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Monel Pipes & Tubes: Monel Seamless Pipes Supplier & Exporter

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Kalpataru Piping is a trusted manufacturer, supplier, and exporter of Monel pipes and Monel tubes, offering premium-quality Monel products in seamless and welded forms for critical industrial applications. We are a reputable supplier of Monel tubing and therefore have all sizes, schedules, and grades in stock and supply as required to both the standard and custom projects around the world. Our Monel pipe material has been acclaimed to have a high level of resistance to corrosion of sea water, acids, alkalis and high temperatures. We also provide Monel pipes and tubes that meet ASTM, ASME and other international standards, therefore they are reliable and possess a long service life. Products are strictly checked in terms of quality to achieve maximum quality.

We are an established Monel seamless Pipe exporter, which is providing pipes that are produced as per the ASTM B725 Monel seamless pipes requirements. These pipes are manufactured through sophisticated process in order to guarantee high pressure resistance, uniformity in wall thickness as well as good mechanical properties. Available in SCH, 10, 20, 40, 80, 160, and XXS, plain end, beveled end or custom finish.

Monel seamless pipes are ideal for:

  • Services of high pressure and high temperature.
  • Water and sub-sea conditions.
  • Chemical and petrochemical processing.
  • Gas exchangers, condensers and pipes.

Kalpataru Piping is also a trustworthy supplier of Monel Welded Pipes and the ERW and EFW pipes offered by this manufacturer are of international quality. The Monel welded pipe range has great dimensional precision, finely polished surface and standard performance. There are round, square, rectangular as well as hollow shapes.

Monel welded pipes are usually applied in:

  • Oil & gas pipelines
  • Refineries and power plants
  • Low-pressure and structural applications.
  • Manufactured and custom made piping systems.
Request A Quote on Monel Seamless Pipes & Tubes

Introduction to Monel Pipes & Tubes

The products based on Monel alloys are quite corrosion-resistant, nickel-alloy materials that come in various grades to be used in the harsh realities of industrial life. The Monel alloy products are common in the Aerospace Industry, marine engineering, oil and gas, and chemical processing industry. In the hydrocarbon processing, the ASME SB 165 seamless Monel pipes are subjected to exothermic reactions which produce heat, water and carbon dioxide. These three environments may easily wear out traditional steel. Monel alloys also have copper and this increases the resistance to corrosion especially under environments that involve alkalis, hydrofluoric acid, and sulfuric acid. This renders Monel ERW pipes, hollow pipes and hexagonal pipes to be applicable in high pressure transmission systems. The monel pipes and tubes are also known to maintain excellent mechanical qualities at low temperatures and they get stronger and hard with little or no loss of ductility. Different grades of Monel tubes are easily worked by hot and cold working, machining and welding such as Alloy 400 and K-500. In order to get a better idea of performance features of this alloy, visit our in-depth manual on Monel 400 material properties and applications. Long service life necessitates proper fabrication. To have best practices and technical recommendations, please check our expert guide on Monel 400 welding which discusses the heat control, filler and the welding method.

Monel Alloy Pipe Grades

Monel K500 Pipes And Monel K500 Tubes

Monel 400 Pipes And Monel 400 Tubes

Enquire Now

Specification of Monel Pipe & Tubes

Monel Alloy Pipe Specification

ASTM B 165 ASME SB 165 / ASTM B 725 ASME SB 725

Our Presence

USA, Canada, Australia, UK, Malaysia, Poland, Iran, Italy, Singapore, UAE

Monel Alloy Seamless Pipe size

4 to 219mm W. T.: 0.5 to 20mm

Monel Welded Pipe size

5.0 mm – 1219.2 mm

Test
  • Hardness Test
  • Flattening Test
  • Pitting Resistance Test
  • Chemical Analysis – Spectro Analysis
  • Micro and MacroTest
  • Flaring Test
  • Intergranular Corrosion (IGC) Test
  • Mechanical Testing Such as Tensile of Area
  • Positive Material Identification – PMI Testing

Monel Pipe Schedule

SCH5, SCH10, SCH40, STD, SCH80, SCH160

Monel Pipe Form

Hollow, Square, Round, Rectangular , Straight Pipes, Hydraulic Etc.

Monel Alloy Pipe End

Plain End, Beveled End, Treaded.

Monel Alloy EFW Pipe size

5.0 mm – 1219.2 mm

Origin

European, Japanese, Korean, US, Russian, Indian (Strictly No Chinese Material)

Marking

All Monel Alloy Pipes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.)

Manufacturers of Monel Pipe
  • Monel Alloy Pipe make Sumitomo Metals, Japan
  • Monel Alloy Pipe make Tubacex Tubos Inoxidables S.A., Spain
  • Monel Seamless Pipe make Seah Steel Corporation, Korea
  • Monel Pipe make Sanyo Special Steel, Japan
  • Monel Pipe make Nippon Steel Corporation, Japan
  • Monel Alloy Pipe make Kobe Special Tube, Japan
  • Monel Alloy Pipe make Schoeller Bleckmann, Austria

Monel Alloy Pipe Finish

Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF

Monel Pipe Length

Single Random, Double Random & Cut Length.

Material Test Certificates (MTC)

Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2

Specialized in

Large Diameter Monel Alloy Pipe

We can also cut, thread, and groove Monel Pipes to meet your specifications.

Monel Seamless Pipe Sizes

OD (mm)

Pipe WT(mm)

Sch

219.08

8.18

40S

88.90

7.62

80S

48.26

5.08

80S

60.33

2.77

10S

42.16

3.56

40S

114.30

3.05

10S

42.16

4.85

80S

73.03

3.05

10S

73.03

5.16

40S

26.67

3.91

80S

42.16

2.77

10S

114.30

6.02

40S

33.40

6.352

160

42.16

6.352

160

33.40

2.77

10S

48.26

3.68

40S

60.33

5.54

80S

21.34

2.11

10S

60.33

8.742

160

73.03

7.01

80S

17.15

2.31

40S

26.67

2.87

40S

101.60

8.08

80S

21.34

3.73

80S

168.28

10.97

80S

33.40

3.38

40S

88.90

3.05

10S

13.72

3.02

80S

Types of Monel Pipes

Monel Alloy Clad Pipe

Monel Alloy Clad Pipe

Monel Alloy Electropolished Pipe

Monel Alloy Electropolished Pipe

Monel Alloy Exhaust Pipe

Monel Alloy Exhaust Pipe

Monel Alloy Round Pipe

Monel Alloy Round Pipe

Monel Hot Finished Pipe

Monel Hot Finished Pipe

Monel Solution Annealed Pipe

Monel Solution Annealed Pipe

Technical Datas for Monel Pipes & Tubes

Chemical Composition

Grades

Fe

Si

Al

C

Mn

Ni

S

Cu

Monel 400

1.0 – 2.5

0.5 max

0.50 max

0.3 max

2.0 max

63.0 min

0.02 max

28.0 – 34.0

Monel K500

05 – 2

0.5 max

2.3 – 3.15

0.25 max

1.5 max

63.0 min

0.010 max

27.0 – 33.0

Grades

Yield Strength (0.2%Offset)

Tensile Strength Psi, Mpa

Elongation

Monel 400

240 Mpa

80,000, 550

40 %

Monel K500

790 Mpa

1,60,000, 1100

20 %

Equivalent Grades

STANDARD

UNS

WERKSTOFF NR.

EN

JIS

BS

AFNOR

GOST

Monel 400

N04400

2.4360

NiCu30Fe

NW 4400

NA 13

NU-30M

МНЖМц 28-2,5-1,5

Monel K500

N05500

2.4375

–

–

–

–

–

Physical Properties

Grades

Density

Melting Point

Monel 400

8.8 g/cm3

1350 °C (2460 °F)

Monel K500

8.44 g/cm3

1350 °C (2460 °F)

Monel Pipe Pressure Rating

Alloy 400 Pipe Pressure Rating

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

Size Ranges, Dimensional Specification for Monel Tubes

Dimensions chart of ASTM B725 Monel Welded Pipe

Monel Pipe OD

mm

Pipe WT

mm

in.

Sch

Kg/m

13.72

1.65

1/4

10S

0.50

13.72

2.24

1/4

40S

0.64

13.72

3.02

1/4

80S

0.81

17.15

1.65

3/8

10S

0.64

17.15

2.31

3/8

40S

0.86

17.15

3.20

3/8

80S

1.12

21.34

2.11

1/2

10S

1.02

21.34

2.77

1/2

40S

1.29

21.34

3.73

1/2

80S

1.65

26.67

2.11

3/4

10S

1.30

26.67

2.87

3/4

40S

1.71

26.67

3.91

3/4

80S

2.23

33.40

2.77

1

10S

2.13

33.40

3.38

1

40S

2.54

33.40

4.55

1

80S

3.29

33.40

6.352)

1

160

4.30

42.16

2.77

1¼

10S

2.73

42.16

3.56

1¼

40S

3.44

42.16

4.85

1¼

80S

4.53

42.16

6.352)

1¼

160

5.69

48.26

2.77

1½

10S

3.16

48.26

3.68

1½

40S

4.11

48.26

5.08

1½

80S

5.49

60.33

2.77

2

10S

3.99

60.33

3.91

2

40S

5.52

60.33

5.54

2

80S

7.60

60.33

8.742)

2

160

11.29

73.03

3.05

2½

10S

5.35

73.03

5.16

2½

40S

8.77

73.03

7.01

2½

80S

11.59

88.90

3.05

3

10S

6.56

88.90

5.49

3

40S

11.47

88.90

7.62

3

80S

15.51

88.90

11.132)

3

160

21.67

101.60

3.05

3½

10S

7.53

101.60

5.74

3½

40S

13.78

101.60

8.08

3½

80S

18.92

114.30

3.05

4

10S

8.50

114.30

6.02

4

40S

16.32

114.30

8.56

4

80S

22.67

114.30

13.492)

4

160

34.05

141.30

6.55

5

40S

22.10

141.30

9.53

5

80S

31.44

141.30

15.882)

5

160

49.87

168.28

3.4

6

10S

14.04

168.28

7.11

6

40S

28.69

168.28

10.97

6

80S

43.21

168.28

14.27

6

120

54.75

168.28

18.262)

6

160

68.59

219.08

8.18

8

40S

43.20

219.08

12.7

8

80S

65.63

219.08

18.23

8

120

91.30

219.08

23.012)

8

160

112.97

Weight Chart of Monel Alloy 400 Seamless Pipe

The weight of Monel Alloy 400 seamless pipes varies based on outside diameter, wall thickness, and schedule. Accurate pipe weight calculation is essential for material planning, load calculations, transportation, and cost estimation in marine, oil & gas, and chemical processing projects.

Instead of relying only on static charts, using a pipe & tube weight calculator helps you get precise and quick results for different sizes and schedules of Monel 400 pipes.

NPS

Wall Thickness

Outside Diameter

Weight

Weight

in

mm

in

mm

Lb/ft

kg/Mtr

1/2″

0.109

2.769

0.840

21

0.851

1.268

12″

0.188

4.775

12.750

324

25.222

37.570

3/4″

0.113

2.870

1.050

27

1.131

1.684

18″

0.219

5.563

18.000

457

41.588

61.948

1″

0.133

3.378

1.315

33

1.679

2.501

42″

0.312

7.925

42.000

1067

138.911

206.914

1 1/4″

0.140

3.556

1.660

42

2.273

3.385

48″

0.375

9.525

48.000

1219

190.738

284.112

4″

0.237

6.020

4.500

114

10.790

16.073

1 1/2″

0.145

3.683

1.900

48

2.718

4.048

14″

0.188

4.775

14.000

356

27.732

41.308

2″

0.154

3.912

2.375

60

3.653

5.441

24″

0.250

6.350

24.000

610

63.413

94.456

2 1/2″

0.203

5.516

2.875

73

5.793

8.629

20″

0.250

6.350

20.000

508

52.733

78.547

3″

0.216

5.486

3.500

89

7.576

11.284

16”

0.188

4.775

16.000

406

21.748

47.290

6″

0.188

4.775

6.625

168

12.924

19.252

30″

0.250

6.350

30.000

762

79.433

118.318

8″

0.188

4.775

8.625

219

16.940

25.233

36″

0.250

6.350

36.000

914

95.453

142.180

10″

0.188

4.775

10.750

273

21.207

31.588

ASTM B165 Monel Pipe Sizes

OD

mm

Pipe WT

mm

in.

Sch

Kg/m

13.72

1.65

1/4

10S

0.50

13.72

2.24

1/4

40S

0.64

13.72

3.02

1/4

80S

0.81

17.15

1.65

3/8

10S

0.64

17.15

2.31

3/8

40S

0.86

17.15

3.20

3/8

80S

1.12

21.34

2.11

1/2

10S

1.02

21.34

2.77

1/2

40S

1.29

21.34

3.73

1/2

80S

1.65

26.67

2.11

3/4

10S

1.30

26.67

2.87

3/4

40S

1.71

26.67

3.91

3/4

80S

2.23

33.40

2.77

1

10S

2.13

33.40

3.38

1

40S

2.54

33.40

4.55

1

80S

3.29

33.40

6.352)

1

160

4.30

42.16

2.77

1¼

10S

2.73

42.16

3.56

1¼

40S

3.44

42.16

4.85

1¼

80S

4.53

42.16

6.352)

1¼

160

5.69

48.26

2.77

1½

10S

3.16

48.26

3.68

1½

40S

4.11

48.26

5.08

1½

80S

5.49

60.33

2.77

2

10S

3.99

60.33

3.91

2

40S

5.52

60.33

5.54

2

80S

7.60

60.33

8.742)

2

160

11.29

73.03

3.05

2½

10S

5.35

73.03

5.16

2½

40S

8.77

73.03

7.01

2½

80S

11.59

88.90

3.05

3

10S

6.56

88.90

5.49

3

40S

11.47

88.90

7.62

3

80S

15.51

88.90

11.132)

3

160

21.67

101.60

3.05

3½

10S

7.53

101.60

5.74

3½

40S

13.78

101.60

8.08

3½

80S

18.92

114.30

3.05

4

10S

8.50

114.30

6.02

4

40S

16.32

114.30

8.56

4

80S

22.67

114.30

13.492)

4

160

34.05

141.30

6.55

5

40S

22.10

141.30

9.53

5

80S

31.44

141.30

15.882)

5

160

49.87

168.28

3.4

6

10S

14.04

168.28

7.11

6

40S

28.69

168.28

10.97

6

80S

43.21

168.28

14.27

6

120

54.75

168.28

18.262)

6

160

68.59

219.08

8.18

8

40S

43.20

219.08

12.7

8

80S

65.63

219.08

18.23

8

120

91.30

219.08

23.012)

8

160

112.97

Monel Alloy Pipe Schedule Chart

1/8″ IPS(.405″O. D.)

3 1/2″ IPS( 4.000″O. D.)

SCH 40, 80

SCH 10, 40, 80, 160, XXH

1/4″ IPS(.540″O. D.)

4″ IPS(4.500″O. D.)

SCH 10, 40, 80

SCH 10, 40, 80, 160, XXH

3/8″ IPS(.675″O. D.)

5″ IPS( 5.563″O. D.)

SCH 10, 40, 80

SCH 10, 40, 80, 160, XXH

1/2″ IPS(.840″O. D.)

6″ IPS(6.625″O. D.)

SCH 5, 10, 40, 80, 160, XXH

SCH 5, 10, 40, 80, 120, 160, XXH

3/4″ IPS(1.050″O. D.)

8 ” IPS(8.625″O. D.)

SCH 10, 40, 80, 160, XXH

SCH 5, 10, 40, 80, 120, 160, XXH

1″ IPS:(1.315′O. D.)

10″ IPS(10.750″O. D.)

SCH 5, 10, 40, 80, 160, XXH

SCH 10, 20, 40, 80 (.500), TRUE 80(.500)

1-1/4″ IPS(1.660″O. D.)

12″ IPS(12.750″O. D.)

SCH 10, 40, 80, 160, XXH

SCH 10, 20, 40(.375), TRUE40(.406), SCH80(.500)

1-1/2″ IPS(1.900″O. D.)

14″ IPS(14.000″O. D.)

SCH 10, 40, 80, 160, XXH

SCH10 (.188), SCH40 (.375)

2″ IPS(2.375″O. D.)

16″ IPS(16.000″O. D.)

SCH 10, 40, 80, 160, XXH

SCH10(.188), SCH40(.375)

2 1/2″ IPS(2.875″O. D.)

18″ IPS (18.000″O. D.)

SCH 10, 40, 80, 160, XXH

SCH-40 (.375)

3″ IPS( 3.500″O. D.)

 

SCH 5, 10, 40, 80, 160, XXH

 

Heat & Pressure Properties of Monel Pipes & Tubes

ASTM B165 N04400 Seamless Tube Allowable Pressure

Pipe OD

Allowable Pressure

0.5

1.0

0.6

2.0

0.7

1.8

0.8

2.5

3.0

1.2

1.5

2.2

1.6

3

464

965

567

 

672

 

775

 

 

 

 

 

 

12

 

215

 

464

 

411

169

 

 

262

335

 

360

4

335

723

411

 

491

 

567

 

 

873

 

 

 

22

 

113

 

236

 

211

 

301

369

137

173

262

186

6

 

464

 

 

310

 

360

 

 

567

723

 

775

16

 

158

 

335

 

298

 

430

528

192

244

372

262

8

 

335

 

 

227

 

262

 

 

411

528

 

567

18

 

140

 

294

 

262

 

377

464

169

215

326

230

10

 

262

 

 

 

 

206

 

 

320

411

 

442

25

 

99

 

206

 

184

 

262

320

120

152

228

162

14

 

182

 

389

 

345

 

500

612

222

282

43

  

Annealing Temperature of Monel Tube

Monel Alloy

Annealing Temperature Range (°C)

Annealing Temperature Range (°F)

Monel 400

900 to 1,000

1,650 to 1,832

Monel K500

1,030 to 1,080

1,886 to 1,976

Monel 625

1,050 to 1,150

1,922 to 2,102

Monel 600

1,100 to 1,150

2,012 to 2,102

Monel 500

1,100 to 1,150

2,012 to 2,102

Thermal Properties of Monel Tubing

Monel Grade

Thermal Expansion (10⁻⁶ /°C)

Thermal Conductivity (W/m·K)

Monel 400

13.8

35 – 45

Monel K-500

13.6

50 – 60

Monel 500

15.0

35 – 50

Monel 405

14.0

30 – 40

Monel 404

14.0

30 – 40

Monel Pipe Welding

The welding of monel pipes must be controlled to preserve corrosion resistance and mechanical strength of the alloy. Depending on the size and the use of the pipes, some of the common welding processes applied on Monel pipes are; Gas Tungsten Arc Welding (GTAW/TIG), Gas Metal Arc Welding (GMAW/MIG), Shielded Metal Arc Welding (SMAW) and Submerged Arc Welding (SAW).

The appropriate nickel-based filler metal is critical in order to have strong welds free of cracks. After welding, post-weld heat treatment is not typically necessary with Monel alloys; but, proper pre-weld and post-weld cleaning must be done to ensure that all surface contaminants are eliminated and that weld defects do not occur. Adequate management of the heat input is useful in maintaining the corrosion resistance and structural integrity of the Monel pipe material.

Detailed procedures, filler selection, and best practices Fillerer selection, preparation, welding techniques and inspection standards to use with Monel 400 in industry areas are discussed in our full guide on Monel 400 welding.

Monel Pipes & Tubes Applications

Aerospace Oil & Gas Marine Engineering Chemical Processing Food Processing Electrical Applications

Testing conducted on B165 Monel Alloy Seamless Pipe

  • Intergranular Corrosion (IGC) Test
  • Pitting Resistance Test
  • Micro and MacroTest
  • Flattening Test
  • Positive Material Identification – PMI Testing
  • Chemical Analysis – Spectro Analysis
  • Hardness Test
  • Flaring Test
  • Mechanical Testing Such as Tensile of Area

FAQs on Monel Pipes & Tubes

What is a Monel Pipe?
A Monel pipe is a high performance nickel copper alloy pipe with the property of excellent corrosion resistance, high strength and durability. It also works extremely well under marine, chemical, and oil and gas conditions, particularly where there is an acidic environment and seawater.
What are These Monel Alloy Pipes and their types?
The pipes of Monel alloy are made mostly of nickel and copper with traces of iron and manganese. Monel seamless pipes, Monel welded pipes, Monel ERW pipes, Monel instrument tubing, Monel heat exchanger tubes come in such grades as Monel 400, and Monel K500.
Is Monel the Same as Inconel?
No. Monel is an alloy of nickel and copper whereas Inconel is a nickel and chromium alloy. Monel is best resistant to seawater and acids and Inconel is better in very hot environments and oxidizing conditions.
Hastelloy or Monel: Which Is Better?
Hastelloy (including C-276) has a higher resistance to extreme temperatures and highly poisonous chemicals. Monel 400 however is cheaper and better suited to marine, oil and gas, and moderate conditions of corrosion.

Which is superior, Monel or Stainless Steel?
The marine and chemical applications of Monel surpass stainless steel because the material has excellent corrosion resistance. Stainless steel is cheaper and more adaptable but it is not as good as Monel in severe climates with a lot of chloride.

What Is Monel Tubing Instrument?
The Monel instrument tubing is employed to shield the vulnerable instrumentation and controls in oil and gas, offshore, and nuclear power plants. It is very resistant to corrosion, pressure and sub-sea environment, which means that it is very reliable in the long term.
What Kind of Corrosion is Monel 400 Pipe Resistant to?
Monel 400 alloy pipes are resistant to:
Pitting corrosion
Crevice corrosion
Stress corrosion cracking
Galvanic corrosion
Oxidation
General corrosion
Intergranular corrosion
Monel 400 vs. Inconel 625 Pipes: What Is the Difference?
The Monel 400 pipes are highly designed in maritime as well as chemical applications with excellent corrosive protection and low cost. Inconel 625 pipes possess high temperature strength and resistance to oxidation and are therefore used in aerospace and power plants.

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