Why Buyers Trust Us For Monel 400 Pipe Supply?

UNS N04400 Certified Heats

Every coil traced to a chemistry-verified Nickel-Copper Alloy 400 heat.

ASTM B165 & B725 Compliant

Seamless and welded runs solution-annealed strictly to standard.

Round, Hex & Hollow Stock

Monel 400 Hexagonal Pipe and hollow sections rolled to drawing.

Heat-Wise MTC 3.1

Chemistry, tensile & hardness data linked to every length shipped.

Fast Ex-Stock Dispatch

Fast-moving NB sizes cut, bevelled & boxed within days.

Monel 400 Pipe Summary

1Pipe Family: Seamless, Welded, ERW, EFW, Hollow & Hexagonal
2Size Coverage: 1/2″ NB to 12″ NB | Sch 10 to XXS
3Standard: ASTM B165, ASTM B725, AMS 4574, UNS N04400
4Werkstoff: WNR / DIN 2.4360, NiCu30Fe Chemistry
5Finish: Hot Finished, Cold Drawn, Bright Annealed, Polished
6Duty: Marine, Seawater, Sour Gas & Acid Process Lines

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Or call our Mumbai desk: +91 22 6743 7134 • Every Monel 400 Pipe ships with heat-wise MTC

Fabricators handling seawater, sour gas or acid duty need dependable piping alloy. Monel 400 Pipe, known as UNS N04400, resists hydrofluoric acid and brine. Alloy 400 Seamless Pipe outlasts ordinary steel tube in reducing chemical service lines. Buyers pick us as a trusted Monel 400 Pipe Supplier in India. As a Monel 400 Pipe Manufacturer in India, we roll seamless runs. We also weld ERW/EFW pipe and machine 400 Monel Hexagonal Pipe bar. Ready stock in common NB sizes ships within the same week. Custom Large Diameter Monel 400 Pipe drawings ship shortly after confirmation.

Mumbai · Nickel-Copper Alloy 400 Pipe & Tube Exporter

Monel 400 Pipe Exporter And Supplier For Marine, & Offshore Piping

High Performance ASTM B165 UNS N04400 Seamless Pipes Supplier in India with MTC. We roll and draw Alloy 400 Seamless Pipe, Monel 400 Welded Pipes and Monel 400 Hexagonal Pipe for marine, chemical and offshore fabricators who cannot risk a pitted joint.

✓ISO 9001:2015
✓NACE MR0175 / ISO 15156
✓ASTM B165 & B725 Certified
✓Mill Test Certificate 3.1
✓Third-Party Inspection Approved

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View Specification

High Performance ASTM B165 UNS N04400 Seamless Pipes Supplier in India with MTC

Monel 400 Pipe Specification

Alloy 400 Seamless Pipe Size

NB: 1/2″ – 12″ (OD 21.3mm – 323.9mm)
Large Diameter Monel 400 Pipe on request
Wall: Sch 10 through Sch XXS
Drawing-based custom lengths

Alloy 400 Seamless Pipe Governing Pipe Standards

ASTM B165 / SB 165 Seamless
ASTM B725 Monel 400 Welded Pipe
AMS 4574 Hot Finished Pipe
MSS SP-95 Fitting Match

WNR 2.4360 Welded Pipe Route

OD Range 21.3mm – 323.9mm
Solution Annealed & Pickled
DIN 2.4360 ERW Pipe Process
Precision Cut & Bevel

Nickelvac® 400 Pipe Finish Options

Hot Rolled Mill Finish
Pickled & Passivated
Mechanically Polished Bore
Alloy 400 Hot Finished Pipe Option

Nickel-Copper Alloy 400 Clad Pipe

UNS N04400 Base Chemistry
Clad & Solid Options On Request
Monel 400 Bush Hex Pipe Sections
Custom ASTM B165 Drawing Match

Werkstoff NR. 2.4360 ERW Pipe Test Coverage

PMI Testing On Every Heat
Corrosion Test (ASTM G28)
Radiography & Ultrasonic Test
Third-Party Inspection Available

AMS 4574 Hot Finished Pipe Grade Family

AMS 4574 sets the aerospace-grade hot finished route; below is the wider Monel Grade 400 pipe family we stock.

Monel Grade 400 Pipe

UNS N04400

Widest corrosion resistance, most requested pipe grade

AMS 4574 Route

Hot Finished

Aerospace & defence spec hot-worked pipe stock

WNR 2.4360

NiCu30Fe

European Werkstoff designation for Monel 400 pipe

Nickelvac® 400

Trade Grade

Commercially identical chemistry marketed under trade name

Get Nickel Alloy 400 SMLS Pipes as per ASTM B165/ SB 165 Standards for Marine & Chemical Piping

Monel 400 Pipe Equivalent Grades

ASTM / UNS (USA)

ASTM B165 & ASTM B725 Monel 400 Seamless Pipes
ASTM B725 Welded Pipe Reference
UNS N04400
AMS 4574 Hot Finished Pipe

DIN / WNr (Germany)

WNR 2.4360 Welded Pipe
DIN 2.4360 ERW Pipe
WERKSTOFF NR. 2.4360 Pipe (Seam Welded)
NiCu30Fe Base Chemistry

Trade / Registered Names

Monel ® 400 Pipes (Registered Trade Name)
Nickelvac® 400 Seamless Pipe
Often searched as Alloy 400 Pipe

ASTM B725 Monel 400 Pipe Dimensions

Smallest NB

1/2″ NB

OD 21.3mm reference size

Largest NB

12″ NB

OD 323.9mm, large diameter option

Wall Range

Sch 10-XXS

Alloy 400 Round Pipe wall coverage

Length

Up To 6.5m

Random or fixed length on request

Nickel Alloy 400 Pipe Thickness & Schedule Chart

NB Size Vs Wall Thickness By Schedule (mm) – Reference Values
OD (mm)	NB (Inch)	Sch XXS	Sch 80	Sch 40	Sch 10
21.30	1/2″	7.47	3.73	2.77	2.11
33.40	1″	9.09	4.55	3.38	2.77
48.30	1.1/2″	10.15	5.08	3.68	2.77
60.30	2″	11.07	5.54	3.91	2.77
114.30	4″	17.12	8.56	6.02	3.05
168.30	6″	21.95	10.97	7.11	3.40
219.10	8″	22.23	12.70	8.18	3.76

Is ASTM B165 UNS N04400 Seamless Pipes Magnetic?

Non-Magnetic By Design

Solid-solution Monel 400 Pipe stays non-magnetic through normal service

Cold Work Exception

Heavy cold drawing may raise a thin removable magnetic film

Chosen For Sensor Lines

Preferred near compass, survey or MRI-adjacent equipment

HSN Code Of Monel Grade 400 Pipe

Product

Monel 400 Pipe

Nickel-Copper alloy tube / pipe

HSN Code

7507 1200

Nickel alloy pipe & tube fittings heading

GST Rate

18%

Standard rate on nickel alloy pipe supply

Testing Methods For Alloy 400 Seamless Pipe

Every genuine Monel 400 Pipe Supplier in India perform quality testing before dispatch.

PMI Testing

Positive Material Identification confirms Ni & Cu ratio per heat

Pitting Corrosion Test

ASTM G28 exposure confirms pitting & intergranular resistance

Radiography (RT) & UT

Weld seam checked for porosity, inclusion or lamination

Hydrostatic Pressure Test

Every length pressure-tested for a leak-free weld and body

Flattening & Flaring Test

Confirms ductility of welded and ERW seam per ASTM B725

Dimensional Inspection

OD, wall & length checked against drawing on every lot

Need A Custom Monel 400 Pipe Wall Matched?Share your NB, OD & schedule list – get a factory-price quote within 24 hours.

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Various Types Of Monel 400 Pipe We Export

As an active exporter of Monel piping, we stock every pipe style used across marine and process duty.

UNS N04400 Welded Pipe

ASTM B725

400 Monel Hexagonal Pipe

Custom Drawing

Monel 400 Rectangle Pipes

ASME SB725

Monel 400 ERW Pipes

Fast Delivery

Monel 400 EFW Pipes

Large NB

Monel 400 Hollow Pipe

Structural / Custom

Alloy 400 Seamless Pipe

ASTM B165

Alloy 400 Round Pipe

Hot / Cold Finished

Weekly Delivery Of Monel 400 Pipe In Below Countries

Export To	Continent	Port	Shipping Time
USA	North America	Port of Los Angeles	33-47 Days
UAE	Asia	Port of Shanghai	20-25 Days
Germany	Europe	Port of Rotterdam	12 Days

Monel 400 Pipe Weight Chart (Kg/Meter)

Approximate Sch 40 running weight – confirm exact figure against your mill test certificate.

2″ NB – Sch 40

~6.1 kg/m

OD 60.3mm, wall 3.91mm

4″ NB – Sch 40

~18.0 kg/m

OD 114.3mm, wall 6.02mm

6″ NB – Sch 40

~31.6 kg/m

OD 168.3mm, wall 7.11mm

8″ NB – Sch 40

~47.6 kg/m

OD 219.1mm, wall 8.18mm

Pressure Rating Of Monel 400 Seamless Pipe

Barlow’s Formula Basis

P = 2 × S × t ÷ D sets the theoretical allowable pressure

Wall Schedule Driven

Sch 10 to XXS wall directly raises the safe working pressure

ASME B16.5 Flange Class

Rated from Class 150 to Class 1500 by flange group

Temperature De-Rating

Allowable pressure falls gradually as design temperature climbs

Need Weight Confirmed For Your Full Order List?Send NB, schedule & length – we return a signed weight sheet same day.

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Monthly Delivery Of Monel 400 Pipe In Below Countries

Export To	Continent	Port	Shipping Time
Malaysia	Asia	Port of Singapore	15-50 Days
Brazil	South America	Port of Itaqui	25-39 Days
Singapore	Asia	Port Klang	7-14 Days

Chemical Composition Of UNS N04400 Pipe

Reference chemistry for Monel 400 Pipe as per ASTM B165 / B725.

Nickel (Ni)Balance

63.0 Min

Copper (Cu)

28.0-34.0%

Iron (Fe)

2.5% Max

Manganese (Mn)

2.0% Max

Carbon (C)

0.3% Max

Silicon (Si)

0.5% Max

Sulphur (S)

0.024% Max

Mechanical Properties Of UNS N04400 Welded Pipe

Tensile Strength

≥ 480 MPa

70 ksi Min, Annealed

Yield Strength (0.2%)

≥ 170 MPa

25 ksi Min, Annealed

Elongation

≥ 35%

High Ductility

Hardness (Max)

≤ 100 HRB

Hot Finished / Annealed

Need A Certified Tensile & Hardness Report?Send size, quantity & standard for a free document review.

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Test Certification Offered With Monel 400 Welded Pipes

Mill Test Certificate 3.1

Chemistry, hardness & tensile results traced to heat number

Every Order

PMI Test Report

Positive Material Identification confirming Ni & Cu content

On Request

Corrosion Test Report

ASTM G28 pitting & intergranular results on request

On Request

Radiography (RT) Report

Weld seam film record for welded & ERW pipe orders

Welded / ERW

Certificate Of Origin

For customs clearance & import duty processing

Export Orders

Need A Third-Party Witnessed Test Certificate?We coordinate SGS, Bureau Veritas or TUV inspection on request.

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ASTM B165 UNS N04400 Seamless Pipes Surface Finish

Alloy 400 Hot Finished Pipe

Hot-worked mill finish for larger diameter structural runs

Bright Annealed

Bright finish straight after the solution annealing cycle

Pickled & Passivated

Acid pickling removes heat scale and restores the oxide film

Mechanically Polished

Mirror-smooth bore for marine & sanitary process lines

Cold Drawn / Cold Finished

Tight-tolerance uniform wall for thin wall & hex pipe

Welding Consumables For Monel 400 Welded Pipe

ERNiCu-7 Filler Wire

AWS A5.14 filler matched to Werkstoff NR. 2.4360 Seam Welded Pipe chemistry

GTAW / TIG

ENiCu-7 Coated Electrode

Used for manual SMAW repair on Monel 400 Welded Pipes

SMAW

No Filler – DIN 2.4360 ERW Pipe

Autogenous resistance seam, no consumable required

ERW Process

Post-Weld Stress Relief

Restores full corrosion resistance in the weld heat-affected zone

Every Weld

Monel 400 Pipe Welding Procedure

Follow a qualified WPS to keep the weld zone as corrosion-resistant as the parent Monel 400 Pipe.

Joint Cleaning

Degrease and wire-brush the bevel to remove oil, oxide and scale

Root Pass (GTAW)

TIG root with ERNiCu-7 filler under argon purge for full penetration

Fill & Cap Pass

Low heat input, stringer beads to limit distortion and cracking risk

Interpass Control

Keep interpass temperature low so alloy chemistry stays stable

Post-Weld Inspection

Visual, RT or dye-penetrant check confirms a sound, defect-free seam

Monel 400 Vs Monel K-500 Pipe – Which To Choose?

Monel 400 Pipe

Solid-solution Ni-Cu base, easy to fabricate
Excellent seawater & hydrofluoric acid resistance
Lower cost, wider ready-stock availability
Best for general marine & process piping

Monel K-500 Pipe

Age-hardened with Al & Ti additions
Up to 3x yield & 2x tensile strength of 400
Higher cost, longer lead time on age-harden lots
Best for shafts, fasteners & high-load parts

Need An Exact Pressure Rating Certificate?Send OD, wall thickness & design temperature – we calculate and confirm.

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How To Identify A Genuine ASTM B725 Monel 400 Pipe?

Ask For Heat-Wise MTC 3.1

Certificate must show chemistry, tensile & heat number matching the pipe marking

Step 1

Request PMI Spot Verification

Ni & Cu reading on the pipe body must match the MTC values

Step 2

Check End-Stamp Markings

Grade, standard, heat number & manufacturer logo should be die-stamped

Step 3

Verify Third-Party Inspection

SGS, BV or TUV report confirms independent test results

Step 4

Monel 400 Seamless Pipe Application

Reach out to our export desk, already shipping into these process sectors every month.

Marine Monel 400 Piping & Shafting

Seawater & Desalination Piping

Chemical & Hydrofluoric Acid Lines

Sour Gas & Refinery Pipelines

Exhaust & Automotive Routing

Pulp & Paper Bleach Circuits

Power Plant Feedwater Piping

Valve & Pump Trim Piping

Not Sure Which Monel 400 Pipe Type Fits Your Line?Share your process fluid & temperature – we confirm the right pipe grade.

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Packing & Export Documentation For Monel 400 Pipe

Wooden Crate / Bundle Packing

End Caps To Prevent Bore Damage

Packing List, Invoice & COO

FCL / LCL Sea & Air Freight

Frequently Asked Questions

What is the Monel 400 pipe price per kilogram?

Price depends on grade, size, wall thickness and quantity – share specs for an exact rate.

What UNS N04400 Monel 400 pipe sizes do you keep in stock?

Available from 1/2 inch to 12 inch NPS, Schedule 10 through XXS wall thickness.

Is DIN 2.4360 Monel 400 pipe resistant to seawater corrosion?

Yes, its Nickel-Copper matrix resists seawater, brine and hydrofluoric acid attack strongly.

Which standard governs Alloy 400 seamless pipe manufacture?

ASTM B165 governs seamless Monel 400 pipe; ASTM B725 covers welded and ERW sizing.

Can Monel 400 welded pipe handle chemical processing duty?

Yes, solution-annealed welded pipe suits acid, alkali and sour gas processing lines reliably.

Explore Nearby Locations for the Quickest Delivery Options

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Ethiopia	Zambia	Ghana	Gabon	Morocco
New South Wales	Mozambique	Egypt	Tunisia	–