Name: Incoloy Alloy 800 Seamless Pipe | Incoloy 800 Welded Pipes
Brand: Solitaire Overseas

ASTM B407 Inconel 800 Seamless Pipe Manufacturer & Supplier

Solitaire Overseas is a company that specializes in manufacturing and supplying ASTM B407 Inconel 800 Seamless Pipe, which is the best variant of Nickel alloy piping with the best performance in the industrial sector. We manufacture and supply Inconel 800 Welded Pipes as well as Inconel 800 Seamless Pipes in full adherence to regulations in international standards.

Inconel 800 Seamless Pipe (UNS N08800 / W.Nr. 1.4876) is a nickel–iron chromium alloy pipe made without a welded seam, and so has a uniform microstructure, high mechanical strength, and high pressure carrying capacity. It is usually a balanced alloy of 3035 percent nickel and 1923 percent chromium with equal amounts of iron giving it a great resistance against oxidation and carburization as well as high-temperature corrosion.

Our Inconel 800 Welded Pipe is manufactured under the high quality of the ERW and EFW welding process so that it becomes more dimensional, accurate and structurally sound, and is economical, particularly when it comes to large diameter. These are mostly incoloy 800 welded pipes that are used in heat exchangers, process piping systems and furnace parts where fabrication control is necessary.

With over four decades of industry experience, we produce alloy 800 seamless pipe strictly in accordance with ASTM B407, ASTM B514, ASTM B829, ASTM B515, ASTM B775, and ASTM B751 standards. The seamless manufacturing process eliminates weld-related defects and enhances reliability in critical service conditions.

Each Incoloy 800 Seamless Pipe and Inconel 800 Welded Pipe undergoes hydrostatic testing, ultrasonic inspection, eddy-current testing, PMI verification, and dimensional checks to ensure defect-free supply.

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1.4876 Incoloy 800 Seamless & Welded Pipe Specification

The Inconel 800 (W.Nr. 1.4876 / UNS N08800) series is engineered for structural applications requiring high strength and resistance to oxidation and carburization at elevated temperatures. Below is the technical specification for both seamless and welded configurations.

Feature	Technical Specification / Details
Material Grade	Incoloy 800 / UNS N08800 / Werkstoff 1.4876
International Specs	ASTM B407, B514, B829, B515, B775, B751, BS3 3074NA15, ISO 6207, DIN 17459, VdTüV 412 & 434
Standard Bodies	ASME, ASTM, AISI, AMS, JIS, EN, SAE, DIN, NF, TOCT, DS, DTD, GB
Dimensional Specs	ANSI/ ASME B36.10, B36.19, B2.1
Seamless Pipe Size	OD: 4mm to 219mm
Welded / EFW Size	OD: 5.0mm to 1219.2 mm
Wall Thickness (SCH)	SCH 5, 10, 40, 80, 80S, 160, XXS, XS
Manufacturing Tech	Seamless, ERW, EFW, Welded, Fabricated, CDW, LSAW, Seam-Welded, Redrawn
Delivery Condition	Annealed & Pickled, Hot Finished, Polished, Bright Annealed, Cold Drawn
Forms Available	Round, Square, Rectangular

Alloy 800 Seamless Pipe Manufacturing Process

The manufacturing process of Alloy 800 Seamless Pipe begins by heating a solid cylindrical billet. The billet is pierced and elongated over a mandrel to form a hollow shell. Cold drawing or cold rolling is then used to achieve precise dimensions, required wall thickness, and improved surface finish. This controlled process results in a high-strength, defect-free Inconel 800 Seamless Pipe suitable for high-pressure and high-temperature environments.

In contrast, Inconel 800 Welded Pipes are formed from rolled plates or strips and joined using ERW or EFW welding techniques. Post-weld heat treatment and non-destructive testing ensure structural integrity and long-term performance.

Features of Inconel 800 Seamless & Welded Pipes

High-Temperature Strength:
Inconel 800 Pipe boasts off-the-shelf of great mechanical strength and structural integrity even under the extended exposure to the high temperatures and therefore is suitable in the superheater and reheater tubes in power plants.

Oxidation and Carburization Resistance:
The high nickel and chromium content develops a protective oxide layer which does not oxidize and does not absorb carbon at a high temperature. This renders Alloy 800 Seamless Pipe to be applicant in radiant tubes and furnace applications.

Stable Austenitic Structure:
In austenitic microstructure, the same does not have embrittling properties and thus it is stable even at prolonged thermal exposure, providing long term reliability.

Corrosion Resistance:
The chromium alloy increases the resistance to a weak acid and aqueous conditions and sulfur-based atmospheres, which makes Incoloy 800 Seamless Pipe the ideal material in terms of chemical and petrochemical processing.

Good Weldability:
Inconel 800 Seamless Pipe, as well as, Inconel 800 Welded Pipe, can be manufactured by use of common welding techniques without preheating which makes it easier to install and fabricate.

Incoloy 800 UNS N08800 Equivalent Material

The equivalent designation of Inconel 800 Seamless & Welded Pipes is UNS N08800.

Grade	UNS	Werkstoff Nr.	DIN	JIS
Incoloy 800	N08800	1.4876	1.4876	NCF800

Properties of Incoloy 800 Seamless Pipe

Property	Value
Density	7.94 g/cm³
Specific Heat	460 J/kg·°C
Melting Range	1357–1385°C (2475–2525°F)
Curie Temperature	-115°C
Permeability (Annealed)	1.014
Permeability (Hot Rolled)	1.009

These properties make Inconel 800 Pipe suitable for structural and heat-resistant applications.

What is the difference between Inconel 800 Seamless Pipe and Inconel 800 Welded Pipe?

In industrial piping applications, both Inconel 800 Seamless Pipes and Inconel 800 Welded Pipes are selected for their strength and corrosion resistance at elevated temperatures.

Manufacturing Process

The primary difference lies in their manufacturing method.

Seamless Inconel 800 Pipe is produced by heating a solid billet and piercing it to form a hollow tube. The pipe is elongated and sized through hot rolling or cold drawing. Because it is manufactured without a weld seam, the structure remains continuous and homogeneous, resulting in superior pressure-handling capability and structural uniformity.

In contrast, Inconel 800 Welded Pipe is manufactured by rolling a flat strip or plate of alloy 800 into a cylindrical shape and welding the longitudinal seam using TIG, ERW, or EFW techniques. Post-weld heat treatment and non-destructive testing enhance weld integrity and mechanical performance.

UNS N08800 Incoloy 800 Seamless Pipe Weight Chart

NPS	OD		WT		Weight	Weight
NPS	mm	in	mm	in	Lb/ft	kg/Mtr
1"	33	1.315	3.378	0.133	1.679	2.501
-	-	-	4.547	0.179	2.172	3.325
3/4"	27	1.050	2.870	0.113	1.131	1.684
-	-	-	3.912	0.154	1.474	2.195
1 1/4"	42	1.660	3.556	0.140	2.273	3.385
-	-	-	4.851	0.191	2.997	4.464
2"	60	2.375	3.912	0.154	3.653	5.441
-	-	-	5.537	0.218	5.022	7.480
1 1/2"	48	1.900	3.683	0.145	2.718	4.048
-	-	-	5.080	0.200	3.361	5.409
3"	89	3.500	5.486	0.216	7.576	11.284
-	-	-	7.620	0.300	10.253	15.272
2 1/2"	73	2.875	5.516	0.203	5.793	8.629
-	-	-	7.010	0.276	7.661	11.411
4"	114	4.500	6.020	0.237	10.790	16.073
-	-	-	8.560	0.337	14.983	22.318
1/2"	21	0.840	2.769	0.109	0.851	1.268
-	-	-	3.734	0.147	1.088	1.621
6"	168	6.625	4.775	0.188	12.924	19.252
-	-	-	5.563	0.219	14.983	22.318
-	-	-	5.516	0.203	13.923	20.739
-	-	-	6.350	0.250	17.021	25.354
-	-	-	7.925	0.312	21.036	31.334
-	-	-	7.112	0.280	18.974	58.263
-	-	-	9.525	0.375	25.031	37.285
-	-	-	12.700	0.500	32.708	48.719
-	-	-	10.973	0.432	28.573	42.561

Reputed Inconel 800 Seamless Pipe and Inconel 800 Welded Pipe supplier, delivering high-performance pipes that maintain strength and integrity at extreme temperatures.

Available Inconel 800 Welded Pipe Schedules

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

Wall Thickness of Alloy 800 Seamless Pipe

NPS	O.D. (inch)	10S	10	40S / STD	40	80S / XS	80	160
1/8"	0.405	0.049	0.049	0.068	0.068	0.095	0.095	—
1/4"	0.540	0.065	0.065	0.088	0.088	0.119	0.119	—
3/8"	0.675	0.065	0.065	0.091	0.091	0.126	0.126	—
1/2"	0.840	0.083	0.083	0.109	0.109	0.147	0.147	0.187
3/4"	1.050	0.083	0.083	0.113	0.113	0.154	0.154	0.218
1"	1.315	0.109	0.109	0.133	0.133	0.179	0.179	0.250
1-1/4"	1.660	0.109	0.109	0.140	0.140	0.191	0.191	0.250
1-1/2"	1.900	0.109	0.109	0.145	0.145	0.200	0.200	0.281
2"	2.375	0.109	0.109	0.154	0.154	0.218	0.218	0.343
2-1/2"	2.875	0.120	0.120	0.203	0.203	0.276	0.276	0.375
3"	3.500	0.120	0.120	0.216	0.216	0.300	0.300	0.437
3-1/2"	4.000	0.120	0.120	0.226	0.226	0.318	0.318	—
4"	4.500	0.120	0.120	0.237	0.237	0.337	0.337	0.531
5"	5.563	0.134	0.134	0.258	0.258	0.375	0.375	0.625
6"	6.625	0.134	0.134	0.280	0.280	0.432	0.432	0.718
8"	8.625	0.148	0.148	0.322	0.322	0.500	0.500	0.906
10"	10.750	0.165	0.165	0.365	0.365	0.500	0.593	1.125
12"	12.750	0.180	0.180	0.375	0.406	0.500	0.687	1.312
14"	14.000	0.188	0.250	0.375	0.437	0.500	0.750	1.406
16"	16.000	0.188	0.250	0.375	0.500	0.500	0.843	1.593
18"	18.000	0.188	0.250	0.375	0.562	0.500	0.937	1.781

100% Certified Testing & Documentation

EN 10204 3.1 & 3.2 Material Test Certificates
Raw Material Certificate
100% PMI Testing
Heat Treatment Charts
Third-Party Inspection Report
Surface Roughness & Dimensional Inspection
Manufacturer Test Certificate (Impact, Flattening, Flare, Bend, Hardness, Intergranular Corrosion, Pitting Resistance, Grain Size, ET, UT, Hydro Test)
Laboratory Test Certificate from Government-Approved Lab

Inconel 800 Seamless & Welded Pipe Applications

Process piping
Heat exchangers
Heating-element sheathing
Carburizing equipment
Nuclear steam-generator tubing
Petrochemical processing plants
Furnace fixtures
Ammonia cracking units

These applications require Inconel 800 Seamless Pipes and Inconel 800 Welded Pipes capable of maintaining structural integrity under extreme temperature and corrosive conditions.

Get a Quote for Incoloy 800 Seamless & Welded Pipes

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