High Quality Incoloy Buttweld Pipe Fittings
800/800HT/825 • Strength • Sealing • Durability
Get a QuotePremium Incoloy 800/800HT/825 Buttweld Pipe Fittings by Ratnadeep Steel & Engg. Co.
Ratnadeep Steel & Engg. Co. is a leading manufacturer, exporter, & supplier of Incoloy 800/800HT/825 Buttweld Pipe Fittings. Produced from advanced nickel-iron-chromium alloys, these fittings offer excellent resistance to oxidation, carburization, and aqueous corrosion, along with reliable mechanical strength at elevated temperatures.
Incoloy grades 800, 800HT, and 825 are specially developed for long-term service in high-temperature and corrosive environments. These alloys provide excellent resistance to stress corrosion cracking, sulfur attack, and acidic media, making them highly suitable for petrochemical processing, heat treatment equipment, fertilizer plants, offshore platforms, and power generation industries. Our Incoloy buttweld fittings are manufactured with accurately machined bevels to ensure strong, full-penetration welds and consistent performance.
Engineered for smooth flow characteristics, minimal turbulence, and enhanced operational efficiency, our Incoloy buttweld pipe fittings are widely used in heat exchangers, process piping, pressure vessels, boilers, and high-temperature industrial systems. Choose Ratnadeep Steel & Engg. Co. for high-quality Incoloy 800/800HT/825 buttweld fittings that meet international standards and strict quality requirements.
- Incoloy 800 90 Deg Elbow
- Alloy 800HT 45 Deg Elbow
- Incoloy 825 180 Deg Elbow
- UNS N08800 LR Elbow
- UNS N08811 SR Elbow
- ANSI B16.9 Alloy 825 90 Degree Short Radius Elbow
- DIN 1.4876 45 Deg Long Radius Elbow
- ASME B16.9 Alloy 800 Equal Tee
- ASME SB366 Incoloy 800HT Pipe Tee
- Incoloy 825 Butt weld Tee
- UNS N08800 / N08811 Reducing Tee manufacturer
- DIN 2.4858 Unequal Tee
- Alloy UNS N08825 Straight Tee
- ASTM B366 Incoloy 800 Eccentric Reducer Supplier
- B16.9 Incoloy 800HT Eccentric Reducer
- SB366 Alloy 825 Eccentric Reducers
- UNS N08800 / N08811 Eccentric Reducer
- ANSI B16.9 Incoloy Alloy 800 Concentric Reducer Supplier
- ASME SB366 Incoloy 800HT Concentric Reducer
- ASTM B366 Incoloy 825 Concentric Reducers
- UNS N08800 / N08811 / N08825 Concentric Reducer
- ASME B16.9 Incoloy Alloy 800 Long Stub End Supplier
- ASTM B366 Incoloy 800HT Long Stub Ends
- Alloy 825 Lap Joint Stub End
- UNS N08800 / N08811 / N08825 Long Stub End
- Incoloy DIN 1.4876 Long Stub End
- ASTM B366 Incoloy 800 Short Stub End Supplier
- ASME B16.9 Incoloy Alloy 800HT Short Stub Ends
- Alloy UNS N08800 / N08811 / N08825 Short Stub Ends
- DIN 1.4876 Short Stub End
- ASTM B366 / SB366 Incoloy 800 Pipe Cap Supplier
- ASME B16.9 Incoloy Alloy 800HT End Pipe Cap
- Incoloy Alloy 825 Pipe End Cap
- UNS N08825 Buttweld Cap
- DIN 1.4876 End Cap
- ASTM B366 / SB366 Incoloy 800 Equal Cross
- ASME B16.9 Incoloy Alloy 800HT Buttweld Cross
- UNS N08800 / N08811 Unequal Cross
- DIN 1.4876 Pipe Cross
- Incoloy 825 Reducing Cross
- ASME SB 366 Incoloy Alloy 800 Pipe Bend Exporter
- B16.9 Incoloy 800HT Piggable Bend
- Incoloy 825 U Bend
- UNS N08800 Long Radius Bend
- DIN 2.4858 Buttweld Bend
CHEMICAL COMPOSITION OF INCOLOY ALLOY SEAMLESS AND WELDED PIPE FITTINGS
| Element | Incoloy 800 | Incoloy 800H | Incoloy 825 |
|---|---|---|---|
| Ni | 30-35 | 30-35 | 38.0 – 46.0 |
| Fe | 39.5 min | 39.5 min | 22.0 min |
| Cr | 19-23 | 19-23 | 19.5 – 23.5 |
| Cu | 0.75 max | 0.75 max | 1.5 – 3.0 |
| Ti | 0.15-0.60 | 0.15-0.60 | 0.6 – 1.2 |
| Al | 0.15-0.60 | 0.15-0.60 | 0.2 max |
| C | 0.1 max | 0.05-0.1 | 0.05 max |
| Mn | 1.5 max | 1.5 max | 1.0 max |
| S | 0.015 max | 0.015 max | 0.015 max |
| Si | 1.0 max | 1.0 max | 0.5 max |
| Mo | – | – | 2.5 – 3.5 |
MECHANICAL PROPERTIES OF ASME SB366 INCOLOY BUTTWELD PIPE FITTINGS
| Grade | Tensile Strength | Yield Strength (0.2% Offset) | Elongation |
|---|---|---|---|
| Incoloy 800/800HT | Psi – 75,000, MPa – 520 | Psi – 30,000, MPa – 205 | 30% |
| Incoloy 825 | Psi – 80,000, MPa – 550 | Psi – 32,000, MPa – 220 | 30% |
SPECIFICATION OF INCOLOY ALLOY BUTTWELD FITTINGS
| Specifications | ASTM B366 / ASME SB366 |
|---|---|
| Dimensions | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43, BS4504, BS4504, BS1560, BS10 ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799 |
| Size | Seamless Butt Weld Fittings: ½” to 10″ | Welded Butt Weld Fittings: ½” to 48″ |
| Schedule | SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS available with NACE MR 01-75 |
| Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
| Type | Seamless / ERW / Welded / Fabricated |
| Thickness | 20 Swg., 18 Swg., 16 Swg., 14 Swg., 12 Swg., 10 Swg., & Sch. 10, Sch. 40, Sch. 80 etc. |
800/800HT/825 INCOLOY ASTM B366 BUTTWELD FITTINGS EQUIVALENT GRADES
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN | OR |
|---|---|---|---|---|---|---|---|---|
| Incoloy 800 | 1.4876 | N08800 | NCF 800 | NA 15 | 3M670 | Z8NC32-21 | X10NiCrAlTi32-20 | XH32T |
| Incoloy 800HT | 1.4859 / 1.4876 | N08811 | NCF 800HT | NA 15(HT) | 3M670 | – | X8NiCrAlTi32-21 | XH32T |
| Incoloy 825 | 2.4858 | N08825 | NCF 825 | NA 16 | 3Π703 | NFE30C20DUM | NiCr21Mo | XH38BT |
PHYSICAL PROPERTIES OF INCOLOY 800/800HT/825 PIPE FITTINGS
| Density lbm/in³ | Thermal Conductivity (BTU/h ft. °F) | Electrical Resistivity (in × 10⁻⁶) | Modulus of Elasticity (psi × 10⁶) | Coefficient of Thermal Expansion (in/in)/ °F × 10⁻⁶ | Specific Heat (BTU/lb/ °F) | Melting Range (°F) |
|---|---|---|---|---|---|---|
| at 68°F: 0.285 | 9.4 at 212°F 12.4 at 932°F |
28.3 at 68°F 39.4 at 752°F 49.6 at 1652°F |
28 | 9.4 at 32 – 212°F 10.2 at 32 – 1000°F 10.4 at 32 – 1500°F |
0.1200 at 68°F to 212°F | 2500 to 2590 |
💡 Practical Difference in Use
Use Incoloy 800/800HT/825 Buttweld Pipe Fittings when: excellent resistance to oxidation, carburization, and aqueous corrosion is required along with stable mechanical strength at elevated temperatures. These nickel-iron-chromium alloys are engineered for long-term service in corrosive and high-temperature industrial environments. → Example: petrochemical plants, fertilizer units, heat exchangers, boilers, offshore platforms, acid processing systems, and power generation facilities.
Applications of Incoloy 800/800HT/825 Buttweld Pipe Fittings
Incoloy Buttweld Pipe Fittings are designed for reliable performance in environments involving high temperatures, acidic media, and corrosive process conditions.
- Chemical & Fertilizer Industries: Acid handling systems, chemical processing pipelines, and reactors.
- Petrochemical & Offshore: Corrosion-resistant piping for offshore and marine environments.
- Power & Heat Transfer Systems: Boilers, heat exchangers, and high-temperature process piping.
When to Choose Incoloy 800/800HT/825?
These Incoloy grades are ideal for applications requiring long-term stability, corrosion resistance, and strength under continuous high-temperature and chemically aggressive service conditions.
Choose Incoloy 800/800HT/825 when:
- Equipment operates continuously at elevated temperatures
- Resistance to oxidation, carburization, and acidic corrosion is essential
- Long service life is required in petrochemical or fertilizer plants
- Welded piping systems must maintain strength over prolonged exposure
- Used in heat exchangers, boilers, offshore, or chemical processing systems
Industries That Use Incoloy 800/800HT/825 Buttweld Pipe Fittings
Incoloy fittings are widely used in industries where corrosion resistance, high-temperature stability, and long-term operational reliability are required.
Designed for corrosive chemical processing environments.
Uses
Acid handling systems, chemical reactors, and process piping.
Why Incoloy?
Excellent resistance to acidic corrosion and stress corrosion cracking ensures extended service life.
Preferred for corrosion-resistant offshore and marine applications.
Uses
Process piping, offshore platforms, and marine heat exchange systems.
Why Incoloy?
Provides reliable resistance to chloride environments and high-temperature oxidation.
Used in systems requiring thermal stability and corrosion resistance.
Uses
Boilers, heat exchangers, and high-temperature piping systems.
Why Incoloy?
Maintains mechanical strength and corrosion resistance under prolonged high-temperature service.
Usage Guide for Incoloy 800/800HT/825 Buttweld Pipe Fittings
Directional flow change in high-temperature and corrosion-resistant piping systems.
Choose Elbow when
- 45°, 90°, or 180° directional change is required
- Piping operates under elevated temperatures or corrosive conditions
- Stable mechanical strength and oxidation resistance are required
- Used in petrochemical, fertilizer, or heat transfer systems
Reliable branch connections for corrosive and high-temperature service pipelines.
Choose Tee when
- Branch or distribution lines are required
- Resistance to acidic media and stress corrosion is critical
- Long-term durability is required under continuous operation
- Used in chemical processing or fertilizer plants
Prevents air accumulation while reducing pipe diameter in process piping.
Choose Eccentric Reducer when
- Used in horizontal pipelines or pump suction lines
- Corrosion resistance and dimensional stability are required
- Thermal expansion must be accommodated
- Applied in petrochemical or chemical process systems
Centered diameter reduction for vertical or high-temperature pipelines.
Choose Concentric Reducer when
- Perfect pipe alignment is required
- Used in vertical piping systems
- Uniform flow transition is critical
- Installed in boilers or heat exchangers
Facilitates dismantling in corrosive and high-temperature flange joints.
Choose Long Stub End when
- Frequent maintenance or inspection is required
- High corrosion resistance at flange connections is essential
- Large-diameter piping systems are installed
- Used in chemical, fertilizer, or offshore systems
Compact lap joint solution for space-restricted process piping.
Choose Short Stub End when
- Limited installation space is available
- Cost-effective flange connections are required
- Used in heat exchangers or chemical processing units
- Resistance to corrosion and thermal stress is essential
Secure pipe end sealing in corrosive and elevated-temperature environments.
Choose Pipe Cap when
- Pipe ends must be closed or isolated
- Used during pressure testing or future system expansion
- Leak-proof performance under corrosive conditions is required
- Exposed to acidic or high-temperature environments
Four-directional flow distribution in complex process piping systems.
Choose Cross when
- Multiple branch connections are required
- Used in chemical or fertilizer processing plants
- Corrosion-resistant welded joints are essential
- Stable performance at elevated temperatures is required
Large-radius directional change for smooth flow in process piping systems.
Choose Pipe Bend when
- Gradual change in flow direction is required
- Used in boilers, heat exchangers, or chemical plants
- Reduced pressure loss and flow efficiency are critical
- Long-term corrosion resistance is required
Our Buttweld Pipe Fittings are manufactured using advanced processes and undergo extensive quality checks to ensure flawless weldability, durability, and long service life. Each fitting is thoroughly inspected using key NDT techniques such as radiographic testing (RT), ultrasonic testing (UT), hydrostatic testing, and visual/dimensional examination. We also perform detailed chemical composition analysis and mechanical property testing to ensure material compliance with strict industry standards.
Throughout the forming and welding stages, every buttweld fitting is monitored closely to eliminate defects such as misalignment, surface irregularities, and wall-thickness variations. This ensures perfect joint integrity and high-performance reliability in pipelines carrying high temperatures, pressures, and corrosive media. All our buttweld fittings fully comply with ASME, ASTM, MSS-SP, and related global specifications, making them a preferred choice for critical piping systems worldwide.
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