Incoloy 800 Seamless Tube

Incoloy 800 Seamless Tube – High-Performance Alloy for Extreme Environments

These Incoloy 800 Seamless Tube high quality nickel-chromium-iron alloy tubes are manufactured by TSM Technology using seamless construction with no weld-line weak spots. Our accredited factory covers an area of 50,000㎡ and has a manufacturing capacity of 100~200 tonnes per month. Our tubes are offered in diameters from OD 6–219 mm with wall thickness 0.5–15 mm, in compliance with ASTM B163 and ASME SB163. All parts are checked thoroughly with ultrasonic and eddy current, therefore there are no problems. TSMTechnology's certifications to ISO 9001, AS9100D and AS9120 provide material traceability and consistent quality for your important applications.

What are Incoloy 800 Seamless Tubes?

The product is a high-grade iron-nickel-chromium alloy (UNS N08800) formulated for demanding heat and corrosive situations. Welded and seamless tubes are different. Seamless tubes are created via hot extrusion or rotary piercing. This process yields a homogenous metallurgical structure with no heat impacted zones.

You'll benefit from superior resistance to:

• Chloride-induced stress corrosion cracking
• High-temperature oxidation up to 1100°F (593°C)
• Carburization in petrochemical processes
• Steam-side corrosion in power generation

This seamless construction prevents premature failure where standard 300-series stainless steels degrade rapidly.

Specification

Physical and Chemical Properties

Chemical Composition

Mechanical Properties

Product Standards

TSM Technology manufactures all tubes in strict compliance with international specifications:

• ASTM B163 – Seamless Nickel and Nickel Alloy Condenser and Heat-Exchanger Tubes
• ASTM B407 – Seamless Nickel-Iron-Chromium Alloy Pipe and Tube
• ASTM B829 – Seamless UNS N08800, N08810, N08811 Alloy Pipe
• ASME SB163 – Boiler and Pressure Vessel Code
• DIN 17458 / EN 10216-5 – European standards for seamless steel tubes

Each batch comes with full MTC (Mill Test Certificate), plus third-party verification from SGS, BV, or TUV upon request.

What are the Features of Incoloy 800 Seamless Tube?

Your processes need materials that can function under pressure. Here’s the thing with these tubes:

• Seamless Integrity No weld seams imply no weak areas or possible failure lines
• Excellent Oxidation Resistance: Maintains surface stability after extended exposure over 500°C
• High creep strength: Retains mechanical qualities after extended high temperature service
• Carburization Resistance: Resists diffusion of carbon in cracking settings in the petrochemical industry
• Chloride SCC Resistance: Better than Austenitic Stainless Steels against Stress Corrosion Cracking
• Stable austenitic structure No embrittlement after long thermal cycling

Application

1. Petrochemical and Chemical Processing

You want tubes that can take a beating in ethylene furnace quench boilers and heat exchangers. These tubes are resistant to carburising atmospheres and will withstand high pressure steam without loss of structural integrity.

2. Power Production

In nuclear and fossil-fuel facilities these tubes are superheater and reheater elements; Their resistance to steam-side corrosion and thermal creep provides safe long term operation under cyclic stresses.

3. Industrial heat treatment and heating

Radiant tubes, muffles and retorts are critical to your production operations. Seamless design avoids gas leakage and resists severe oxidation in continuous annealing and carbonising furnaces.

Factory 

TSM Technology’s state-of-the-art manufacturing facility features:

• Advanced Extrusion Lines: Seamless Tube Production with Accurate Dimensional Control
• Multi-Stage Annealing Furnaces: Uniform Heat Treatment and Best Grain Structure
• Complete Testing Lab Spectrometers, tensile testers, NDT equipment
• Climate-Controlled Storage: Protecting Finished Goods from Contamination Before Shipment
• Our facility is built to worldwide aerospace and nuclear industry standards, a testament to our dedication to excellence.

Production and Processing Technology

What is the Production Process of Incoloy 800 Seamless Tube?

TSM Technology's precision manufacturing ensures that each tube is manufactured to precise specifications:

Step 1: Choosing Raw Materials

Our high purity nickel chromium iron alloys are sourced solely from verified vendors. Every batch is tested for chemical composition.

Step 2: Hot Extrusion / Rotary Piercing 

Billets are heated to the correct forging temperature and punctured or extruded via precise dies. This is the seamless construction.

Step 3: Cold Drawing (Optional)

Tighter tolerances and better surface polish are obtained by numerous passes of cold-drawing with interim annealing.

Step 4: Solution heat treatment

The tubes are heat treated in 1050-1150°C range and immediately chilled. This will dissolve carbides and provide you the highest corrosion resistance.

Step 5: Treatment of surface

We provide Bright annealing, Acid pickling or mechanical polishing according to your needs.

Step 6: Final inspection of dimensions

All tubes are checked for OD, WT, straightness and length using laser micrometres and ultrasonic gauges.

Quality Inspection

Non-Destructive Testing (NDT)

• Ultrasonic Testing (UT) ASTM E213 : 100% volumetric fault detection.
• Eddy Current Testing (ET) : Detects surface and near surface defects
• Hydrostatic Test: Verification of pressure integrity at 1.5× operating pressure

Metallurgical Examination

• ASTM E112 Grain Size Measurement: Usually grade 5 or coarser for high-temperature versions
• ASTM A262 Practice E Intergranular Corrosion (IGC) Test
• Positive Material Identification (PMI): confirms Ni-Cr-Fe ratios are in accordance with UNS N08800 standards

Documentation

Every shipment includes:

• Mill Test Certificate (MTC)
• Inspection Test Plan (ITP)
• Material Traceability Report (MTR)
• Third-party certificates (SGS/BV/TUV) when required

Why Choose TSM Technology?

Proven Manufacturing Excellence

Experience of 14+ years and exports to 70+ countries, we understand your high stakes needs.

Quality Systems Certified

Our certifications in ISO 9001, AS9100D and AS9120 are proof of our dedication to aerospace-grade accuracy and dependability.

State-of-the-art manufacturing plant

We have 100+ precision equipment, complete process control from melting to final inspection, based on 50,000㎡ plant.

Reactive Customer Service

We provide quick technical consulting, flexible customisation and solid after-sales support. Your success is our business.

Materials Innovation

TSM spends extensively in R&D, constantly optimising alloy compositions and production procedures for improved performance.

Shipping & Packaging

We safeguard your investment with excellent packaging:

Individual Tube Protection:Each tube is closed with plastic end guards

Bundle Configuration: The tubes are bundled together with steel bands and covered with waterproof film.

Wooden Crates: Providing crush resistance in transportation for export shipments

Labelling: Clearly marked with heat number, specification and client PO information

We ship by water, air, or fast courier service based on your urgency and location.

FAQ 

Q: What is the difference between Incoloy 800, 800H and 800HT?

A: Incoloy 800 has wide corrosion resistance. 800H contains regulated carbon (0.05- 0.10%) for improved creep strength. 800HT has Al+Ti (0.85-1.20%) for optimal high temperature performance.

Q: Is product compatible with sulfuric acid environments?

A. It has good resistance to various organic and inorganic acids notably in oxidising conditions. Usually, Alloy 825 is used for pure reducing sulfuric acid.

Q: What filler metal do I use for welding?

A: Use Inconel Filler Metal 82 (ERNiCr-3) or Welding Electrode 182 (ENiCrFe-3) to maintain corrosion resistance at joints.

Q: Is post-weld heat treatment (PWHT) required?

A: Generally no. However, for certain corrosive environments, a solution anneal may be advised to recover maximal corrosion resistance.

Q: How do seamless tubes compare with welded tubes in high pressure service?

A: The weld seam, the weakest area in welded tubes, is eliminated by seamless fabrication. It offers greater dependability in high pressure, high temperature situations where failure is not an option.

Q: What is your MOQ?

A: Our MOQ is 50 kg and we have various popular size in stock for prompt delivery.

Q: Do you provide bespoke sizes?

A: Yes. We provide custom sizes, lengths and finishes made to your precise requirements.

Contact Us

Ready to source premium Incoloy 800 Seamless Tube for your critical applications? Reach out to TSM Technology today at info@tsmnialloy.com for technical consultation and quotations.