Alloy C22 Seamless Tube

Alloy C22 Seamless Tube – Precision-Engineered for Extreme Corrosion Resistance

TSM Technology delivers enterprise-grade Alloy C22 Seamless Tube with 100–200 tons monthly capacity, manufactured in our 50,000㎡ AS9100D-certified facility. Our seamless tubes have no weld line weaknesses, consistent metallurgical structure and tensile strength ≥690 MPa with no danger of weld degradation. We provide tight tolerances to ASTM B622/B829 standards, thorough PMI & ultrasonic testing and full MTC/SGS/TUV documentation with 14+ years of worldwide expertise in 70+ countries. TSM is a trusted solution supplier for chemical processing, pharmaceutical and pollution control applications with delivery time of 20-45 days and MOQ of 50 kg.

What Is Alloy C22 Seamless Tube?

The items are also known as Hastelloy C-22. They are top-grade nickel chromium molybdenum tungsten pipes that are seamless.

It provides increased protection against stress corrosion cracking and pitting and crevice corrosion in hostile situations.

The seamless construction removes heat-affected zone failures. This makes them ideal for high-pressure systems and ultra-pure chemical transport.

Their uniform grain structure ensures consistent performance where standard materials fail.

Specification

Physical and Chemical Properties

Product Standards

Our tubes comply with rigorous international specifications:

• ASTM B622 – Standard for seamless nickel alloy pipes
• ASTM B829 – Standard for seamless nickel alloy tubes
• ASME SB622 – Pressure vessel code compliance
• DIN 17458 / EN 10216-5 – European standards
• JIS G3459 – Japanese industrial standards
• ISO 9001, AS9100D, AS9120 – Quality management certifications

Full traceability with MTC per EN 10204 3.1 is provided with every shipment.

Application

Alloy C22 Seamless Tube excels in these critical industrial scenarios:

Chemical Processing

Better pitting resistance for your reactors and heat exchangers with chloride polluted organic acids.

Pharmaceuticals and Biotechnology

Aggressive CIP/SIP cleaning cycles damage fermentation containers and high-purity water systems.

Equipment for Pollution Control

FGD systems deal with the “green death” environment of sulfuric acid and chloride-laden liquors.

Oil & Gas

Downhole components operate safely in sour gas environments with H₂S present.

Marine Engineering

Seawater cooling systems avoid crevice corrosion in stagnant zones.

Factory

TSM Technology's modern manufacturing complex features:

Dedicated seamless tube production lines with cold pilgering equipment

In-house heat treatment furnaces for precise annealing control

Advanced NDT laboratory with digital radiography and ultrasonic systems

Climate-controlled storage facilities maintaining material integrity

ISO-certified quality management systems across all production stages

Our Alloy C22 Seamless Tube facility welcomes audits from clients worldwide, demonstrating transparency in our processes.

What Is the Production Process of Alloy C22 Seamless Tube?

Step 1: Raw Material Selection

We get high purity nickel alloy ingots from certified vendors, validated by PMI testing.

Step 2: Hot Extrusion

Seamless hollow tubes are produced by forcing hot billets through precise dies.

Step 3: Cold Drawing

The desired dimensions and improved mechanical qualities are obtained by several passes through tungsten carbide dies.

Step 4: Annealing of the Solution

Tubes are heated to 1150-1177°C and then quenched swiftly to retain corrosion resistance.

Step 5: Surface Treatment 

Bright annealing or pickling eliminates surface oxides for optimum polish.

Step 6: Check final

Quality ensured by full NDT, hydrostatic testing and dimensional checks.

Quality Inspection

Every tube undergoes rigorous testing in our certified laboratory:

• Positive Material Identification (PMI) – Confirms chemical composition
• Eddy Current Testing – Detects surface and near-surface defects
• Ultrasonic Testing – Identifies internal flaws or wall thinning
• Hydrostatic Testing – Verifies pressure containment to specified ratings
• Intergranular Corrosion Test (ASTM G28) – Ensures grain boundary integrity
• Dimensional Inspection – Guarantees ASTM B829 tolerance compliance

Complete documentation (MTC, QAC, ITP) accompanies every order.

Why Choose TSM Technology?

Proven Manufacturing Excellence

Our 60,000㎡ facility houses over 100 precision machines delivering 100–200 tons monthly.

Aerospace-Grade Certification

AS9100D qualification demonstrates our commitment to precision and traceability.

Global Reach

We've successfully served clients in 70+ countries for over 14 years.

Full-Service Customization

From non-standard sizes to specialized surface finishes, we adapt to your requirements.

Strict Quality Assurance

ISO 9001 and AS9120 certifications back our comprehensive testing protocols.

Technical Expertise

Our R&D team provides consultation on material selection and application optimization.

Fast, Reliable Delivery

Strategic inventory and efficient logistics ensure 20–45 day turnaround times.

Package and Shipping

Protection During Transit

Each tube receives:

• Plastic cap protection on both ends
• Individual wrapping in waterproof film
• Bundling with steel strapping for stability
• Wooden crate or plywood box packaging for export
• Clearly marked with heat numbers and specifications

Shipping Options

We will ship your goods by sea, air or express, depending on your urgency and volume needs.

FAQ 

Q: What is the difference between C22 and C276 seamless tubes?

A: C22 has a greater chromium concentration (22% vs 16%) and provides much superior protection in oxidising conditions such as nitric acid and moist chlorine.

Q. Is this product suitable for high temperature applications?

A. Yes, it is stable up to 1250°F (677°C), but is chosen mostly because of its excellent resistance to water corrosion.

Q: Why should I pick seamless vs welded C22 tubes? 

A: Seamless Tubes have a consistent grain structure and do not have the possibility of weld deterioration, making them safer for high-pressure systems and ultra-pure chemical transfer.

Q: Is this material resistant to acid gas (H2S)?

A: Yes. Alloy C22 has excellent resistance to sulphide stress cracking and is commonly utilised in downhole oil and gas applications.

Q: What paperwork is needed for procurement?

A: Demand Mill Test Certificate (MTC) to EN 10204 3.1 including heat number, chemical composition and mechanical test results. TSM offers full traceability documentation.

Q: Do you offer sample tubes for testing?

A: Yes, we can provide sample pieces with full certification for your evaluation before bulk orders.

Contact Us

Ready to source reliable Alloy C22 Seamless Tube for your critical applications? Reach out to our technical team at info@tsmnialloy.com for quotations and engineering support today.