Hastelloy C276 / C22 / B2 / B3 Welded Pipes & Tubes
Premium Nickel Alloy Welded Pipe Solutions for Corrosive Environments
Qinxin Metal manufactures and supplies high-performance Hastelloy C276, Hastelloy C22, Hastelloy B2, and Hastelloy B3 welded pipes and tubes for demanding industrial applications. Produced from premium nickel alloy materials and manufactured according to international standards, our welded tubing offers exceptional resistance to corrosion, oxidation, and aggressive chemical media.
These alloys are widely used in chemical processing, offshore engineering, pollution control systems, oil & gas facilities, power generation, pharmaceutical plants, and other harsh service environments where conventional stainless steels cannot provide sufficient performance.
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Hastelloy Alloy Comparison
| Grade | UNS Number | Main Characteristics |
|---|
| Hastelloy C276 | N10276 | Outstanding resistance to pitting, crevice corrosion, and chloride-containing environments |
| Hastelloy C22 | N06022 | Superior resistance to oxidizing and reducing chemicals, excellent versatility |
| Hastelloy B2 | N10665 | Exceptional resistance to hydrochloric acid and reducing media |
| Hastelloy B3 | N10675 | Improved thermal stability and enhanced resistance to stress corrosion cracking |
Key Features
- Excellent resistance to aggressive chemical environments
- Superior performance in oxidizing and reducing conditions
- Outstanding resistance to pitting and crevice corrosion
- High-temperature oxidation resistance
- Excellent fabrication and welding properties
- Long service life in harsh industrial applications
- Available in custom dimensions and specifications
Mechanical & Corrosion Advantages
Hastelloy C276
- Excellent resistance to wet chlorine gas, ferric chloride, and seawater
- Performs well in both oxidizing and reducing environments
- Widely used in chemical reactors, scrubbers, and offshore systems
Hastelloy C22
- Higher chromium content provides enhanced resistance to oxidizing acids
- Excellent protection against localized corrosion
- Ideal for chemical processing and environmental control equipment
Hastelloy B2
- Outstanding resistance to hydrochloric acid across a wide concentration range
- Excellent stability in reducing environments
- Suitable for acid production and chemical handling systems
Hastelloy B3
- Improved version of B2 alloy
- Better thermal stability and fabrication characteristics
- Reduced susceptibility to stress corrosion cracking
Available Size Range
| Dimension | Specification |
|---|
| Outside Diameter (OD) | 6 mm – 610 mm |
| Wall Thickness (WT) | 0.5 mm – 25 mm |
| Length | Random Length, Fixed Length, Cut-to-Length |
| Surface Finish | Pickled, Bright Annealed, Polished |
| End Type | Plain End, Beveled End |
| Manufacturing Process | TIG Welded, ERW Welded, Formed & Welded |
Applicable Standards
| Product Type | Standard |
|---|
| Welded Pipe | ASTM B619 |
| Welded Tube | ASTM B626 |
| General Nickel Alloy Products | ASME SB619 / SB626 |
| Material Specifications | ASTM B574, ASTM B575 |
Chemical Composition (wt.%)
| Element | Hastelloy C276 | Hastelloy C22 | Hastelloy B2 | Hastelloy B3 |
|---|
| Nickel (Ni) | Balance | Balance | Balance | Balance |
| Chromium (Cr) | 14.5 – 16.5 | 20.0 – 22.5 | ≤ 1.0 | 1.0 – 3.0 |
| Molybdenum (Mo) | 15.0 – 17.0 | 12.5 – 14.5 | 26.0 – 30.0 | 28.0 – 32.0 |
| Iron (Fe) | 4.0 – 7.0 | 2.0 – 6.0 | ≤ 2.0 | 1.0 – 3.0 |
| Tungsten (W) | 3.0 – 4.5 | 2.5 – 3.5 | — | — |
| Cobalt (Co) | ≤ 2.5 | ≤ 2.5 | ≤ 1.0 | ≤ 3.0 |
| Manganese (Mn) | ≤ 1.0 | ≤ 0.5 | ≤ 1.0 | ≤ 3.0 |
| Silicon (Si) | ≤ 0.08 | ≤ 0.08 | ≤ 0.10 | ≤ 0.10 |
| Carbon (C) | ≤ 0.01 | ≤ 0.015 | ≤ 0.02 | ≤ 0.01 |
| Phosphorus (P) | ≤ 0.04 | ≤ 0.02 | ≤ 0.04 | ≤ 0.03 |
| Sulfur (S) | ≤ 0.03 | ≤ 0.02 | ≤ 0.03 | ≤ 0.01 |
Corrosion Resistance Comparison
| Alloy Grade | Oxidizing Acids | Reducing Acids | Hydrochloric Acid | Seawater | Pitting & Crevice Corrosion |
| Hastelloy C276 | Excellent | Excellent | Very Good | Excellent | Excellent |
| Hastelloy C22 | Outstanding | Excellent | Good | Excellent | Outstanding |
| Hastelloy B2 | Poor | Outstanding | Excellent | Limited | Good |
| Hastelloy B3 | Moderate | Outstanding | Excellent | Limited | Good |
Typical Applications
Chemical Processing
- Heat exchangers
- Reactors
- Acid handling systems
- Storage tanks
Oil & Gas Industry
- Offshore platforms
- Sour gas processing equipment
- Subsea piping systems
Environmental Protection
- Flue gas desulfurization (FGD)
- Scrubbers
- Waste treatment facilities
Power Generation
- High-temperature piping
- Emission control systems
- Corrosion-resistant process lines
Why Choose Qinxin Metal?
- Factory-direct supply with competitive pricing
- Custom dimensions and fabrication services
- Cutting, machining, bending, and welding available
- EN 10204 3.1 Material Test Certificate provided
- Third-party inspection supported
- Fast production and global delivery
- Experienced exporter serving worldwide industrial projects
Qinxin Metal is committed to providing reliable Hastelloy welded pipe and tube solutions that meet the highest international quality standards and ensure long-term performance in the most demanding operating conditions.
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