High Quality Hastelloy Buttweld Pipe Fittings
C22/C276 • Strength • Sealing • Durability
Get a QuotePremium Hastelloy C22/C276 Buttweld Pipe Fittings by Ratnadeep Steel & Engg. Co.
Ratnadeep Steel & Engg. Co. is a leading manufacturer, exporter, and supplier of Hastelloy C22 and Hastelloy C276 Buttweld Pipe Fittings, designed for use in highly corrosive and extreme service environments. Manufactured from premium nickel-chromium-molybdenum alloys, these fittings offer exceptional resistance to pitting, crevice corrosion, oxidation, and stress corrosion cracking, even in chloride-rich and acidic conditions.
Hastelloy C276 Buttweld Fittings are widely recognized for their outstanding resistance to wet chlorine, hypochlorites, ferric and cupric chlorides, sulfuric acid, and other aggressive chemicals. Hastelloy C22 Buttweld Pipe Fittings provide enhanced protection against localized corrosion, making them ideal for mixed oxidizing and reducing environments. Both grades maintain excellent mechanical strength, thermal stability, and weldability across a wide temperature range.
Our precision-engineered Hastelloy C22 / C276 buttweld pipe fittings feature accurately machined bevel ends to ensure strong weld joints, smooth flow characteristics, and long-term operational reliability. These fittings are extensively used in chemical processing plants, pollution control systems, pharmaceutical equipment, pulp and paper industries, heat exchangers, offshore platforms, and oil & gas facilities. Choose Ratnadeep Steel & Engg. Co. for internationally compliant Hastelloy buttweld fittings that deliver superior corrosion resistance and dependable performance.
- Hastelloy C22 90 Deg Elbow
- Hastelloy C276 45 Deg Elbow
- UNS N06022 180 Deg Elbow
- UNS N10276 LR Elbow
- DIN 2.4602 SR Elbow
- ANSI B16.9 Alloy C22 90 Degree Short Radius Elbow
- Hastelloy C276 45 Deg Long Radius Elbow
- ASME B16.9 Hastelloy C22 Equal Tee
- UNS N10276 Pipe Tee
- DIN 2.4602 Butt weld Tee
- ASME SB366 Hastelloy C276 Reducing Tee manufacturer
- DIN 2.4819 Unequal Tee
- Alloy UNS N10276 Straight Tee
- ASTM B366 Hastelloy C22 Eccentric Reducer Supplier
- B16.9 Hastelloy C276 Eccentric Reducer
- Alloy UNS N06022 / N10276 Eccentric Reducers
- DIN 2.4602 / 2.4819 Eccentric Reducer
- ANSI B16.9 Hastelloy C22 Concentric Reducer Supplier
- ASME SB366 Hastelloy C276 Concentric Reducer
- Alloy UNS N06022 / N10276 Concentric Reducers
- DIN 2.4602 / 2.4819 Concentric Reducer
- ASME B16.9 Hastelloy Alloy C22 Long Stub End Supplier
- ASTM B366 Hastelloy C276 Long Stub Ends
- Alloy UNS N06022 / N10276 Lap Joint Stub End
- DIN 2.4602 / 2.4819 Long Stub End
- ASTM B366 / SB366 Hastelloy C22 Short Stub End Supplier
- ASME B16.9 Hastelloy Alloy C276 Short Stub Ends
- Alloy UNS N06022 / N10276 Short Stub Ends
- DIN 2.4602 / 2.4819 Short Stub End
- ASTM B366 / SB366 Hastelloy C22 Pipe Cap Supplier
- ASME B16.9 Hastelloy Alloy C276 End Pipe Cap
- Alloy UNS N06022 Pipe End Cap
- UNS N10276 Buttweld Cap
- DIN 2.4602 / 2.4819 End Cap
- ASTM B366 / SB366 Hastelloy C22 Equal Cross
- ASME B16.9 Hastelloy Alloy C276 Buttweld Cross
- Alloy UNS N06022 / N10276 Unequal Cross
- DIN 2.4602 / 2.4819 Reducing Cross
- ASME SB 366 Hastelloy Alloy C22 Pipe Bend Exporter
- B16.9 Hastelloy C276 Piggable Bend
- Alloy UNS N06022 / N10276 U Bend
- DIN 2.4602 Long Radius Bend
- DIN 2.4819 Buttweld Bend
CHEMICAL COMPOSITION OF HASTELLOY C22/C276 SEAMLESS AND WELDED PIPE FITTINGS
| Grade | Ni | C | Mo | Mn | Si | Fe | P | S | Co | Cr | W | V |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hastelloy C22 | Balance | 0.010 max | 12.5-14.5 | 0.50 max | 0.08 max | 2-6 | 0.02 max | 0.02 max | 2.5 max | 20-22.5 | 2.5-3.5 | 0.35 max |
| Hastelloy C276 | Balance | 0.01 max | 15-17 | 1.0 max | 0.08 max | 4-7 | 0.04 max | 0.03 max | 2.5 max | 14.5-16.5 | 3-4.5 | 0.35 max |
MECHANICAL PROPERTIES OF ASME SB366 HASTELLOY BUTTWELD PIPE FITTINGS
| Grade | Density | Melting Point | Tensile Strength | Yield Strength (0.2% Offset) | Elongation |
|---|---|---|---|---|---|
| Hastelloy C22 | 8.69 g/cm³ | 1399 °C (2550 °F) | Psi – 100,000, MPa – 690 | Psi – 45,000, MPa – 310 | 45% |
| Hastelloy C276 | 8.89 g/cm³ | 1370 °C (2500 °F) | Psi – 115,000, MPa – 790 | Psi – 52,000, MPa – 355 | 40% |
SPECIFICATION OF HASTELLOY 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. |
C22/C276 HASTELLOY ASTM B366 BUTTWELD FITTINGS EQUIVALENT GRADES
| STANDARD | UNS | WNR. | EN | JIS | GOST | Other |
|---|---|---|---|---|---|---|
| Hastelloy C22 | N06022 | 2.4602 | NiCr21Mo14W | NW 6022 | – | – |
| Hastelloy C276 | N10276 | 2.4819 | NiMo16Cr15W | NW 0276 | XH6SMBY | 3n760 |
PHYSICAL PROPERTIES OF HASTELLOY C22 & C276 BUTTWELD FITTINGS
| Property | Hastelloy C22 | Hastelloy C276 |
|---|---|---|
| Density | 0.314 lb/in³ (8.69 g/cm³) | 0.321 lb/in³ (8.89 g/cm³) |
| Melting Point | 2550 °F (1399 °C) | 2415-2500 °F (1323-1371 °C) |
| Specific Heat | 0.1 Btu/lb/°F (32-212°F) | 0.102 Btu/lb/°F (Room temp) / 427 J/kg·K |
| Thermal Conductivity @ Room Temp | 70 Btu·in/ft²·hr·°F | 65-71 Btu·in/ft²·hr·°F (0-100°F) / 9.4-10.2 W/m·K |
| Mean Coefficient of Thermal Expansion | 6.9 µin/in·°F | 6.2-7.4 µin/in·°F (75-1000°F) / 11.2-13.4 ×10⁻⁶ m/m·K |
| Modulus of Elasticity (Tension) | 29.9 × 10⁶ psi | – |
| Electrical Resistivity @ Room Temp | – | 51 µΩ·in (75°F) / 1.30 µΩ·m (24°C) |
💡 Practical Difference in Use
Use Hastelloy C22 / C276 Buttweld Pipe Fittings when: extreme resistance to corrosion, pitting, crevice corrosion, and stress corrosion cracking is required in highly aggressive chemical environments. These nickel-chromium-molybdenum alloys perform reliably in both oxidizing and reducing conditions. → Example: chemical processing plants, pollution control systems, pharmaceutical equipment, offshore installations, and acid handling units.
Applications of Hastelloy C22 / C276 Buttweld Pipe Fittings
Hastelloy buttweld pipe fittings are engineered for long-term performance in severe chemical and high-temperature environments.
- Chemical Processing: Reactors, heat exchangers, and chemical transfer pipelines.
- Pollution Control: Flue gas desulfurization units and scrubber systems.
- Pharmaceutical & Specialty Chemicals: Corrosion-resistant process piping.
When to Choose Hastelloy C22 / C276?
These grades are ideal for applications involving highly corrosive chemicals, mixed acid environments, and extreme operating conditions.
Choose Hastelloy C22 / C276 when:
- Exposure to aggressive acids, chlorides, or oxidizing media is severe
- Maximum resistance to pitting and crevice corrosion is required
- High temperature strength and weldability are critical
- Equipment must operate reliably in both oxidizing and reducing environments
- Used in chemical, pharmaceutical, or offshore process systems
Industries That Use Hastelloy C22 / C276 Buttweld Pipe Fittings
Hastelloy fittings are widely used in industries demanding superior corrosion resistance and operational reliability.
Designed for highly corrosive chemical environments.
Uses
Chemical reactors, acid handling lines, and heat exchangers.
Why Hastelloy?
Outstanding resistance to acids, chlorides, and chemical attack.
Used in harsh environmental conditions.
Uses
Scrubber systems, offshore piping, and waste treatment units.
Why Hastelloy?
Superior durability and corrosion resistance in extreme conditions.
Ensures purity and corrosion-free processing.
Uses
Pharmaceutical reactors and specialty chemical pipelines.
Why Hastelloy?
Maintains integrity and cleanliness in sensitive applications.
Usage Guide for Hastelloy C22 / C276 Buttweld Pipe Fittings
Directional flow change in highly corrosive and high-temperature chemical systems.
Choose Elbow when
- 45°, 90°, or 180° directional change is required
- System is exposed to acids, chlorides, or oxidizing media
- Resistance to pitting and crevice corrosion is critical
- Used in chemical processing or pharmaceutical plants
Strong branch connections in severe chemical and mixed-acid environments.
Choose Tee when
- Branch or distribution piping is required
- Exposure to aggressive chemicals is continuous
- High-temperature and pressure resistance is needed
- Used in chemical reactors and process piping
Prevents vapor or gas entrapment in corrosive horizontal piping systems.
Choose Eccentric Reducer when
- Installed on horizontal pipelines or pump suction lines
- Handling corrosive or high-temperature fluids
- Flow stability and cavitation control are required
- Used in chemical processing and acid handling systems
Uniform diameter transition in vertical or pressurized process piping.
Choose Concentric Reducer when
- Vertical pipeline alignment is required
- Uniform flow transition is essential
- High pressure and temperature conditions exist
- Used in chemical and pharmaceutical plants
Facilitates easy dismantling in corrosion-resistant lap joint assemblies.
Choose Long Stub End when
- Frequent inspection or maintenance is required
- Maximum corrosion resistance at flange joints is critical
- Large-diameter or high-pressure pipelines are used
- Installed in chemical processing units
Compact lap joint solution for corrosive and space-limited installations.
Choose Short Stub End when
- Installation space is limited
- Economical corrosion-resistant joints are required
- Used in pharmaceutical or specialty chemical plants
- High corrosion resistance is essential
Seals pipe ends in highly corrosive and high-temperature systems.
Choose Pipe Cap when
- Pipe ends require secure closure
- Used during pressure testing or future system expansion
- Leak-tight sealing in aggressive chemical environments is required
- Installed in chemical and process piping
Multi-directional flow distribution in complex chemical piping networks.
Choose Cross when
- Four-way branch connections are required
- Used in chemical reactors and process plants
- High-strength welded joints are critical
- Resistance to aggressive chemical attack is needed
Large-radius bends for smooth flow in corrosive and high-temperature systems.
Choose Pipe Bend when
- Gradual directional change is required
- Pressure drop must be minimized
- Used in chemical and pharmaceutical piping
- Long-term corrosion resistance is essential
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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