Inconel 825 Welded Pipes | ASTM B705 Alloy 825 Welded Pipe Supplier

Table of Content

Overview of Incoloy 825 Welded Pipes
Types of Incoloy 825 Welded Pipes
Incoloy 825 Welded vs. Seamless
Specifications of Incoloy 825 Welded Pipes
Incoloy 825 Welded Pipe Equivalent Grades
Chemical Composition of UNS N08825
Alloy 825 Incoloy Welded Pipes Mechanical Properties
Testing & Inspection of Inconel 825 Welded Pipes
Applicable Standards
Applications of Incoloy 825 Welded Pipes

Overview of Incoloy 825 Welded Pipes

Incoloy 825 Welded Pipes (ASTM B705, UNS N08825, W.NR 2.4858) are produced by forming a flat strip of nickel-iron-chromium alloy into a tubular shape and joining the longitudinal edges by a continuous welding process. The result is a pipe with a well-defined seam that, combined with modern automated welding technology and full post-weld annealing, delivers consistent performance in a wide variety of corrosive service environments.

Compared to seamless pipes, Incoloy 825 welded pipes offer tighter dimensional tolerances in OD and wall thickness, are more economical to produce in equivalent quantities, and are the preferred choice for applications where moderate pressure ratings are acceptable. The automated welding process used without filler metal — maintains alloy uniformity across the seam, while the mandatory annealing cycle restores the corrosion resistance of the heat-affected zone.

Our ASTM B705 UNS N08825 welded pipes are supplied in full compliance with international standards including ASME SB705, DIN 17751, ISO 6207, and VdTÜV 432. Each pipe is backed by EN 10204 3.1 Mill Test Certificates and undergoes comprehensive non-destructive testing including hydrostatic, eddy current, and ultrasonic examination before despatch.

Key Advantage of Welded Construction

Incoloy 825 welded pipes provide tighter OD/WT tolerances than seamless pipe and are produced in a wider range of large diameters up to 914.4 mm — making them indispensable for large-bore applications in desalination, offshore pipelines, and chemical plant construction where seamless production is impractical or cost-prohibitive.

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Types of Incoloy 825 Welded Pipes

Solitaire Overseas supplies Incoloy 825 welded pipes manufactured using three primary welding processes, each suited to different diameter ranges, wall thicknesses, and service conditions:

ERW — Electric Resistance Welded

Produced by passing high-frequency electrical current through the pipe seam, generating the heat required to fuse the edges without any filler metal. Suitable for smaller diameter pipes up to 24" with tighter dimensional control. Most cost-effective welded option for high-volume production runs.

EFW — Electric Fusion Welded

Formed by continuously welding the seam of a coiled strip using an electric arc fusion process. Allows production of a wide range of diameters and wall thicknesses with excellent seam integrity. Well-suited for chemical process piping, pollution control equipment, and fluid handling systems.

LSAW — Longitudinal Submerged Arc Welded

Used for large-diameter, heavy-wall pipes formed from plate that is bent to shape and welded under a submerged arc flux. Ideal for large-bore pipeline applications in offshore, desalination, and petrochemical plant construction where diameters exceed typical ERW/EFW capabilities.

Incoloy 825 Welded vs. Seamless

Understanding the differences helps you select the right pipe type for your application and budget:

Incoloy 825 Welded Pipe — Advantages	Incoloy 825 Seamless Pipe — Best When
Tighter dimensional tolerances on OD and wall thickness	Maximum pressure integrity with zero seam risk required
More cost-effective in equivalent quantities and large diameters	Sour gas (H&sub2;S) service per NACE MR0175 mandatory
Available in very large diameters up to 914.4 mm (36")	Nuclear or critical process applications with strict codes
Uniform surface finish and consistent OD throughout length	High-pressure cycling or shock loading conditions
Suitable for moderate-pressure and general fluid service	Higher pressure ratings at smaller diameters required
Faster lead times for standard sizes from stock	ASME B31.3 Class 1 or equivalent pressure piping systems

Specifications of Incoloy 825 Welded Pipes

Specification	Details
Standard	ASTM B705, B514, B704, B775 / ASME SB705, SB514, SB704, SB775
UNS Designation	N08825
Werkstoff Nr.	2.4858
Dimension Standard	ANSI B36.19, ANSI B36.19M, ANSI B36.10
Outer Diameter	6.00 mm – 914.4 mm (up to 36")
Wall Thickness	0.3 mm – 50 mm
Pipe Size	1/8" NB – 36" NB (sizes to 24" ex-stock)
Schedule	SCH 5, SCH 5S, SCH 10, SCH 10S, SCH 20, SCH 30, SCH 40, SCH 40S, STD, SCH 60, SCH 80, SCH 80S, SCH 100, SCH 120, SCH 160, XS, XXS
Weld Type	ERW (Electric Resistance Welded), EFW (Electric Fusion Welded), LSAW, DSAW
Form	Round, Square, Rectangular
Length	Single Random (SRL), Double Random (DRL), Fixed / Cut-to-Length
End Finish	Plain End (PE), Beveled End (BE), Threaded & Coupled
Supply Condition	Annealed, Cold Worked (as per ASTM B705)
Surface Finish	As Welded, Bright Annealed, Pickled & Passivated, Electropolished
Documentation	EN 10204 3.1 / 3.2, Chemical Report, Mechanical Report, NDT Reports, PMI, Third Party Inspection

Incoloy 825 Welded Pipe Equivalent Grades

UNS Designation & International Equivalent for Inconel 825 Welded Pipes:

Type	UNS	WNR.	AFNOR	EN	JIS	BS	GOST
Incoloy 825	N08825	2.4858	NFE30C20DUM	NiCr21Mo	NCF 825	NA 16	ЭП703

Chemical Composition of UNS N08825

Grade	C	Mn	Si	S	Cr	Ni
Incoloy 825	0.05 max	1.00 max	0.5 max	0.03 max	19.50 – 23.50	38.00 – 46.00

Alloy 825 Incoloy Welded Pipes Mechanical Properties

Property	ASTM B705 Requirement	Typical Value	Unit
Tensile Strength (min.)	586 MPa (85 ksi)	620 MPa	MPa
Yield Strength 0.2% (min.)	207 MPa (30 ksi)	275 MPa	MPa
Elongation (min.)	30%	35%	%
Hardness (max.)	200 HB / 93 HRB	170 HB	HB
Density	—	8.14	g/cm³
Melting Range	—	1300–1400	°C
Specific Heat Capacity (21°C)	—	440	J/kg·K
Thermal Conductivity (21°C)	—	11.1	W/m·K
Electrical Resistivity	—	1.13	μΩ·m
Modulus of Elasticity	—	196	GPa

Testing & Inspection of Inconel 825 Welded Pipes

All Incoloy 825 welded pipes supplied by Solitaire Overseas undergo rigorous testing as per ASTM B705 and relevant international standards. The following non-destructive and destructive tests are performed on every batch:

Hydrostatic Test
Eddy Current Test
Ultrasonic Test
Pneumatic / Leak Test
Radiography Test (RT)
Transverse Guided Bend Test
Tensile Strength Test
Yield Strength Test
Elongation Test
Hardness Test
PMI (XRF / Spectrograph)
Chemical Analysis
Visual Inspection
Dimensional Inspection
Third Party Inspection
NABL Approved Lab Reports

Applicable Standards

Our Incoloy 825 welded pipes are manufactured and supplied in compliance with the following international specifications:

ASTM B705 ASME SB705 ASTM B514 ASME SB514 ASTM B704 ASME SB704 ASTM B775 ASME SB775 ASTM B751 DIN 17751 ISO 6207 VdTV 432 ANSI B36.19 ANSI B36.10 NACE MR0175 EN 10204 3.1

Applications of Incoloy 825 Welded Pipes

The excellent corrosion resistance, cost efficiency, and wide diameter availability of ASTM B705 UNS N08825 welded pipes make them a primary choice across these industries:

Chemical Processing: Acid production plants, sulfuric & phosphoric acid handling, pickling operations, chemical storage and transfer systems
Oil & Gas: Wellhead piping, production headers, gas gathering systems, crude oil handling and surface process equipment
Offshore Platforms: Seawater service lines, large-bore subsea piping, corrosion-resistant process headers on floating production systems
Desalination Plants: Multi-stage flash evaporators, reverse osmosis feed lines, brine disposal systems and heat recovery sections
Pollution Control: Flue gas desulfurization (FGD) scrubbers, stack gas cooling, acid mist arrestors and emission control piping
Power Generation: Condenser water boxes, heat exchanger shells, feed water treatment and flue gas cooling applications
Petrochemical Plants: Process piping, heat exchangers, vessel nozzles and utility piping in hydrocarbon refining environments
Fertilizer & Agro-Chem: Phosphoric acid concentration, urea synthesis plants, nitric acid absorption towers and reactor feed piping
Shipbuilding & Marine: Seawater cooling lines, ballast water treatment piping, marine exhaust ducting and bilge systems
Waste Treatment: Radioactive waste containment and transfer piping, industrial effluent neutralization systems

Get a Custom Quote Now!

As a trusted alloy 825 pipe supplier and exporter, Solitaire Overseas delivers certified Inconel 825 Welded Pipes with competitive pricing, short lead times, and complete documentation support for domestic and international projects.

Fill out the form below or email sales@solitaire-overseas.com for a fast, no-obligation quote on any Incoloy 825 Welded Pipe type or size.