Incoloy 800/800H/800HT Pipes – Supplier, Manufacturer & Exporter | ASC LLP
ASC LLP is a leading manufacturer, supplier, and exporter of Incoloy 800, 800H, and 800HT pipe products globally. Our range of Incoloy 800/800H/800HT Pipes is designed to perform exceptionally in high-temperature and high-pressure environments. Whether it’s for power plants, petrochemical industries, heat exchangers, or exhaust systems, our pipes offer unmatched strength, corrosion resistance, and durability.
We specialize in providing pipes that meet all international quality standards, including ASTM B358 Incoloy 800 Seamless Pipes, ASTM B407 Incoloy 800 Seamless Pipe, and ASTM B163 Incoloy 800 Seamless Pipes Manufacturer grades. As trusted Incoloy Alloy 800 Exhaust Pipe Dealers and Incoloy UNS N08800 Square Pipes Suppliers, we ensure high-quality materials with on-time delivery.
What is Incoloy 800/800H/800HT?
Incoloy 800 series is a group of nickel-iron-chromium alloys designed to offer superior strength and oxidation resistance at high temperatures.
- Incoloy 800 (UNS N08800): Standard grade known for excellent corrosion and oxidation resistance.
- Incoloy 800H (UNS N08810): Modified version with higher carbon content for improved high-temperature strength.
- Incoloy 800HT (UNS N08811): Even better creep and rupture strength due to tighter control of carbon, aluminum, and titanium levels.
These alloys are widely used in heat exchangers, steam generators, and chemical processing equipment.

Key Features of Inconel 800 Pipes
- Excellent oxidation and carburization resistance
- High mechanical strength and creep resistance
- Outstanding corrosion resistance in acidic and high-temperature environments
- Performs well in temperatures up to 1100°C (2000°F)
- Resists chloride stress corrosion cracking
- Good weldability and workability
ASTM Specifications for Incoloy 800/800H/800HT Pipes
At ASC LLP, we offer pipes that conform to the following standards:
- ASTM B358 Incoloy 800 Seamless Pipes – For high-temperature and pressure services
- ASTM B407 Incoloy 800 Seamless Pipe – Commonly used in chemical and petrochemical industries
- ASTM B163 Incoloy 800 Seamless Pipes Manufacturer – Ideal for heat exchangers and condenser applications
We ensure every pipe meets precise dimensional and chemical standards, is tested with full certification and traceability.
ASTM B407 Incoloy 800 Seamless Pipe Product Range
We supply Incoloy 800, 800H, and 800HT pipes in a variety of forms to meet your exact needs:
1. Seamless Pipes
- Smooth, defect-free surfaces
Used in high-pressure and high-temperature applications - Sizes: 1/8” NB to 24” NB
2. Welded Pipes
- Available in ERW, EFW, and SAW forms
- Suitable for low- to medium-pressure systems
3. Square and Rectangular Pipes
- As reliable Incoloy UNS N08800 Square Pipes Suppliers, we offer high-precision square tubes for structural and architectural use.
4. Exhaust Pipes
- Incoloy Alloy 800 Exhaust Pipe Dealers with experience supplying to the automotive, aerospace, and energy industries.


Incoloy 800/800H/800HT Pipes & Tubes Equivalent Grades
Grade | UNS No. | Werkstoff Nr. | Trade Name |
Incoloy 800 | N08800 | 1.4876 | Alloy 800 |
Incoloy 800H | N08810 | 1.4958 | Alloy 800H |
Incoloy 800HT | N08811 | 1.4959 | Alloy 800HT |
Schedule and Size Chart – Incoloy 800 Pipes
Nominal Pipe Size (NPS) | Outside Diameter (OD) (mm) | Schedule 10 (mm) | Schedule 40 (mm) | Schedule 80 (mm) | Schedule 160 (mm) |
1/2″ | 21.3 | 1.65 | 2.77 | 3.73 | 4.78 |
3/4″ | 26.7 | 1.65 | 2.87 | 3.91 | 5.56 |
1″ | 33.4 | 1.65 | 3.38 | 4.55 | 6.35 |
1 1/2″ | 48.3 | 1.65 | 3.68 | 5.08 | 7.14 |
2″ | 60.3 | 1.65 | 3.91 | 5.54 | 8.74 |
3″ | 88.9 | 1.91 | 5.49 | 7.62 | 11.13 |
4″ | 114.3 | 2.11 | 6.02 | 8.56 | 13.49 |
6″ | 168.3 | 2.77 | 7.11 | 10.97 | 18.26 |
8″ | 219.1 | 2.77 | 8.18 | 12.70 | 23.01 |
Specifications Chart – Inconel 800H Pipes
Specification | Details |
Product Name | Incoloy 800 / 800H / 800HT Pipes |
Grades | 800 (UNS N08800), 800H (UNS N08810), 800HT (UNS N08811) |
Standards | ASTM B407, ASTM B358, ASTM B163 |
Dimensions | ANSI/ASME B36.10M, B36.19M |
Pipe Type | Seamless, Welded, ERW, Fabricated |
Outer Diameter Range | 6.35 mm to 219.1 mm (1/4″ to 8″) |
Wall Thickness | 0.5 mm to 20 mm (SCH 10 to SCH 160) |
Length | Single Random, Double Random & Cut Lengths |
Form | Round Pipes, Square Pipes, Rectangular Pipes, Exhaust Pipes |
End Finish | Plain End, Beveled End, Threaded |
Manufacturing Method | Cold Drawn / Hot Rolled |
Surface Finish | Polished, Annealed, Pickled, Sandblasted |
Physical Properties Chart – Incoloy 800/800H/800HT
Property | Incoloy 800 | Incoloy 800H / 800HT |
Density | 7.94 g/cm³ | 7.94 g/cm³ |
Melting Point | 1357 – 1385 °C | 1350 – 1400 °C |
Electrical Resistivity (20°C) | 1.12 μΩ·m | 1.12 μΩ·m |
Thermal Conductivity (100°C) | 11.2 W/m·K | 11.2 W/m·K |
Specific Heat (20–100°C) | 460 J/kg·K | 460 J/kg·K |
Modulus of Elasticity (20°C) | 196 GPa | 196 GPa |
Coefficient of Expansion (20–100°C) | 14.4 µm/m·°C | 14.4 µm/m·°C |
Magnetic Permeability | ≤1.02 (at 200 Oe) | ≤1.02 |
Incoloy 800HT Pipes – Chemical Composition
Element | 800 (%) | 800H (%) | 800HT (%) |
Nickel | 30.0–35.0 | 30.0–35.0 | 30.0–35.0 |
Chromium | 19.0–23.0 | 19.0–23.0 | 19.0–23.0 |
Iron | Balance | Balance | Balance |
Carbon | ≤ 0.10 | 0.05–0.10 | 0.06–0.10 |
Aluminum | 0.15–0.60 | 0.15–0.60 | 0.25–0.60 |
Titanium | 0.15–0.60 | 0.15–0.60 | 0.25–0.60 |
Incoloy UNS N08800 Pipes Mechanical Properties
Property | 800 | 800H / 800HT |
Tensile Strength (MPa) | ≥ 520 | ≥ 450 |
Yield Strength (MPa) | ≥ 205 | ≥ 170 |
Elongation (%) | ≥ 30 | ≥ 30 |
Hardness (Brinell) | ≤ 150 HB | ≤ 150 HB |
Applications of Inconel 800/800H/800HT seamless pipes
These pipes are designed for use in demanding environments such as:
- Heat exchangers
- Furnace components
- Steam superheaters
- Petrochemical equipment
- Nuclear power plants
- Chemical processing units
- Exhaust systems and tubing
Thanks to their excellent thermal stability and corrosion resistance, these pipes last longer and require less maintenance.
Why choose ASC LLP as your supplier for Inconel 800 pipes and tubes?
ASC LLP is trusted by clients worldwide for delivering premium-quality Incoloy 800, 800H, and 800HT pipe products. Here’s why industries choose us:
- Wide Range: From ASTM B407 Incoloy 800 Seamless Pipe to square and exhaust types
- Top-Notch Quality Control: All pipes undergo rigorous testing, including PMI, hydrostatic, and ultrasonic tests
- Custom Sizing Available: We manufacture as per the client’s specifications
- Global Shipping: Exporting to 80+ countries
- Fast Turnaround: Quick lead times and efficient delivery
- Experienced Team: Backed by a team of metallurgy and manufacturing experts
Global Reach
Amardeep Steel Centre boasts a robust global presence, committed to delivering unparalleled service and quality to clients around the world. Our dedication to prompt delivery and exceptional customer care sets us apart in the industry. Major corporations across the USA, Europe, Asia, and other regions place their trust in our high-quality Inconel 800/800H/800HT Pipes. This widespread trust underscores our reputation for reliability and excellence. By consistently meeting and exceeding the expectations of our international clientele, we continue to solidify our position as a leader in the global steel market.

Countries We Export To
UNITED STATES, EUROPE, UK, UAE, SAUDI ARABIA, OMAN, KUWAIT, JORDAN, QATAR, INDONESIA, MALAYSIA, BRAZIL, SPAIN, ITALY, FRANCE, GERMANY, BAHRAIN, SRI LANKA, AZERBAIJAN, AUSTRALIA, AUSTRIA, PHILIPPINES, TURKEY, RUSSIA, IRAN, IRAQ, CANADA, KOREA, JAPAN, YEMEN, FINLAND, ZIMBABWE, HUNGARY, PORTUGAL, VIETNAM, MOROCCO, THAILAND, SOUTH AFRICA, MEXICO, SINGAPORE, GREECE, KUWAIT, POLAND, NEW ZEALAND, SWEDEN, SWITZERLAND, BELGIUM, BHUTAN, BANGLADESH, TAIWAN, ROMANIA, CAMBODIA, KAZAKHSTAN, AFGHANISTAN.
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