Incoloy 800/800H/800HT Buttweld Fittings Manufacturer & Supplier
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Midland Alloys Inc. is a reputable manufacturer and worldwide supplier of Incoloy 800/800H/800HT Buttweld Fittings designed for use in corrosive and high temperature environments. The nickel, iron and chromium alloy blend used to make these fittings provides exceptional strength, resistance to oxidation and structural stability. They are extensively utilized in refineries, petrochemical plants, power boilers and heat exchangers where reliable operation under pressure is crucial. We provide fittings in Incoloy 800, 800H and 800HT grades that meet ANSI B16.9, DIN 1.4876 / 1.4958 and ASTM B366 standards. A variety of crucial applications can benefit from each variant’s ability to meet particular mechanical and thermal requirements. Being one of India’s top producers of Incoloy 800HT Pipe and Buttweld Fitting we provide precise measurements tailored solutions and affordable prices. Contact us today for reliable supply and fast delivery across global markets.
Incoloy 800 / 800H / 800HT Buttweld Fittings Overview
Incoloy 800/800H/800HT buttweld fittings are nickel iron chromium alloy fittings made for systems that face extreme heat and corrosive conditions. These fittings have better strength, excellent heat resistance and smooth connectivity with pipelines in harsh industrial use. Grade 800 serves as the base alloy. 800H features controlled carbon content for better creep resistance, while 800HT comes with tighter carbon limits and added aluminium and titanium to boost strength at high temperatures. All grades follow ASTM B366 and ASME B16.9 fitting standards.
In addition to Al/Ti, the usual composition consists of 30–35% Nickel, 19–23% Chromium, and roughly 0.05–0.10% Carbon. Heat exchangers, headers and process piping are made more dependable by this blend’s ability to withstand oxidation, carburization and sulfidation. We provide both standard and custom dimensions for these high temperature pipe fittings. In demanding operations, every fitting such as the 800/800H/800HT Incoloy Alloy Pipe Elbow is designed for strength, accuracy and long service life.
Benefits of Incoloy 800/800H/800HT Buttweld Fittings
Incoloy 800/800H/800HT Buttweld Fittings offer dependable performance in demanding industries like refineries, chemical plants, and power generation. Known for durability and corrosion resistance these fittings meet strict quality standards, including ASTM B366 WPNIC Incoloy 800H Pipe Fittings and DIN 1.4876 Incoloy Buttweld Fittings. Whether you need welded Incoloy 800H pipe fittings or customised parts with specific Incoloy 800/800H/800HT buttweld fittings thickness the benefits remain consistent and trusted.
- Outstanding ability to withstand corrosion and oxidation in challenging conditions
- Dependable durability for extended exposure to high temperatures
- Good weldability makes on site fabrication and repairs simple
- Stable structure even in the face of stress and heat cycling
- Compatible with common forming tools and fabrication processes
- Throughout the service life, little maintenance is needed
- Extensively utilized in the heat treatment, petrochemical, and power sectors
- Supported by international standards such as ANSI B16.9 and ASTM B366
Incoloy 800/800H/800HT Buttweld Fittings Specification
Each buttweld fitting in the Incoloy 800 series which includes Incoloy 800, 800H and 800HT is designed for exceptional strength, heat resistance and extended service life in environments that are corrosive or hot. These fittings are produced in accordance with dimensional standards like ASME B16.0 and stringent international standards like ASTM B366.
Whether you need precise Incoloy 800 specification details or are looking for the exact Incoloy 800HT ASTM specification, the table below provides a clear summary for engineering and procurement reference.
Seamless Butt Weld Fittings: 1/2" - 10" Welded Butt Weld Fittings: 1/2" - 48"
ASTM B366 / ASME SB366
Forge, Cast, Push, Press, etc.
90 Deg. Elbow, 45 Degree Elbow, LR/SR Elbow, Reducers, Tee, Cross, Bends, U bend, 180 Deg Bend, End Cap, Lap-joint Stub End
ASME/ANSI B16.9, ASME B16.28, MSS-SP-43, BS4504, BS4504, BS1560, BS10
Plain End, Beveled End, Treaded
SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS available with NACE MR 01-75
Seamless / Welded / Fabricated
Incoloy 800/800H/800HT Buttweld Fittings Types
Incoloy 800/800H/800HT Buttweld Fittings are available in multiple types, each designed based on its manufacturing process or pipe form. These types vary in strength, construction method and dimensional range, allowing flexibility for different industrial pipe systems.
Manufacturing Types
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Seamless Buttweld FittingsIdeal for high-pressure systems, it is constructed from solid tube sections that are free of welds.
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Welded Buttweld FittingsMade by welding coils or rolled plates, this product is ideal for large-scale, low pressure applications.
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Fabricated FittingsMade to order from cut pieces of plate or pipe perfect for irregularly shaped or sized objects.
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Forged Buttweld FittingsMade from billets or forged bars they have a consistent grain structure and great strength.
Pipe Form Types
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Seamless PipesFormed without welds for consistent wall thickness and pressure handling.
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Welded PipesEconomical for larger diameters it is made from flat rolled plates that are welded along the seam.
- ERW (Electric Resistance Welded) Pipes
Often used for medium-pressure service, it is made by joining edges with electric resistance.
- EFW (Electric Fusion Welded) Pipes
Designed for accuracy in thicker sections using fusion welding.
- Fabricated Pipes
When standard sizes don't satisfy design requirements, this multi-component assembly is utilized.
- Round Pipes
The majority of general industrial piping systems use pipes with a circular cross section.
- Square/Rectangular Pipes
Shaped for uses in frames and supports that are specific to structural and design requirements.
Technical Details & Delivery Condition
| Grade | C | Mn | Si | S | Cu | Fe | Ni | Cr | Al | Ti |
| 800 | 0.10 max | 1.50 max | 1.00 max | 0.015 max | 0.75 max | 39.50 min | 30.00 – 35.00 | 19.00 – 23.00 | 0.15 – 0.60 | 0.15 – 0.60 |
| 800H | 0.05 – 0.10 | 1.50 max | 1.00 max | 0.015 max | 0.75 max | 39.50 min | 30.00 – 35.00 | 19.00 – 23.00 | 0.15 – 0.60 | 0.15 – 0.60 |
| 800HT | 0.06 – 0.10 | 1.50 max | 1.00 max | 0.015 max | 0.75 max | 39.50 min | 30.00 – 35.00 | 19.00 – 23.00 | 0.15 – 0.60ᴬ | 0.15 – 0.60ᴬ |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 800 / 800H / 800HT | 7.94 g/cm3 | 1385 °C (2525 °F) | Psi – 75,000 , MPa – 520 | Psi – 30,000 , MPa – 205 | 30 % |
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN | OR |
| Incoloy 800 | 1.4876 | N08800 | NCF 800 | NA 15 | ЭИ670 | Z8NC32-21 | X10NiCrAlTi32-20 | XH32T |
| Incoloy 800H | 1.4958 / 1.4876 | N08810 | NCF 800H | NA 15(H) | ЭИ670 | Z8NC33-21 | X5NiCrAlTi31-20 | XH32T |
| Incoloy 800HT | 1.4859 / 1.4876 | N08811 | NCF 800HT | NA 15(HT) | ЭИ670 | – | X8NiCrAlTi32-21 | XH32T |
Incoloy Buttweld Fittings Grades We Offer
Incoloy 800/800H/800HT Buttweld Fittings Dimension
| Nominal Pipe Size | Outside Diameter | 90° Elbows | 45° Elbows | 180° Returns | ||||
| (inches) | Long Radius | Short Radius | Long Radius | Long Radius | ||||
| (mm) | (inches) | Center to Face (inches) | Center to Face (inches) | Center to Face (inches) | Radius (inches) | Center to Center (inches) | Back to face (inches) | |
| 1/2 | 21.3 | 0.840 | 1 1/2 | – | 5/8 | 2 | 1 7/8 | |
| 3/4 | 26.7 | 1.050 | 1 1/8 | – | 7/16 | 2 1/4 | 1 11/16 | |
| 1 | 33.4 | 1.315 | 1 1/2 | 1 | 7/8 | 3 | 2 3/16 | |
| 1 1/4 | 42.2 | 1.660 | 1 7/8 | 1 1/4 | 1 | 3 3/4 | 2 3/4 | |
| 1 1/2 | 48.3 | 1.900 | 2 1/4 | 1 1/2 | 1 1/8 | 3 | 4 1/2 | 3 1/4 |
| 2 | 60.3 | 2.375 | 3 | 2 | 1 3/8 | 4 | 6 | 4 3/16 |
| 2 1/2 | 73.0 | 2.875 | 3 3/4 | 2 1/2 | 1 3/4 | 5 | 7 1/2 | 5 3/16 |
| 3 | 88.9 | 3.500 | 4 1/2 | 3 | 2 | 6 | 9 | 6 1/4 |
| 3 1/2 | 101.6 | 4.000 | 5 1/4 | 3 1/2 | 2 1/4 | 7 | 10 1/2 | 7 1/4 |
| 4 | 114.3 | 4.500 | 6 | 4 | 2 1/2 | 8 | 12 | 8 1/4 |
| 5 | 141.3 | 5.563 | 7 1/2 | 5 | 3 1/8 | 10 | 15 | 10 5/16 |
| 6 | 168.3 | 6.625 | 9 | 6 | 3 3/4 | 12 | 18 | 12 5/16 |
| 8 | 219.1 | 8.625 | 12 | 8 | 5 | 12 | 24 | 16 5/16 |
| 10 | 273.1 | 10.750 | 15 | 10 | 6 1/4 | 15 | 30 | 20 3/8 |
| 12 | 323.9 | 12.750 | 18 | 12 | 7 1/2 | 18 | 36 | 24 3/8 |
Incoloy 800/800H/800HT Buttweld Fittings Weight Chart
| Pipe Elbow Nominal Size | Pipe Elbow Outside Diameter Y | Wall Thickness T (Pipe Elbow Schedule) | 45 Deg. Elbow LR Centre to Face B | 45 Deg. Elbow LR Weight | 90 Deg. Elbow LR Centre to Face A | 90 Deg. Elbow LR Weight | 90 Deg. Elbow SR Centre to Face A | 90 Deg. Elbow SR Weight | ||
| mm | in | mm | mm | Schedule | mm | kg | mm | kg | mm | kg |
| 15 | 1/2” | 21.3 | 2.78 | STD | 15.9 | 0.04 | 38.1 | 0.08 | – | – |
| 3.73 | X.S | 15.9 | 0.05 | 38.1 | 0.10 | – | – | |||
| 20 | 3/4” | 26.7 | 2.87 | STD | 11.1 | 0.04 | 28.6 | 0.08 | – | – |
| 3.91 | X.S | 11.1 | 0.05 | 28.6 | 0.11 | – | – | |||
| 25 | 1” | 33.4 | 3.38 | STD | 22.2 | 0.09 | 38.1 | 0.15 | 25.4 | 0.11 |
| 4.55 | X.S | 22.2 | 0.11 | 38.1 | 0.19 | 25.4 | 0.14 | |||
| 32 | 11/4” | 42.2 | 3.56 | STD | 25.4 | 0.14 | 47.6 | 0.28 | 31.75 | 0.18 |
| 4.85 | X.S | 25.4 | 0.2 | 47.6 | 0.39 | 31.75 | 0.24 | |||
| 40 | 11/2” | 48.3 | 3.68 | STD | 28.6 | 0.2 | 57.1 | 0.4 | 38.1 | 0.26 |
| 5.08 | X.S | 28.6 | 0.25 | 57.1 | 0.5 | 38.1 | 0.35 | |||
| 50 | 2” | 60.3 | 3.91 | STD | 34.9 | 0.36 | 76.2 | 0.72 | 50.8 | 0.5 |
| 5.54 | X.S | 34.9 | 0.5 | 76.2 | 1.0 | 50.8 | 0.68 | |||
| 65 | 21/2” | 73.0 | 5.16 | STD | 44.4 | 0.73 | 95.2 | 1.46 | 63.5 | 0.95 |
| 7.01 | X.S | 44.4 | 0.91 | 95.2 | 1.82 | 63.5 | 1.27 | |||
| 80 | 3” | 88.9 | 5.49 | STD | 50.8 | 1.1 | 114.3 | 2.18 | 76.2 | 1.45 |
| 7.62 | X.S | 50.8 | 1.45 | 114.3 | 2.86 | 76.2 | 1.95 | |||
| 100 | 4” | 114.3 | 6.02 | STD | 63.5 | 2.1 | 152.4 | 4.2 | 101.6 | 2.8 |
| 8.56 | X.S | 63.5 | 2.9 | 152.4 | 5.7 | 101.6 | 3.9 | |||
| 125 | 5” | 141.3 | 6.65 | STD | 79.4 | 3.4 | 190.0 | 6.8 | 127.0 | 4.8 |
| 9.5 | X.S | 79.4 | 5.0 | 190.0 | 10.0 | 127.0 | 6.5 | |||
| 150 | 6” | 168.3 | 7.11 | STD | 95.2 | 5.1 | 229.0 | 10.1 | 152.4 | 6.8 |
| 10.97 | X.S | 95.2 | 7.7 | 229.0 | 15.3 | 152.4 | 10.2 | |||
| 200 | 8” | 219.1 | 8.18 | STD | 127.0 | 10.2 | 305.0 | 20.4 | 203.0 | 13.6 |
| 12.7 | X.S | 127.0 | 15.5 | 305.0 | 30.9 | 203.0 | 20.9 | |||
| 250 | 10” | 273.9 | 9.27 | STD | 159.0 | 18.1 | 381.0 | 36.1 | 254.0 | 24.1 |
| 12.7 | X.S | 159.0 | 24.4 | 381.0 | 48.8 | 254.0 | 32.5 | |||
| 300 | 12” | 323.9 | 9.52 | STD | 190.0 | 26.6 | 457.0 | 53.1 | 305.0 | 35.4 |
| 12.7 | X.S | 190.0 | 35.0 | 457.0 | 70.0 | 305.0 | 46.7 | |||
| 350 | 14” | 355.6 | 9.52 | STD | 222.0 | 34.1 | 533.0 | 68.1 | 356.0 | 45.4 |
| 12.7 | X.S | 222.0 | 45.0 | 533.0 | 90.0 | 356.0 | 60.0 | |||
| 400 | 16” | 406.4 | 9.52 | STD | 254.0 | 45.0 | 610.0 | 89.3 | 406.0 | 59.5 |
| 12.7 | X.S | 254.0 | 59.0 | 610.0 | 118.0 | 406.0 | 78.7 | |||
| 450 | 18” | 457.0 | 9.52 | STD | 286.0 | 56.5 | 686.0 | 113.0 | 457.0 | 75.6 |
| 12.7 | X.S | 286.0 | 75.0 | 686.0 | 150.0 | 457.0 | 100.0 | |||
| 500 | 20” | 508.0 | 9.52 | STD | 318.0 | 85.0 | 762.0 | 140.0 | 508.0 | 93.5 |
| 12.7 | X.S | 318.0 | 112.5 | 762.0 | 186.0 | 508.0 | 124.0 | |||
| 600 | 24” | 610.00 | 9.52 | STD | 381.0 | 101.5 | 914.0 | 203.0 | 610.0 | 135.0 |
| 12.7 | X.S | 381.0 | 134.5 | 914.0 | 269.0 | 610.0 | 179.0 | |||
Manufacturing Process of Incoloy 800 Buttweld Fittings Series
As one of the leading manufacturers of ANSI B16.9 Incoloy Alloy 825 Buttweld Fittings, we follow a precise and controlled process to ensure consistent quality and competitive pricing. Each step below reflects how Incoloy 800, 800H, and 800HT buttweld fittings are crafted to meet critical industrial requirements.
- Material Selection
Choose certified Incoloy 800/800H/800HT billets or plates as per project specs and ASTM B366 standards. - Cutting
Cut raw materials into appropriate sizes using automated sawing or plasma cutting machines. - Heating
Heat the material to the correct forging temperature to improve malleability during forming. - Forming
Shape the material into elbows, tees, reducers, or caps using hot forming techniques like press forging. - Welding (for welded fittings)
Join sections using TIG or MIG welding, followed by surface cleaning to remove oxides. - Heat Treatment
Apply solution annealing or stress relief based on grade type (especially for 800H/800HT). - Machining
Perform precise machining to achieve tight tolerances and smooth surface finishes. - Inspection & Testing
Conduct NDT, dimensional checks, and pressure tests to verify strength, integrity, and compliance.
Pipe
Cutting
Forming
Sizing
Heat Treatment
Pickling
Beveling
Polishing
Sand Blasting
Elbow
Inspection
Analytic
Marking
Packing & Shipping
Application of Inconel 800 / 800H / 800HT Buttweld Fittings
Inconel 800 series buttweld fittings are widely chosen across heavy-duty sectors for their exceptional strength and resistance to heat and corrosion. These fittings play a vital role in petrochemical plants, where they handle corrosive fluids and elevated temperatures. In power generation industries, they are used in steam lines, superheaters, and reheaters due to their creep resistance. The oil and gas industry depends on them for pressure bearing pipelines exposed to harsh offshore and onshore conditions.
Their performance in heat treatment equipment and furnace components makes them a reliable solution for thermal cycling applications. In architecture and construction, Inconel 800 series fittings offer stability and integrity in load-bearing frameworks exposed to extreme weather or thermal stress. The nuclear industry values these alloys for reactor cores and steam generators where material integrity under radiation and high temperatures is critical. Each of these sectors trusts the 800 series for reliable, long-term performance under severe operating environments.
To guarantee compatibility with industrial piping systems, Inconel 800, 800H and 800HT buttweld fittings adhere to exact dimensional specifications. In high temperature service, these standards ensure precise alignment, pressure integrity and structural dependability. We provide all fittings, including elbows, tees, reducers, caps and stub ends in accordance with ASTM B366 Incoloy 800 Buttweld Fittings Dimensions.
Refer to the table below for standard fitting dimensions, based on ASME B16.9 and related specifications. Custom sizes are also available upon request to suit unique project needs.
Dimensions Standard of Inconel 800 / 800H / 800HT Buttweld Fittings
| Nominal Pipe Size | Outside Diameter | 90° Elbows | 45° Elbows | 180° Returns | ||||
| (inches) | Long Radius | Short Radius | Long Radius | Long Radius | ||||
| (mm) | (inches) | Center to Face (inches) | Center to Face (inches) | Center to Face (inches) | Radius (inches) | Center to Center (inches) | Back to face (inches) | |
| 1/2 | 21.3 | 0.840 | 1 1/2 | – | 5/8 | 2 | 1 7/8 | |
| 3/4 | 26.7 | 1.050 | 1 1/8 | – | 7/16 | 2 1/4 | 1 11/16 | |
| 1 | 33.4 | 1.315 | 1 1/2 | 1 | 7/8 | 3 | 2 3/16 | |
| 1 1/4 | 42.2 | 1.660 | 1 7/8 | 1 1/4 | 1 | 3 3/4 | 2 3/4 | |
| 1 1/2 | 48.3 | 1.900 | 2 1/4 | 1 1/2 | 1 1/8 | 3 | 4 1/2 | 3 1/4 |
| 2 | 60.3 | 2.375 | 3 | 2 | 1 3/8 | 4 | 6 | 4 3/16 |
| 2 1/2 | 73.0 | 2.875 | 3 3/4 | 2 1/2 | 1 3/4 | 5 | 7 1/2 | 5 3/16 |
| 3 | 88.9 | 3.500 | 4 1/2 | 3 | 2 | 6 | 9 | 6 1/4 |
| 3 1/2 | 101.6 | 4.000 | 5 1/4 | 3 1/2 | 2 1/4 | 7 | 10 1/2 | 7 1/4 |
| 4 | 114.3 | 4.500 | 6 | 4 | 2 1/2 | 8 | 12 | 8 1/4 |
| 5 | 141.3 | 5.563 | 7 1/2 | 5 | 3 1/8 | 10 | 15 | 10 5/16 |
| 6 | 168.3 | 6.625 | 9 | 6 | 3 3/4 | 12 | 18 | 12 5/16 |
| 8 | 219.1 | 8.625 | 12 | 8 | 5 | 12 | 24 | 16 5/16 |
| 10 | 273.1 | 10.750 | 15 | 10 | 6 1/4 | 15 | 30 | 20 3/8 |
| 12 | 323.9 | 12.750 | 18 | 12 | 7 1/2 | 18 | 36 | 24 3/8 |
Buttweld fittings from the ASTM B366 UNS NO8800 Incoloy 800 Series are subjected to rigorous testing and are carefully packaged to guard against damage during storage and transportation. To ensure complete traceability and compliance, each product is labeled with its heat number, size, grade and standard. To make sure every fitting satisfies the necessary mechanical and chemical standardd we perform a number of quality checks, including hydrostatic testing, PMI, ultrasonic testing, intergranular corrosion testing and dimensional inspection. This is important for premium materials such as ASTM B366 Incoloy 800HT Buttweld Fitting and UNS N08811 Seamless Fittings.
HDPE wraps, bubble layers, and sturdy wooden crates are used to protect fittings from moisture, impact, and scratches. As a reputable Incoloy 800HT Stub End Exporter, we manage both international delivery through dependable air and sea freight networks as well as domestic dispatch throughout India via road and rail. Bulk order management, urgent project-based dispatches, and ready stock supply are our areas of expertise. In-stock items can be shipped the same day, and custom orders are completed within the allotted lead time to guarantee on-time delivery.
Why Choose Us for Incoloy 800 Series Buttweld Fittings
Midland Alloys Inc. stands out as a trusted incoloy 800H buttweld fittings manufacturer and global supplier with deep industry expertise and a strong focus on quality. We deliver welded incoloy 800H pipe fittings that meet exact specifications, whether standard or custom built. We use top notch raw materials and cutting edge technology to manufacture each fitting. To meet ASTM, ASME, DIN and ANSI standards our team follows stringent quality control procedures. Even in harsh conditions we guarantee durability and a long service life with our sophisticated techniques and skilled engineers. We offer customisation, competitive pricing and on time delivery across the globe. Whether you’re sourcing Incoloy 800HT Fittings UNS N08811 or high-temperature elbows and reducers, we manufacture them precisely for your needs. Customers trust us for our commitment to quality, global reach and reliable service.
FAQs – Incoloy 800/800H/800HT Buttweld Fittings
Inconel has higher nickel content for extreme heat and corrosion. Incoloy offers good strength with more iron and chromium for high temp stability.
Available in elbows, tees, reducers, caps and stub ends from ½” NB to 48” NB as per ASTM B366.
800H has higher carbon than 800, offering better creep resistance and strength at high temperatures.
