Alloy 400 Tube

Austenitic / Duplex Steel / Nickel Alloy / Cobalt Alloy

ASTM B165 Alloy 400 Nickel Alloy Seamless Tube

NP-3-0001

MTSCO is an international supplier specializing in piping systems made of stainless steel, duplex steel, and nickel alloys. Since entering the industrial metals sector in 2006, we have consistently served global industrial projects across industries such as chemicals, energy equipment, pressure equipment, and seawater desalination.

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ASTM B165 Alloy 400 Nickel Alloy Seamless Tube

ASTM B165 Nickel Alloy 400 UNS N04400 Seamless Tube for Marine Applications


Specification Of Alloy 400 Seamless Tube

ItemSpecification
Material GradeAlloy 400 / Monel 400 / UNS N04400
Product TypeNickel Alloy Seamless Tube
StandardASTM B165 / ASME SB165 / As Required
Size RangeOD 3.18mm–38mm, WT 0.5mm–3mm, Length ≤30m
ProcessCold Drawn / Annealed
SurfaceBright Annealed / Polished / As Required
InspectionAppearance, Dimension, PMI, UT, ET, Hydrostatic Test, Mechanical Test, Chemical Analysis
CertificatesISO / PED / NORSOK M650 Available / As Required
PackageEnd Protection / Woven Bags / Wooden Cases / As Required
ApplicationMarine Service, Chemical Processing, Seawater System, Heat Exchanger, Corrosion Resistant Tubing


About MTSCO

MTSCO is an international supplier specializing in piping systems made of stainless steel, duplex steel, and nickel alloys. Since entering the industrial metals sector in 2006, we have consistently served global industrial projects across industries such as chemicals, energy equipment, pressure equipment, and seawater desalination.

Our partner manufacturing facilities possess 35 years of experience in piping production, enabling MTSCO to provide comprehensive supply solutions that include pipes, tubes, fittings, flanges, and related metal products. For complex, multi-specification international orders, MTSCO assists clients in standardizing specifications, materials, packaging, and shipping schedules. We help reduce the communication costs associated with multi-vendor procurement and provide support regarding project documentation, quality audits, and sustainable supply chain requirements.


Product Advantages

· Authoritative Certifications & Consistent Quality
MTSCO holds international certifications such as ISO and PED and operates a mature, stable production system. We have successfully passed numerous factory audits conducted by global clients, consistently earning their trust.

· Premium Raw Materials
All raw materials are sourced from renowned steel mills—such as Tsingshan, Fukai, and Yongxing—ensuring stable, reliable chemical composition and mechanical properties, thereby guaranteeing product quality at the source.

· End-to-End Quality Traceability System
Products undergo 100% inspection, with complete inspection records and on-site photos stored in our internal system to ensure full-process traceability.

· Professional Technical Support & Project Experience
We provide comprehensive engineering documentation and technical support to facilitate the smooth progress of client projects; MTSCO has accumulated extensive application experience through collaborations with globally renowned clients.


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Chemical Composition Of Alloy 400 Seamless Tube

GradeSi maxMn maxNiCu maxFe max
Alloy 400/N0440012≥6328-343


Physical Property Of Alloy 400 Seamless Tube

GradePhysical Property
Y.ST.SEL.
Alloy 400/N04400≥170≥480≥35


FAQ

Q1: Can these be purchased together with fittings and flanges?
A1: Yes. MTSCO offers integrated supply solutions for pipes, tubes, fittings, flanges, and plates, allowing clients to standardize materials, specifications, packaging, and shipping arrangements.


Q2: What environments are Monel 400 seamless tubes suitable for?
A2: Monel 400 is commonly used in seawater, brine, chemical media, and certain acidic or alkaline environments. Specific suitability should be confirmed based on media composition, temperature, pressure, and project standards.


Q3: What tests are typically performed on these tubes before shipment?
A3: Standard tests include visual inspection, dimensional checks, PMI, UT, ET, hydrostatic testing, mechanical property testing, and chemical composition analysis. Specific testing procedures may be conducted in accordance with ASTM standards and customer requirements.

Manufacturing Experience

Plant Area

Max Diameter of Welded Pipe

Annealing Furnace Length

What Grades Can We Provide?

Nickel Alloy
NI-MO: N10001,N10665,N10675...
NI-CR-MO: N10276,N06022,N06035,N06455,N06002...
NI-CR-MO-CU: N06030,N06200,N08031,N08825,N08020...
NICR-MO-W: N06230...
NICKEL: N02200,N02201...
NI-CU: N04400,N05500...
NI-CR-FE: N06600,N06601,N06690,N08800,N08810,N08811...
NI-CR-MO-NB: N06625,N07718...

Austenitic
304/L/H/N, 316/L/H/N/Ti, 321/H, 309/H, 310S, 347/H, 317/L, 904L...

Duplex Steel
31803, 32205, 32750, 32760...

Cobalt Alloy
Alloy 188/ UNS R30188, Alloy L-605/ UNS R30605, Alloy S-816, Alloy 6B, UMCo50, FSX-414, MP-159...

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NP-3-0001-ASTM B165 Alloy 400 Nickel Alloy Seamless Tube

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FAQ

1. Can you provide samples?
Of course, We can provide a few sample tubes for you to inspect and experiment.
2. Can we mark our logo on the product?
3. What is your packing?
4. What inspection will you do?
5. What certificates do you have?
6. What is your minimum order quantity(MOQ)?
7. How long is your delivery time?
8. What is your terms of payment?
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