 14 135.030 153.094 18.064 13.013 14.0000 0.09354 8 93.075 63.000 0.028 0.027
0.050 16 176.070 201.005 24.035 15.000 16.0000 1.02230 8 116.008 78.000 0.025 0.024
0.056 18 224.000 254.085 30.085 16.088 18.0000 1.05550 8 156.026 105.000 0.023 0.021
0.059 20 278.000 314.015 36.015 18.081 20.0000 1.09260 8 183.005 123.000 0.020 0.019
0.069 24 402.010 452.040 50.030 22.063 24.0000 2.07930 8 254.048 171.000 0.017 0.016

 

Size Chart In Mm of Inconel 718 Capillary Tube

Regular Wall (RW) mm Gauge Extra Thin Wall (XTW) mm Outside Diameter Tolerance mm Ultra Thin Wall (UTW) mm Thin Wall (TW) mm
0.0064 to 0.0089 30 0.0304 to 0.0317
0.0064 to 0.0089 29 o.0330 to 0.0342
0.0076 to 0.0102 28 0.0355 to 0.0368
0.0089 to 0.0115 27 0.0406 to 0.0419 0.0064 to 0.0089
0.0089 to 0.0114 26 0.0457 to 0.0469
0.0115 to 0.0140 25 0.0508 to 0.0520 0.0089 to 0.0114
0.0114 to 0.0140 24 0.0558 to 0.0571 0.0051 to 0.0102 0.0089 to 0.0114
0.0140 to 0.0165 23 0.0635 to 0.0647 0.0051 to 0.0102 0.0089 to 0.0114
0.0140 to 0.0165 22 0.0077 to 0.0102 0.0711 to 0.0723 0.0051 to 0.0102 0.0096 to 0.0121
0.0140 to 0.0165 21 0.0812 to 0.0825 0.0051 to 0.0102 0.0102 to 0.0127
0.0108 to 0.0165 20 0.0901 to 0.0914 0.0108 to 0.0134
0.0166 to 0.0216 19 0.0070 to 0.0108 1.0054 to 1.0079 0.0102 to 0.0140
0.0191 to 0.0241 18 0.0083 to 0.0121 1.0257 to 1.0282 0.0051 to 0.0102 0.0127 to 0.0165
0.0177 to 0.0229 17 0.0083 to 0.0127 1.0460 to 1.0485 0.0057 to 0.0102 0.0115 to 0.0152
0.0204 to 0.0254 16 0.0096 to 0.0133 1.0638 to 1.0663 0.0070 to 0.0121 0.0127 to 0.0165
0.0204 to 0.0254 15 0.0096 to 0.0134 1.0816 to 1.0841 0.0070 to 0.0121 0.0127 to 0.0165
0.0216 to 0.0292 14 0.0114 to 0.0165 2.0082 to 2.0133 0.0076 to 0.0134 0.0165 to 0.0229
0.0267 to 0.0343 13 2.0387 to 2.0438 0.0191 to 0.0267
0.0267 to 0.0321 12 2.0743 to 2.0749
0.0293 to 0.0368 11 3.0023 to 3.0073 0.0216 to 0.0292
0.0318 to 0.0394 10 0.0216 to 0.0292 3.0378 to 3.0429

Available size of Alloy 718 Square Tube

DIMENSIONS WEIGHT PER WALL DIMENSIONS WEIGHT PER WALL
(MM) METRE (KG) (MM) (MM) METRE (KG) (MM)
12.07 x 12.07 0.044 1.020 40 x40 1.049 1.020
12.07 x 12.07 0.055 1.050 40 x40 1.085 1.050
15 x 15 0.053 1.020 40 x40 2.045 2.000
15 x 15 0.065 1.050 40 x40 3.075 3.000
20 x 20 0.071 1.020 50 x50 2.032 1.050
20 x 20 0.088 1.050 50 x50 3.008 2.000
20 x 20 1.019 2.000 50 x50 4.065 3.000
25 x 25 0.092 1.020 60 x60 3.071 2.000
25 x 25 1.014 1.050 60 x60 5.049 3.000
25 x 25 1.049 2.000 70 x70 6.053 3.000
25 x 25 2.020 3.000 80 x80 4.098 2.000
30 x 30 1.010 1.020 80 x80 7.053 3.000
30 x 30 1.037 1.050 100 x 100 6.040 2.000
30 x 30 1.084 2.000 100 x 100 9.053 3.000
30 x 30 2.072 3.000

Ranging in size from Astm B163 Alloy 718 welded pipe

Pipe WT

mm

ASME SB163 Alloy 718 Pipe OD

mm

 Sch in.0 Kg/m
1.065 13.072 10S 1/4 0.050
2.024 13.072 40S 1/4 0.064
3.002 13.072 80S 1/4 0.081
1.065 17.015 10S 3/8 0.064
2.031 17.015 40S 3/8 0.086
3.020 17.015 80S 3/8 1.012
2.011 21.034 10S 1/2 1.002
2.077 21.034 40S 1/2 1.029
3.073 21.034 80S 1/2 1.065
2.011 26.067 10S 3/4 1.030
2.087 26.067 40S 3/4 1.071
3.091 26.067 80S 3/4 2.023
2.077 33.040 10S 1 2.013
3.038 33.040 40S 1 2.054
4.055 33.040 80S 1 3.029
6.0352) 33.040 160 1 4.030
2.077 42.016 10S 1¼ 2.073
3.056 42.016 40S 1¼ 3.044
4.085 42.016 80S 1¼ 4.053
6.0352) 42.016 160 1¼ 5.069
2.077 48.026 10S 1½ 3.016
3.068 48.026 40S 1½ 4.011
5.008 48.026 80S 1½ 5.049
2.077 60.033 10S 2 3.099
3.091 60.033 40S 2 5.052
5.054 60.033 80S 2 7.060
8.0742) 60.033 160 2 11.029
3.005 73.003 10S 2½ 5.035
5.016 73.003 40S 2½ 8.077
7.001 73.003 80S 2½ 11.059
3.005 88.090 10S 3 6.056
5.049 88.090 40S 3 11.047
7.062 88.090 80S 3 15.051
11.0132) 88.090 160 3 21.067
3.005 101.060 10S 3½ 7.053
5.074 101.060 40S 3½ 13.078
8.008 101.060 80S 3½ 18.092
3.005 114.030 10S 4 8.050
6.002 114.030 40S 4 16.032
8.056 114.030 80S 4 22.067
13.0492) 114.030 160 4 34.005
6.055 141.030 40S 5 22.010
9.053 141.030 80S 5 31.044
15.0882) 141.030 160 5 49.087
3.04 168.028 10S 6 14.004
7.011 168.028 40S 6 28.069
10.097 168.028 80S 6 43.021
14.027 168.028 120 6 54.075
18.0262) 168.028 160 6 68.059
8.018 219.008 40S 8 43.020
12.07 219.008 80S 8 65.063
18.023 219.008 120 8 91.030
23.0012) 219.008 160 8 112.097

OD = Inconel 718 Pipe outside diameter
WT = Inconel 718 Pipe wall thickness

Outer Diameter (OD) of Inconel 718 Tube

Types Out diameter Length Wall thickness
NB Sizes (available) 1/8” ~ 8” Upto 6 Meters SCH 40 /SCH 10 /SCH 160/ SCH 5 / SCH 80
Inconel 718 Seamless tube  (as per need) 5.00 milimeter ~ 203.02 milimeter as per need
Inconel 718 Welded tube (available + as per need) 5.00 milimeter ~ 1219.02 milimeter 1.00 ~ 15.00 milimeter

Inconel Alloy 718 Pipe Schedule Chart

3 1/2″ IPS( 4.000″O. D.) 1/8″ IPS(.405″O. D.)
SCH 40, 10, 160, 80, XXH SCH 40, 80
4″ IPS(4.500″O. D.) 1/4″ IPS(.540″O. D.)
SCH 40, 10, 160, 80, XXH SCH 40, 10, 80
5″ IPS( 5.563″O. D.) 3/8″ IPS(.675″O. D.)
SCH 40, 10, 160, 80, XXH SCH 40, 10, 80
6″ IPS(6.625″O. D.) 1/2″ IPS(.840″O. D.)
SCH 10, 5, 80, 40, 160, 120 XXH SCH 5, 40, 10, 160, 80, XXH
8 ” IPS(8.625″O. D.) 3/4″ IPS(1.050″O. D.)
SCH 10, 5, 80, 40, 160, 120 XXH SCH 40, 10, 160, 80, XXH
10″ IPS(10.750″O. D.) 1″ IPS:(1.315′O. D.)
SCH 10, 20, TRUE 80(.500), 40, 80 (.500), SCH 5, 40, 10, 160, 80, XXH
12″ IPS(12.750″O. D.) 1-1/4″ IPS(1.660″O. D.)
SCH 10, 20, TRUE40(.406), 40(.375), SCH80(.500) SCH 40, 10, 160, 80, XXH
14″ IPS(14.000″O. D.) 1-1/2″ IPS(1.900″O. D.)
SCH10(.188), SCH40(.375) SCH 40, 10, 160, 80, XXH
16″ IPS(16.000″O. D.) 2″ IPS(2.375″O. D.)
SCH10(.188), SCH40(.375) SCH 40, 10, 160, 80, XXH
18″ IPS (18.000″O. D.) 2 1/2″ IPS(2.875″O. D.)
SCH-40 (.375) SCH 40, 10, 160, 80, XXH
3″ IPS( 3.500″O. D.)
SCH 5, 40, 10, 160, 80, XXH

Inconel 718 Pipe Weight Chart

The following chart provides theoretical weights for commonly ordered sizes. For precise calculations, please use our Pipe Weight Calculator.

NPS Wall Thickness Outside Diameter Weight Weight
inch milimeter inch milimeter kg/Mtr Schedule Lb/ft
1/2″ 0.0109 2.0769 0.0840 21 1.0268 40 STD 0.0851
0.0147 3.0734 1.0621 80 STD 1.0088
3/4″ 0.0113 2.0870 1.0050 27 1.0684 40 STD 1.0131
0.0154 3.0912 2.0195 80 STD 1.0474
1″ 0.0133 3.0378 1.0315 33 2.0501 40 STD 1.0679
0.0179 4.0547 3.0325 80 STD 2.0172
1 1/4″ 0.0140 3.0556 1.0660 42 3.0385 40 STD 2.0273
0.0191 4.0851 4.0464 80 STD 2.0997
1 1/2″ 0.0145 3.0683 1.0900 48 4.0048 40 STD 2.0718
0.0200 5.0080 5.0409 80 STD 3.0361
2″ 0.0154 3.0912 2.0375 60 5.0441 40 STD 3.0653
0.0218 5.0537 7.0480 80 STD 5.0022
2 1/2″ 0.0203 5.0516 2.0875 73 8.0629 40 STD 5.0793
0.0276 7.0010 11.0411 80 STD 7.0661
3″ 0.0216 5.0486 3.0500 89 11.0284 40 STD 7.0576
0.0300 7.0620 15.0272 80 STD 10.0253
4″ 0.0237 6.0020 4.0500 114 16.0073 10.0790
0.0337 8.0560 22.0318 14.0983
6″ 0.0188 4.0775 6.0625 168 19.0252 12.0924
0.0203 5.0516 20.0739 13.0923
0.0219 5.0563 22.0318 14.0983
0.0250 6.0350 25.0354 17.0021
0.0280 7.0112 58.0263 40 STD 18.0974
0.0312 7.0925 31.0334 21.0036
0.0375 9.0525 37.0285 25.0031
0.0432 10.0973 42.0561 80 XHY 28.0573
0.0500 12.0700 48.0719 32.0708
8″ 0.0188 4.0775 8.0625 219 25.0233 16.0940
0.0203 5.0156 27.0198 18.0259
0.0219 5.0563 29.0286 19.0661
0.0250 6.0350 33.0308 20 22.0361
0.0277 7.0036 36.0786 30 24.0696
0.0322 8.0179 42.0352 40 28.0554
0.0375 9.0525 49.0216 33.0041
0.0406 10.0312 53.0085 60 35.0638
0.0500 12.0700 64.0627 80 XHY 43.0388
10″ 0.0188 4.0775 10.0750 273 31.0588 21.0207
0.0219 5.0563 36.0689 24.0631
0.0250 6.0350 41.0759 20 28.0035
0.0307 7.0798 51.0002 30 34.0240
0.0344 8.0738 56.0946 38.0231
0.0365 9.0271 63.0301 40 STD 40.0483
0.0438 11.0125 71.0852 48.0238
0.0500 12.0700 81.0530 60 XHY 54.0735
0.0594 15.0088 95.0969 80 64.0429
12″ 0.0188 4.0775 12.0750 324 37.0570 25.0222
0.0219 5.0563 43.0657 29.0309
0.0250 6.0350 49.0713 33.0375
0.0281 7.0137 55.0739 37.0420
0.0312 7.0925 61.0735 41.0445
0.0375 9.0525 73.0824 49.0562
0.0406 10.0312 79.0727 53.0525
0.0500 12.0700 97.0438 65.0415
0.0562 14.0275 108.0966 73.0154
14″ 0.0188 4.0775 14.0000 356 41.0308 27.0732
0.0219 5.0563 48.0012 32.0233
0.0250 6.0350 54.0685 20 36.0713
0.0281 7.0137 61.0327 41.0172
0.0312 7.0925 67.0939 45.0611
0.0375 9.0525 81.0281 STD 54.0568
0.0438 11.0125 94.0498 40 63.0441
0.0500 12.0700 107.0381 XHY 72.0090
0.0625 15.0875 132.0983 89.0278
16” 0.0188 4.0775 16.0000 406 47.0290 21.0748
0.0219 5.0563 54.0980 36.0910
0.0250 6.0350 62.0639 10 42.0053
0.0281 7.0137 70.0268 47.0174
0.0312 7.0925 77.0866 20 52.0275
0.0344 8.0738 85.0677 57.0519
0.0375 9.0525 93.0213

30

STD

 62.0578
0.0438 11.0125 108.0433 72.0797
0.0500 12.0700 123.0289

40

XHY

 82.0770
18″ 0.0219 5.0563 18.0000 457 61.0948 41.0588
0.0250 6.0350 70.0593 47.0393
0.0281 7.0137 79.0208 53.0176
0.0312 7.0925 87.0792 20 58.0939
0.0375 9.0525 105.0144 STD 70.0588
0.0438 11.0125 122.0369 30 82.0152
0.0500 12.0700 139.0198 XHY 93.0450
0.0562 14.0275 155.0904 40 104.0666
0.0625 15.0875 172.0754 115.0978
20″ 0.0250 6.0350 20.0000 508 78.0547 52.0733
0.0282 7.0163 88.0458 59.0386
0.0312 7.0925 97.0719 65.0604
0.0375 9.0525 117.0075 20 STD 78.0598
0.0438 11.0125 136.0305 91.0508
0.0500 12.0700 155.0106 30 XHY 104.0130
0.0594 15.0088 183.0378 40 123.0110
0.0625 15.0875 192.0640 129.0328
0.0688 17.0475 211.0368 141.0901
24″ 0.0250 6.0350 24.0000 610 94.0456 63.0413
0.0281 7.0137 106.0029 71.0183
0.0312 7.0925 117.0573 18.0932
0.0375 9.0525 140.0938 20 STD 64.0618
0.0438 11.0125 164.0176 110.0219
0.0500 12.0700 186.0923 XHY 125.0490
0.0625 15.0875 232.0410 156.0028
0.0688 17.0475 255.0148 40 171.0293
0.0750 19.0050 277.0401 186.0233
30″ 0.0250 6.0350 30.0000 762 118.0318 79.0433
0.0281 7.0137 132.0851 89.0189
0.0312 7.0925 147.0353 10 98.0925
0.0375 9.0525 176.0731 STD 118.0648
0.0438 11.0125 205.0983 138.0286
0.0500 12.0700 234.0647 20 XHY 157.0530
0.0625 15.0875 292.0066 30 196.0078
0.0688 17.0475 320.0817 215.0380
0.0750 19.0050 348.0988 234.0293
36″ 0.0250 6.0350 36.0000 914 142.0180 95.0453
0.0281 7.0137 159.0672 107.0196
0.0312 7.0925 177.0133 10 118.0918
0.0375 9.0525 215.0525 STD 142.0678
0.0438 11.0125 247.0790 166.0353
0.0500 12.0700 282.0372 20 XHY 198.0570
0.0625 15.0875 351.0723 236.0128
0.0688 17.0475 386.0487 259.0467
0.0750 19.0050 420.0576 282.0353
42″ 0.0312 7.0925 42.0000 1067 206.0914 138.0911
0.0375 9.0525 248.0319 STD 166.0708
0.0500 12.0700 33.0097 XHY 221.0610
0.0750 19.0050 492.0163 330.0413
48″ 0.0375 9.0525 48.0000 1219 284.0112 STD 190.0738
0.0438 11.0125 331.0404 222.0487
0.0500 12.0700 377.0822 XHY 253.0650
0.0750 19.0050 563.0750 378.0473
0.0875 22.0225 655.0969 440.0383

Note: All listed weights are theoretical and calculated on nominal dimensions. Actual weights may vary by up to ±10% due to manufacturing tolerances. For heavy wall schedules such as SCH 80, SCH 160, and XXS, please contact us for a detailed and accurate weight chart.

718 Inconel Welded Tube Tolerances

WALL THICKNESS INCHES OD +/- INCHES OD INCHES
0.0025 – 0.0065 0.0005 1/2″ – 1″ incl0.0
Over 0.0065 – 0.0134 0.0010
0.0025 – 0.0065 0.0008 1 – 1-1/2″ incl0.0
Over 0.0065 – 0.0134 0.0010
0.0025 – 0.0049 0.0010 1-1/2″ – 2″ incl0.0
Over 0.0049 – 0.0083 0.0011
Over 0.0083 – 0.0148 0.0012
0.0032 – 0.0065 0.0012 2″ – 2-1/2″ incl0.0
Over 0.0065 – 0.0109 0.0013
Over 0.0109 – 0.0165 0.0014
0.0032 – 0.0165 0.0014 2-1/2″ – 3-1/2″ incl0.0
Over 0.0165 – 0.0220 0.0020
0.0083 – 0.0165 0.0020 3-1/2″ – 5″ incl0.0
Over 0.0165 – 0.0220 0.0025

Finishes and Coatings of Inconel Alloy 718 Heat Exchanger Tube

  • Novolac Epoxy
  • High Functionality Epoxy – Curran Coating
  • liquid epoxy coatings
  • Thin Film Engineered Polymer Coatings
  • HVAC Chillers and Heat Exchanger Coatings
  • Sakaphen- Shell and tube heat exchanger lining
  • Surface Condenser Tube Sheets
  • IGS high velocity thermal spray (HVTS) coating solutions
  • Phenol Epoxy
  • Curran 1000 T Hybrid Epoxy

Applications of Inconel 718 Pipes

Inconel 718 pipes are applicable in high-pressure and high-temperature applications where the strength and resistance to corrosion are essential.

  • Aerospace & Aviation: The aircraft engines, exhaust systems and turbine components are fitted with inconel 718 pipes because they are very strong and can withstand extreme heat and stress.
  • Oil & Gas Industry: These pipes are suitable in high-pressure pipeline services, offshore platforms, and sour gas services, where there is a need to have corrosion-inhibiting and NACE-conformity services.
  • Chemical Processing/Petrochemical: Reactors, pressure vessels, and process piping that operate with aggressive chemicals and at high temperatures utilize Inconel 718 pipes.
  • Power Generation: Applied to gas turbines, nuclear plants, and high-temperature steam systems due to their ability to retain strength and stability at thermal stress.
  • Heat Exchangers: Heat exchangers and heat recovery systems make heavy use of the alloy 718 pipes and seamless tubes that are effective in transferring heat and having a long life.
  • Marine & Offshore: These pipes resist corrosion by seawater and other severe marine environments and are, therefore, applicable in offshore structures and shipbuilding.
  • Cryogenic Applications: Inconel 718 pipes can be applied at extremely low temperatures and in cryogenic storage, LNG systems, and low-temperature process lines.

Testing & Documentation

Every Inconel 718 pipe goes through quality testing and is provided with the full documentation to maintain authenticity of the material used, reliability of performance of the material and conformity to the international standards.

Alloy 718 Welded Pipe Testing

  • Flaring Test – Checks ductility and weld soundness.
  • Flattening Test – Verifies pipe strength and weld integrity
  • Micro & Macro Examination – Evaluates weld structure and grain flow
  • Intergranular Corrosion (IGC) Test – Confirms resistance to intergranular attack
  • Pitting Resistance Test – Ensures performance in aggressive environments
  • Chemical Analysis (Spectro Analysis) – Verifies correct alloy composition
  • Mechanical Testing (Tensile Test) – Confirms tensile strength and elongation
  • Hardness Test – Measures material hardness and uniformity
  • Positive Material Identification (PMI) – Confirms material grade and traceability

Nickel Alloy 718 Pipe Documentation

  • NABL-approved laboratory test reports
  • Material traceability records
  • Raw material test reports
  • EN 10204 3.1 & EN 10204 3.2 Material Test Certificates (MTC)
  • Test certificates complying with NACE MR0103 & NACE MR0175
  • Welding Procedure Specification / Procedure Qualification Record (WPS / PQR)
  • Heat treatment charts
  • Quality Assurance Plan (QAP)
  • Commercial invoice with HS code
  • Form A (GSP) certificate
  • Guarantee letter
  • Fumigation certificates

Frequently Asked Questions About Inconel 718 Pipes & Tubes

What are Inconel 718 pipes and tubes used for?

Inconel 718 pipes and tubes find their application in the high-temperature and high-pressure systems like gas turbine, jet engines, heat exchanger, nuclear reactor, oil and gas equipment, chemical plant, and power generation systems.

Are Inconel 718 pipes available in seamless and welded forms?

Yes. Inconel 718 pipe and tubes are offered in either seamless, welded, ERW, redrawn, and cold-drawn types based on the application and requirements of such standards as ASTM B163, B516, AMS 5589 & 5590.

What standards are Inconel 718 pipes and tubes manufactured to?

Other typical standards are ASTM B163 / B516, AMS 5589 / 5590, ASME SB163, DIN 17751 and API specifications. There are also certification bodies such as the NACE, IBR and PED.

What size range is available for Inconel 718 seamless tubes?

The seamless range has options between 0.030 inch up to 1.250 inch OD, wall thickness ranging between 0.003 inch to 0.280 inch and custom lengths such as coiled, straight and even cut-to-size.

Can Inconel 718 tubes be used in heat exchanger and condenser applications?

Yes. Due to their high-temperature stability, corrosion resistance, and mechanical strength, Inconel 718 tubes are widely used in heat exchangers, condensers, boilers, and cooling systems.

How resistant are Inconel 718 pipes to corrosion?

Inconel 718 has great pitting, crevice corrosion, stress corrosion cracking, oxidative, and acid, chloride and sulfide attack resistance. This renders them suitable in hostile operating conditions.

Is custom cutting available for Inconel 718 pipes and tubes?

Yes. Depending on the needs, the suppliers may supply cut-to-length tubes, custom OD/ID, special tempers, and custom surface finishes.

What is the working temperature of Inconel 718 pipes?

Inconel 718 is useful in the range of -423F to 1300F (-253C to 704C) and in some applications is resistant to oxidation even up to 1800F (1154C).

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