Nickel Alloy Heat Exchanger Tubes

High-performance nickel alloy tubes for heat exchangers, petrochemical, oil & gas and high-temperature applications

DLSS Products Nickel Alloy Heat Exchanger Tubes

Nickel Alloy Heat Exchanger Tubes Supplier

DLSS supplies nickel alloy heat exchanger tubes designed for corrosive, high-temperature and high-pressure industrial environments. Our tubes are widely used in heat exchangers, condensers, petrochemical plants, refineries, chemical processing systems and offshore projects.

Nickel alloys such as Alloy 600, Alloy 625, Alloy 800, Alloy 825 and Hastelloy C276 are selected when standard stainless steel cannot meet corrosion resistance, acid resistance or high-temperature performance requirements.

Applications:
Heat exchangers, condensers, refineries, petrochemical plants, chemical processing, offshore and high-temperature systems

Standards:
ASTM B163 / ASTM B167 / ASTM B407 / ASTM B423 / ASTM B444 / ASTM B622

Materials:
Alloy 600 / Alloy 625 / Alloy 800 / 800H / 800HT / Alloy 825 / Hastelloy C276

Production Capability:
Seamless tubes / U bend tubes / cut length / pickled or polished surface

Quality Assurance:
PMI, hydrostatic testing, UT / ET, PT, dimensional inspection and EN10204 3.1 / 3.2 certification

Nickel Alloy Heat Exchanger Tube Specifications

Technical specifications for nickel alloy tubes used in corrosive and high-temperature heat exchanger applications

Item	Specification
Product Name	Nickel Alloy Heat Exchanger Tubes
Main Grades	Alloy 600 / 625 / 800 / 800H / 800HT / 825 / Hastelloy C276
Standards	ASTM B163 / B167 / B407 / B423 / B444 / B622
Tube Type	Seamless / Welded / U Bend / Heat Exchanger Tubes
Outside Diameter	6 mm – 114.3 mm or customized
Wall Thickness	0.5 mm – 12 mm or customized
Length	Fixed length / Random length / Cut length
Surface Finish	Pickled / Polished / Bright Annealed
Testing	PMI / Hydro Test / Eddy Current / UT / PT / Visual Inspection
Certificate	EN10204 3.1 / 3.2 / Third-party Inspection
Application	Heat Exchanger / Petrochemical / Refinery / Offshore / Chemical Processing
Delivery Time	7–35 days depending on grade, size and quantity
Packing	Export wooden case / Iron frame / Seaworthy packing

Nickel Alloy Grades We Supply

Select the right nickel alloy grade according to temperature, corrosion media and project requirements

Alloy 600 / UNS N06600

Nickel-chromium alloy with good oxidation resistance and resistance to chloride-ion stress corrosion cracking.

✓ Good high-temperature oxidation resistance
✓ Resistant to chloride-ion stress corrosion cracking
✓ Suitable for chemical and heat processing systems
✓ Used where stainless steel is not enough

Alloy 625 / UNS N06625

High-performance nickel alloy for aggressive corrosion, high strength and demanding heat exchanger applications.

✓ Excellent corrosion resistance
✓ Good oxidation resistance
✓ Suitable for seawater and chemical environments
✓ Strong performance in demanding industrial systems

Alloy 800 / 800H / 800HT

Nickel-iron-chromium alloy for high-temperature heat exchanger and furnace-related applications.

✓ High-temperature corrosion resistance
✓ Stable performance under elevated temperature
✓ Suitable for petrochemical and heat treatment systems
✓ Used in long-term high-temperature service

Alloy 825 / UNS N08825

Nickel-iron-chromium alloy with molybdenum and copper for strong resistance to acid and corrosive environments.

✓ Resistance to reducing and oxidizing acids
✓ Good resistance to stress corrosion cracking
✓ Suitable for chemical and petrochemical applications
✓ Common choice for corrosion-resistant heat exchanger tubes

Hastelloy C276 / UNS N10276

Nickel-molybdenum-chromium alloy for highly corrosive chemical processing and chloride-bearing environments.

✓ Strong resistance to oxidizing and non-oxidizing acids
✓ Excellent pitting and crevice corrosion resistance
✓ Suitable for chloride-bearing solutions
✓ Ideal for severe chemical processing environments

Typical Applications of Nickel Alloy Heat Exchanger Tubes

Built for corrosive, high-temperature and high-pressure industrial environments

Petrochemical & Refinery Plants

Nickel alloy tubes are used in refineries, petrochemical plants and chemical processing equipment where corrosion resistance and temperature stability are critical.

✓ Acid corrosion resistance
✓ High-temperature performance
✓ Suitable for aggressive process media
✓ Full certification support

Chemical Processing Systems

Nickel alloy heat exchanger tubes are suitable for chemical processing systems exposed to acids, chlorides and aggressive fluids.

✓ Resistance to oxidizing and reducing media
✓ Good pitting and crevice corrosion resistance
✓ Suitable for severe corrosion environments
✓ Long service life

Heat Exchangers & Condensers

Nickel alloy tubes are used in shell & tube heat exchangers, condensers, evaporators and reboilers where stainless steel may not provide enough corrosion resistance.

✓ Reliable heat transfer performance
✓ Stable tube-to-tubesheet fitting
✓ Strong dimensional control
✓ Long maintenance cycle

Offshore & High-Temperature Systems

Nickel alloy tubes support offshore, gas processing and high-temperature systems where pressure, corrosion and reliability are key project concerns.

✓ High strength under demanding conditions
✓ Strong corrosion resistance
✓ Suitable for offshore certification
✓ Reliable performance in harsh environments

Nickel Alloy Heat Exchanger Tube Project Cases

Proven supply experience for petrochemical, refinery, chemical processing and heat exchanger projects

Alloy 625 Tubes for Chemical Heat Exchanger Project

Material: Alloy 625 / UNS N06625 Application: Chemical Heat Exchanger Inspection: PMI / Hydro Test / Dimensional Inspection ✓ Strong corrosion resistance ✓ Full MTC traceability ✓ Third-party inspection support ✓ Export seaworthy packing

Alloy 825 Tubes for Petrochemical Processing Equipment

Material: Alloy 825 / UNS N08825 Application: Petrochemical Heat Exchanger Inspection: PMI / UT / Hydro Test ✓ Acid corrosion resistance ✓ Stable dimensional tolerance ✓ EN10204 3.1 / 3.2 certification ✓ Delivered for project schedule

Hastelloy C276 Tubes for Corrosive Chemical Application

Material: Hastelloy C276 / UNS N10276 Application: Chemical Processing System Inspection: PMI / PT / Hydro Test ✓ Excellent resistance to aggressive media ✓ Suitable for chloride-bearing environments ✓ Full inspection before shipment ✓ Strong packing protection

Send your specifications – we will respond within 24 hours

Customized Nickel Alloy Tube Solutions For Your Project

Flexible support for heat exchanger manufacturers, EPC contractors, stockists and project buyers

For Heat Exchanger Manufacturers

Stable tube quality, precise tolerance and reliable delivery for high-value heat exchanger production.

✓ Tight OD & WT tolerance
✓ Custom cut length
✓ U bend tube support
✓ Full inspection before shipment

For EPC Contractors & Project Buyers

Technical confirmation, documentation and delivery support for critical corrosion-resistant projects.

✓ Fast RFQ response
✓ Third-party inspection arrangement
✓ Full export documentation
✓ Project delivery tracking

For Stockists & Distributors

Flexible MOQ and stable supply to support local stock and special alloy market development.

✓ Flexible quantity support
✓ Common nickel alloy grades
✓ Export packing
✓ Custom marking available

Strict Quality Control For Nickel Alloy Tubes

Every tube is inspected to ensure material accuracy, corrosion performance and dimensional reliability

Material & Dimensional Inspection

PMI and spectrometer testing ensure correct material grade and dimensional accuracy.

Ring Gauge Inspection

Ensures dimensional accuracy and proper tube fitting.

Hydrostatic Pressure Testing

Verifies strength and leak-proof performance under pressure.

Penetrant Testing (PT)

Detects surface cracks and defects effectively.

Borescope Inspection

Ensures internal surface quality and detects inner defects.

Visual Inspection

Checks external surface quality and appearance.

All tubes are inspected according to ASTM, ASME, EN standards and customer requirements.

Frequently Asked Questions

Common questions about nickel alloy heat exchanger tubes

What are nickel alloy heat exchanger tubes used for?

Nickel alloy heat exchanger tubes are used in corrosive, high-temperature and high-pressure environments, including petrochemical plants, refineries, chemical processing systems, offshore projects and industrial heat exchangers.

Which nickel alloy grades do you supply?

DLSS supplies Alloy 600, Alloy 625, Alloy 800, 800H, 800HT, Alloy 825, Hastelloy C276 and other nickel alloy tube solutions according to project requirements.

What is the difference between Alloy 625 and Alloy 825?

Alloy 625 is often selected for aggressive corrosion and high-strength applications, while Alloy 825 is commonly used for acid corrosion resistance and chemical processing environments. The final selection depends on media, temperature, pressure and project requirements.

Can you provide third-party inspection?

Yes. DLSS supports third-party inspection by SGS, BV, TUV, DNV, ABS, LR and other inspection agencies according to project requirements.

What certificates can you provide?

We can provide EN10204 3.1 / 3.2 certificates, MTC, PMI reports, hydro test reports, dimensional inspection reports and third-party inspection documents.

Can you supply custom nickel alloy tube sizes?

Yes. DLSS supports custom OD, wall thickness, length, U bend tubes, cut length, special marking and export packing according to project drawings.

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Need Nickel Alloy Tubes For Your Next Project?

Send us your material grade, tube size, standard, quantity or project drawings.

Our technical team will help you confirm the most suitable nickel alloy tube solution for your operating environment.

Fast technical response within 24 hours