Inconel 800 Pipe
Inconel 800 Pipe is a high-performance nickel-iron-chromium alloy product that has been specifically developed to withstand extreme operating environments. This alloy exhibits excellent resistance to heat, oxidation, and carburization, which makes it an indispensable material for industries where ordinary stainless steels fail to deliver long-term stability. Unlike conventional piping materials that lose strength under continuous thermal exposure, Inconel 800 Pipes retain their structural integrity even in high-temperature conditions, ensuring reliable service life and reduced maintenance needs.
Engineered with exceptional creep rupture properties, these pipes perform consistently in applications that demand strength under prolonged stress at elevated temperatures. They are also valued for their dimensional stability, which allows them to resist distortion and deformation when exposed to fluctuating thermal cycles. Because of this, Inconel 800 Pipe is widely used across petrochemical plants, refineries, power generation units, and marine industries sectors where safety, efficiency and uninterrupted operation are critical.
High-Performance Alloy 800 Seamless Pipe Manufacturer in India | Trusted UNS N08800 / N08810 / N08811 Tubing Supplier
Stellar Alloys is a trusted name in the global piping industry with over two decades of experience in delivering nickel alloy pipes and tubes to critical sectors worldwide. As a leading manufacturer and exporter, we specialize in Inconel 800 Pipes and Tubes including Seamless Pipe, Welded Pipe, Seamless Tube and Welded Tube, catering to diverse industries such as petrochemical, oil & gas, power generation, refineries, and marine engineering.
With an extensive export network spanning multiple continents, Stellar Alloys has become the preferred partner for clients who demand reliability, timely delivery, and certified quality. Our ISO and PED-approved facilities ensure every pipe and tube meets international standards, while our strong supply chain allows us to handle both bulk exports and project-specific custom orders with ease.
By combining manufacturing expertise, advanced quality testing, and global logistics, Stellar Alloys ensures that customers receive not just high-performance Inconel 800 products but also the assurance of a dependable long-term supplier.
What Are Inconel 800 Pipe / Tubes?
Inconel 800 Pipes and Tubes are manufactured in both seamless and welded forms to cater to a wide range of industrial requirements. Seamless pipes and tubes are preferred for high-pressure and critical operations because they provide a leak-proof structure and uniform strength throughout the material. They are widely used in boiler systems, heat exchangers and high-pressure steam lines where safety and reliability are paramount. On the other hand, welded Inconel 800 Pipes and Tubes are designed for cost-effective solutions, especially in larger diameters where seamless production becomes impractical. These welded forms are extensively utilized in applications such as process piping, condensers, and large-scale industrial installations, delivering consistent performance while reducing overall project costs.
The alloy is available in three widely recognized variants: Inconel 800 (UNS N08800), Inconel 800H (UNS N08810), and Inconel 800HT (UNS N08811). Each grade is engineered with unique characteristics to meet specific operational needs. Standard Inconel 800 is suitable for general high-temperature service, while Inconel 800H is optimized with higher creep resistance, making it effective for prolonged service at elevated temperatures. Inconel 800HT, with controlled carbon and aluminum-titanium content, offers superior stress rupture strength, making it the best choice for the harshest and longest operating conditions.
These properties make Inconel 800 Pipes and Tubes highly reliable in demanding industries such as petrochemical reformer units, furnace equipment, steam generators and power generation systems. By combining mechanical durability with excellent corrosion resistance, they ensure safe, uninterrupted performance in environments where both strength and longevity are non-negotiable. This versatility and resilience have cemented their reputation as a trusted material choice for engineers and industries worldwide.
Types of Inconel Alloy 800 Pipes
Inconel Alloy 800 is available in a variety of pipe and tube types, each designed to meet specific performance and application needs. From seamless and welded options to advanced 800H and 800HT grades, these products offer a balance of strength, heat resistance, and corrosion protection. The table below highlights the different types of Inconel 800 Pipes and Tubes.
Incoloy 800 Pipe
Alloy 800HT Welded Pipe
Inconel 800 Seamless Pipe
Inconel 800 Pipe Specifications
Our Inconel 800 Pipes and Tubes are manufactured in strict compliance with international standards to meet the needs of critical industries. Each specification is carefully designed to ensure mechanical reliability, corrosion resistance, and long service life in demanding environments.
Parameter | Details |
Standards | ASTM B407 / ASME SB407 |
Grades | Inconel 800 (UNS N08800), 800H (UNS N08810), 800HT (UNS N08811) |
Forms | Seamless Pipe, Welded Pipe, Seamless Tube, Welded Tube |
End Finish | Plain End, Beveled End, Threaded |
Surface Finish | Bright Annealed, Pickled, Polished |
Available Size Range of Inconel 800 Pipe
Steel Pipe & Tubes supplies Inconel 800 / 800H / 800HT Seamless and Welded Pipes in accordance with ANSI/ASME B36.19M standards. The table below covers the commonly available outside diameter (OD), wall thickness (WT), schedule (Sch), and approximate weight per meter (Kg/m).
Outside Diameter (OD) mm | Wall Thickness (WT) mm | Nominal Pipe Size (in.) | Schedule (Sch) | Weight (Kg/m) |
13.72 | 1.65 | 1/4 | 10S | 0.50 |
13.72 | 2.24 | 1/4 | 40S | 0.64 |
13.72 | 3.02 | 1/4 | 80S | 0.81 |
17.15 | 1.65 | 3/8 | 10S | 0.64 |
17.15 | 2.31 | 3/8 | 40S | 0.86 |
17.15 | 3.20 | 3/8 | 80S | 1.12 |
21.34 | 2.11 | 1/2 | 10S | 1.02 |
21.34 | 2.77 | 1/2 | 40S | 1.29 |
21.34 | 3.73 | 1/2 | 80S | 1.65 |
26.67 | 2.11 | 3/4 | 10S | 1.30 |
26.67 | 2.87 | 3/4 | 40S | 1.71 |
26.67 | 3.91 | 3/4 | 80S | 2.23 |
33.40 | 2.77 | 1 | 10S | 2.13 |
33.40 | 3.38 | 1 | 40S | 2.54 |
33.40 | 4.55 | 1 | 80S | 3.29 |
42.16 | 3.56 | 1¼ | 40S | 3.44 |
42.16 | 4.85 | 1¼ | 80S | 4.53 |
48.26 | 3.68 | 1½ | 40S | 4.11 |
48.26 | 5.08 | 1½ | 80S | 5.49 |
60.33 | 3.91 | 2 | 40S | 5.52 |
60.33 | 5.54 | 2 | 80S | 7.60 |
73.03 | 5.16 | 2½ | 40S | 8.77 |
73.03 | 7.01 | 2½ | 80S | 11.59 |
88.90 | 5.49 | 3 | 40S | 11.47 |
88.90 | 7.62 | 3 | 80S | 15.51 |
114.30 | 6.02 | 4 | 40S | 16.32 |
114.30 | 8.56 | 4 | 80S | 22.67 |
141.30 | 6.55 | 5 | 40S | 22.10 |
141.30 | 9.53 | 5 | 80S | 31.44 |
168.28 | 7.11 | 6 | 40S | 28.69 |
168.28 | 10.97 | 6 | 80S | 43.21 |
219.08 | 8.18 | 8 | 40S | 43.20 |
219.08 | 12.70 | 8 | 80S | 65.63 |
219.08 | 18.23 | 8 | 120 | 91.30 |
ASTM B407 UNS N08800 Pipe Dimensions & Thickness Chart
The dimensions and wall thickness of Inconel 800 Pipes are standardized under ASTM B407 to ensure consistency and reliability across applications. The table below provides common nominal pipe sizes (NPS), outside diameters and wall thicknesses for different schedules.
NPS (Nominal Pipe Size) | Outside Diameter (mm) | Wall Thickness (mm) | Schedule |
½” | 21.34 | 2.77 | SCH 40 |
1” | 33.40 | 3.38 | SCH 40 |
2” | 60.33 | 5.54 | SCH 40 |
4” | 114.30 | 6.02 | SCH 40 |
6” | 168.27 | 7.11 | SCH 40 |
Pressure Ratings of Inconel 800 / 800H / 800HT Pipes
The pressure ratings of Inconel 800, 800H and 800HT Pipes and Tubes are critical for determining their suitability in high-temperature and high-pressure environments. These nickel-iron-chromium alloys are specifically engineered to retain strength, resist degradation, and deliver safe long-term performance in industries where conventional steels often fail.
Key Performance Highlights
Excellent Pressure Resistance in Aggressive Environments
Inconel 800 pipes maintain mechanical strength even in oxidizing, carburizing, and sulfiding atmospheres. This resistance prevents premature wear and chemical attack, making them reliable for continuous service in refineries, petrochemical plants, and thermal processing units.
Sustains High Pressure at Elevated Temperatures
Unlike standard steels that weaken under prolonged heat, Inconel 800, 800H, and 800HT withstand internal pressures at temperatures above 1100°C (2010°F). Their ability to retain structural integrity minimizes the risk of rupture or deformation in heat-intensive applications.
Widely Used in High-Pressure Equipment
Thanks to their toughness and resistance to creep rupture, these alloys are extensively used in boilers, superheaters, reformer units, steam piping, and heat exchangers. Their reliability under pressure extends service life, lowers downtime, and reduces maintenance costs.
Indicative Pressure Ratings (38 °C / 100 °F)
| Size × WT (mm) | Seamless Pipe (bar) | Welded Pipe (bar) |
| 25 × 2.0 | 350 | 298 |
| 40 × 2.5 | 263 | 223 |
| 50 × 3.0 | 251 | 213 |
| 50 × 5.0 | 460 | 391 |
| 75 × 3.0 | 160 | 136 |
| 100 × 5.0 | 204 | 174 |
Weight Chart of WERKSTOFF NR. 1.4876 Rectangular Pipes
The weight of Inconel 800 rectangular pipes (Werkstoff Nr. 1.4876) varies according to size and wall thickness. The chart below provides standard weight per meter values to assist engineers and buyers in accurate material estimation.
Size (mm) | Thickness (mm) | Weight (kg/m) |
50 x 25 | 3.0 | 3.2 |
75 x 50 | 4.0 | 6.8 |
100 x 50 | 5.0 | 10.2 |
HSN Code of Inconel 800 Seamless Pipes
The HSN (Harmonized System of Nomenclature) Code is an internationally recognized system used for the classification of goods in trade. For Inconel 800 Seamless Pipes, the HSN code helps in standardizing customs documentation, taxation, and international trade procedures, making it easier for buyers and exporters to identify the product category.
ASME SB407 Inconel 800 Pipe HS Code
Below is the HS Code classification for Inconel 800 / 800H / 800HT Pipes and Tubes as per ASME SB407 material specifications. These codes are widely used in import-export documentation, GST and customs clearance.
HS Code | Description |
73044900 | Hot Rolled Inconel 800 / 800H / 800HT Pipe as per ASME/ASTM SB407 |
73044100 | Cold Finished Inconel 800 / 800H / 800HT Pipe as per ASME/ASTM SB407 |
75051220 | Nickel Alloy Seamless Pipes & Tubes including Inconel 800 grades |
73042900 | Welded Inconel Alloy 800 Pipes & Tubes, corrosion and heat resistant |
73044900 | Inconel 800H/800HT Hot Rolled Pipe for high-temperature service |
Manufacturing Process of Alloy 800 Pipes
The production of Inconel 800 Pipes and Tubes at Stellar Alloys follows strict quality protocols to ensure durability, precision, and performance. Every step is carefully controlled to deliver seamless and welded products that meet international standards.
Selection of Premium Nickel-Iron-Chromium Billets: Only certified billets with the correct nickel–iron–chromium composition are sourced to maintain metallurgical stability. This careful selection ensures high corrosion resistance, excellent mechanical strength, and consistency, making the pipes reliable for critical service environments.
Hot Extrusion or Piercing for Seamless Pipes: Billets are heated and pierced to form hollow tubes, which are then extruded into seamless pipes. This process eliminates any weld seams, resulting in joint-free, high-pressure pipes that are leak-proof and ideal for boilers, petrochemical heaters, and steam generators.
Advanced Welding for Welded Pipes (TIG/MIG): For welded pipes, high-precision TIG (Tungsten Inert Gas) and MIG (Metal Inert Gas) welding techniques are used to join alloy plates or coils. This produces uniform weld seams with strong metallurgical bonds, making the pipes suitable for moderate-to-high pressure applications where larger diameters are required.
Cold Drawing and Pilgering for Tubes: Pipes and tubes undergo cold drawing and pilgering to refine dimensions and surface quality. This step improves tolerance accuracy, grain uniformity, and surface finish, while also enhancing strength through controlled work hardening a must for instrumentation tubes and heat exchanger applications.
Solution Annealing & Pickling: Heat treatment through solution annealing is performed to restore ductility and corrosion resistance. The pickling process removes surface oxides and impurities, leaving a clean, smooth finish. This ensures dimensional stability and long service life in corrosive environments.
Non-Destructive Testing for Quality Assurance: Every pipe undergoes rigorous ultrasonic, radiographic, and hydrostatic testing to detect any surface or internal defects. These non-destructive methods guarantee structural integrity, dimensional accuracy, and compliance with ASTM standards, providing buyers with products that are certified safe for use in critical applications.
Physical Properties of Inconel 800 Pipes (Annealed Condition)
The physical properties of Inconel 800 Pipes define their performance in high-temperature and corrosive environments. When supplied in the annealed condition, these properties highlight the alloy’s stability, durability, and suitability for demanding industries.
Property | Details |
Density | 7.94 g/cm³ |
Melting Range | 1357–1385 °C |
Tensile Strength | 520 MPa (min) |
Yield Strength (0.2% offset) | 205 MPa (min) |
Elongation | 30% |
Temperature Range of UNS N08800 Welded Pipes
The temperature resistance of UNS N08800 Welded Pipes makes them a reliable choice for industries where continuous exposure to heat is unavoidable. These pipes maintain stability, strength, and oxidation resistance even at elevated service conditions.
Continuous Service up to 1100°C (2010°F): Inconel 800 welded pipes can withstand prolonged exposure to very high temperatures. This ensures reliable performance in furnaces, petrochemical units, and power plants.
Resists Oxidation and Scaling: The alloy forms a protective oxide layer at high temperatures. This prevents scaling and surface degradation during thermal cycling.
Excellent Carburization Resistance: Even in carbon-rich environments, these pipes resist carburization. This makes them suitable for reformer tubes and cracking units where carbon deposits are common.
Stable Mechanical Properties at Heat: The pipes retain tensile and yield strength even under extreme heat. This ensures structural stability without risk of deformation or failure.
Stress Rupture Properties of Inconel 800HT Pipes
The stress rupture strength of Inconel 800HT Pipes makes them indispensable for industries operating under extreme heat and pressure. These properties ensure reliable performance in equipment where long-term durability is critical.
Superior Resistance to Creep and Stress Rupture: Inconel 800HT pipes maintain structural stability during extended exposure to stress at high temperatures. This prevents premature failure in pressure-retaining components.
Stable Microstructure Under Thermal Exposure: The alloy resists grain boundary weakening, ensuring metallurgical stability. This feature makes it highly effective in boilers, superheaters, and petrochemical heaters.
Enhanced Long-Term Performance: Even when subjected to continuous high-stress conditions, the pipes retain their mechanical properties. This extends service life and reduces the frequency of replacements.
Ideal for Reformer and Heater Units: The combination of creep strength and rupture resistance makes them suitable for reformer tubes, cracking units, and high-temperature process heaters. These applications demand consistent reliability over decades of service
Testing & Quality Standards for Nickel Alloy 800 Pipe
Every Inconel 800 Pipe and Tube undergoes stringent testing to guarantee safety, reliability, and compliance with international quality standards. These tests ensure that each product delivers consistent performance in critical applications.
100% PMI Testing (Positive Material Identification): Confirms that the alloy grade and chemical composition are accurate. This avoids material mix-ups and ensures buyers receive the specified quality.
Ultrasonic & Radiography Testing: Detects internal flaws, cracks, or porosity in seamless and welded pipes. These non-destructive methods ensure structural integrity without damaging the product.
Hydrostatic Test for Pressure Integrity: Pipes are subjected to pressurized water testing to check for leaks or weaknesses. This guarantees safe operation in high-pressure and high-temperature systems.
Tensile & Hardness Tests: Measures mechanical properties like strength, elongation, and hardness. These parameters confirm suitability for demanding industrial environments.
Certifications: EN 10204 3.1 / 3.2, ISO 9001, PED Approved: All pipes are supplied with internationally recognized certifications. This assures clients of compliance with global standards for export and project approvals.
Specification Sheet of Inconel 800 Hex / Bush Pipe
Our Inconel 800 Pipes and Tubes are manufactured to meet stringent international standards, covering a wide range of dimensions, finishes, and schedules. The detailed specification table below provides buyers with a quick reference to technical standards, certifications, and available options.
Category | Details |
ASTM Specification | ASTM B407, ASTM B514, ASTM B515, ASTM B751, ASTM B775, ASTM B829 |
UNS Grades | N08800, N08810, N08811 |
Standard | ASTM, ASME, AISI, SAE, EN, DIN, JIS, GB, NF, DS, TOCT, AMS, DTD |
International Specifications | ISO 6207, BS 3074 NA15, VdTüV 412 & 434, DIN 17459 |
Seamless Pipe Size | 4.0 mm to 219 mm, Wall Thickness: 0.5 mm to 20 mm |
Welded / EFW Pipe Size | 5.0 mm to 1219.2 mm |
Schedules Available | SCH 5, SCH 10, SCH 10S, SCH 20, SCH 30, SCH 40, SCH 40S, SCH 60, SCH 80, SCH 80S, SCH 120, SCH 140, SCH 160, XS, XXS, STD |
Swg & Bwg | 10 Swg, 12 Swg, 14 Swg, 16 Swg, 18 Swg, 20 Swg |
Surface Finish | BA (Bright Annealed), AP (Annealed & Pickled), Polished, No.1, 2B, No.4, HL, MF, Mirror, 8K Finish |
Length | Single Random, Double Random, Cut Lengths |
Pipe Forms | Round, Square, Rectangular, Hollow, Hydraulic, Coiled, Straight Pipes, “U” Shape, Pancake Coils |
Pipe Ends | Plain End, Beveled End, Threaded / Screwed Ends |
Pipe Types | Seamless, Welded, ERW, EFW, CEW, DOM, CDW, Fabricated |
Applications | Boiler Pipe, Oil & Gas Pipe, Fluid Pipe, Dairy Pipe, Chemical Industry Pipe |
Marking on Pipes | Grade, Standard, OD, Thickness, Heat No., Length (custom marking available) |
Specialization | Large Diameter Inconel 800 / 800H / 800HT Pipe |
Value Added Services | Electro & Commercial Polish, Annealing & Pickling, Bending, Draw & Expansion, Machining as per size & length |
Manufacturing Techniques | Hot Drawn, Cold Drawn, Hot Extruded, Solid Solution Annealed, Bright Annealed |
Test Certificates | Manufacturer Test Certificate (MTC), Government Lab Certificate, Third-Party Inspection Reports |
Quality Reports | Radiography Test Report, Heat Treatment Charts, Fumigation Certificates, Raw Material Certificates |
MTC Standards | EN 10204 / 3.1, EN 10204 / 3.1B, EN 10204 / 3.2 |
HSN Code | 75051220 |
Export Documents | Commercial Invoice, Form A (GSP – Generalized System of Preferences) |
Major Manufacturers (Sourcing) | Kobe Steel (Japan), Nippon Steel (Japan), Sumitomo Metals (Japan), Sanyo Special Steel (Japan), Tubacex (Spain), Schoeller Bleckmann (Austria), Seah Steel (Korea) |
Global Supply Locations | India (Mumbai, Delhi, Pune, Rajkot, Surat, Ahmedabad, Bangalore, Chennai, Coimbatore, Vadodara, Ludhiana, Kolkata, Hyderabad, Nagpur, Indore, Jamshedpur, Baroda, Noida, Ranchi, Howrah, Thiruvananthapuram, Ernakulam), UAE (Abu Dhabi, Dubai), Saudi Arabia (Riyadh, Dammam, Khobar), Iran (Ahvaz, Tehran), Qatar (Doha), Oman (Muscat), Bahrain (Manama), Kuwait, Turkey (Istanbul, Ankara), Europe (London, Courbevoie, Madrid, Vienna), North America (Montreal, Calgary, Mexico City), South America (Bogota, Caracas, Rio de Janeiro, Santiago), Asia-Pacific (Melbourne, Sydney, Perth, Gimhae-si, Seoul), Africa (Lagos) and many more. |
Latest Price List of Alloy 800 Seamless Tubes (Per Kg)
| Description | Price (INR) |
| Inconel 800 / 800H Seamless Alloy Steel Pipe | ₹1,66,000 – ₹3,32,000 / Ton |
| Inconel 800 / 800H / 800HT Nickel Alloy Pipe | ₹29,05,000 – ₹49,80,000 / Ton |
| Inconel 800 Alloy Seamless Pipe | ₹83 / Kg |
| Inconel 800 Seamless Stainless Steel Pipe | ₹83,000 / Ton |
| DIN 1.4876 GB111 Inconel 800 Nickel Alloy Pipe (Sheathing & Nuclear Tubing) | ₹1,826 / Kg |
| Inconel 800 / 800H / 800HT Seamless Pipe (FM60 Grade) | ₹33,200 – ₹83,000 / Ton |
| Inconel 800 Alloy Welded Pipe | ₹1,826 – ₹2,158 / Kg |
| Inconel 800H / 800HT Heat-Resistant Alloy Pipe (UNS N08810) | ₹5,81,000 / Ton |
| Inconel 800 Nickel Alloy Seamless Pipe | ₹4,15,000 / Ton |
Why Choose Stellar Alloys for Inconel 800 Pipe & Tubes?
Choosing Stellar Alloys for your Inconel 800 Pipes and Tubes means partnering with a manufacturer that combines technical expertise with global reliability. With over two decades of experience, we have earned a reputation as a trusted supplier of Inconel 800, 800H, and 800HT Pipes and Tubes across industries such as petrochemical, oil and gas, power generation, and aerospace. Our ISO and PED-certified facilities are equipped with advanced manufacturing and testing technologies, ensuring every seamless and welded product meets international standards. We emphasize not only material integrity but also documentation, providing complete mill test certificates, PMI reports, and export-ready compliance records for all shipments.
What sets Stellar Alloys apart is our ability to offer competitive pricing while maintaining uncompromised quality. With a strong export network, we ensure timely deliveries to clients worldwide, whether for small projects or large-scale industrial requirements. Our customer-first approach, backed by technical guidance and after-sales support, makes us the preferred choice for buyers seeking long-term reliability, performance, and value in Inconel alloy piping solutions.
Frequently Asked Questions About Inconel 800 Pipe
Inconel 800 outperforms SS 316L in high-temperature applications because it retains mechanical strength and resists oxidation even above 1100°C. Stainless steel, on the other hand, tends to lose strength and corrode under prolonged heat exposure.
Inconel 800 is designed primarily for heat resistance and mechanical stability in extreme temperatures. Inconel 825, however, has added molybdenum and copper, which improve its resistance to strong reducing acids such as sulfuric and phosphoric acid.
No, Inconel 800 does not rust like carbon steel because it forms a protective oxide layer on the surface. This stable layer shields the alloy from further attack, making it highly resistant to corrosion and scaling even in aggressive environments.
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