You should choose inconel pipe over stainless steel when high-temperature and mechanical stress stability, and high corrosion resistance for aggressive chemicals are essential. This is because stainless steel pipes may fail in such conditions.
Inconel Pipe Manufacturer
We at Xintongda Special Steel (XTD) are a leading supplier and manufacturer of inconel seamless pipes in Songyang, China. Inconel pipe is a type of nickel-based superalloy pipe with added chromium (depending on the grade). It provides high strength and good corrosion and oxidation resistance at elevated temperatures. At XTD, we specialise in offering seamless Inconel pipes that have uniform strength and higher pressure resistance than welded ones. We manufacture our inconel pipes in compliance with ASTM B167 and B444 standards. The inconel pipe remains stable at elevated temperatures and offers good mechanical properties. It is suitable for many industrial applications, like aerospace, oil & gas, and power generation.
As a trusted manufacturer of Inconel seamless pipes since 1985, we can deliver in-stock products within a week and production orders in 15-60 days. We have an annual supply capacity of 25,000 tons, and hold multiple international certifications.
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OD Range
6-457 mm
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Thickness
1-65 mm
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Length
≤ 18 m
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What is Inconel Pipe?
An Inconel pipe is a nickel-based superalloy conduit primarily alloyed with chromium and, depending on grade, elements such as iron, molybdenum, niobium, aluminium, and titanium. The high amount of nickel, combined with solid solution strengthening, increases its tensile strength at elevated temperatures. It can also resist aggressive chemicals, oxidation, saltwater, pitting, crevice corrosion, and stress corrosion cracking. Here at XTD, we provide many grades of inconel seamless pipes, like inconel 600, 601, 718, 625, etc.
What are the Key Features of Inconel Piping?
Inconel pipe has 5 main features: corrosion resistance, high-temperature strength, oxidation resistance, fabricability, and high mechanical strength.
- Corrosion Resistance: The molybdenum content in grades like alloy 625 improves resistance to pitting and crevice corrosion in chloride environments. The nickel and chromium resists corrosion in oxidising, reducing, and saline environments.
- High-Temperature Strength: Inconel alloys achieve high-temperature strength through solid solution strengthening and, in precipitation-hardened grades such as 718, through age-hardening mechanisms.
- Oxidation Resistance: When inconel is exposed to oxygen at high temperatures, the chromium in it forms a passive chromium oxide layer (Cr₂O₃). This makes the pipe very resistant to oxidation.
- Fabricability: The austenitic structure provides good ductility and toughness, allowing forming and welding using qualified procedures.
- High Mechanical Strength: High nickel content combined with solid solution strengthening and, in certain grades, precipitation hardening provides excellent yield and tensile strength.
Inconel Pipe Specification
We provide our inconel seamless pipes in a wide range of dimensions, and our pipes fully comply with international ASTM standards.
Standard
ASTM B167, ASTM B444
Outside Diameters
6 - 457 mm
Length
≤ 18 m
Thickness Range
1 - 65 mm
Grades
Inconel 600, 601, 625, 718
Form
Round, Square, Rectangular, Hydraulic etc
End
Plain End, Beveled End, Threaded
Testing
PMI, Radiography, Mechanical, Chemical
Inconel Pipe Types and Available Forms
Inconel pipes are offered in various types and shapes, including seamless, round, square, and hollow. However, we specialise in manufacturing and supplying inconel seamless pipes.
Inconel Seamless Pipe
Inconel Square Pipe
Inconel Round Pipe
Inconel Hollow Pipe
Range of Inconel Grades for Pipes
We offer various grades of inconel seamless pipes, like 600, 601, 625, and 718. What makes the grades different from each other is their chemical composition, characteristics, standards, and applications.
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Inconel 600
Inconel 600 pipe, commonly known as Alloy 600, Nickel 600, Nickelvac 600, and Ferrochronin 600, is a nickel-chromium-based high-performance alloy that can withstand elevated temperatures and harsh chemical environments. Its standard equivalent designation is UNS N06600, and is also known by its Werkstoff number as DIN 2.4816.
02
Inconel 601
Generally known as Alloy 601, Nicrofer 601, Pyromet 601, the inconel 601 pipe is a tubular product made of nickel-chromium alloy. It provides exceptional strength, good resistance to oxidation, carburisation, and corrosion, and stability at elevated temperatures. Alloy 601 is globally recognised as UNS N06601 (standard designation), and by its Werkstoff number as 2.4851.
03
Inconel 625
Inconel 625 pipe is also called Alloy 625, Nicrofer 6020, Nickelvac 625, or Chronin 625. It is a nickel-chromium-molybdenum alloy pipe known for its stability at cryogenic to moderately high temperatures and resistance to pitting, corrosion, and oxidation. The Nicrofer 6020 pipe’s standard equivalent designation is UNS N06625, and is also recognised by its Werkstoff number as DIN 2.4856.
04
Inconel 718
The inconel 718 pipe, also known as Alloy 718, is a high-performance pipe made from a nickel-chromium alloy. Its ability to provide exceptional strength, high durability, and good resistance to heat and corrosion makes it suitable for many demanding applications. Alloy 718 pipe is globally recognised by its standard designation as UNS N07718. It is also known by its Werkstoff number as 2.4668.
Industrial Applications of Inconel Alloy Pipe
The inconel seamless pipe finds its application in industries that face harsh chemicals, oxidation, elevated temperatures, and localised corrosion.
Aerospace
In the aerospace industry, it is used in exhaust system piping, jet and gas turbine engine fuel lines, rocket engine propellant feed lines, and hydraulic and pneumatic high-pressure tubing.
Oil and Gas
Inconel pipe is generally used in downhole production tubing in sour gas wells, offshore platform process piping, and refinery process piping.
Chemical Processing
Used in chlorination and caustic circulation lines, heat exchanger tubing, corrosive acid handling lines, and reactor feed and discharge piping.
Power Generation
It is found in Flue Gas Desulfurisation (FGD) systems, boiler feedwater lines, superheater and reheater steam lines, and Heat Recovery Steam Generator (HRSG) piping.
Marine & Offshore Engineering
Inconel alloy seamless pipe is used in desalination plants, marine propulsion system coolant and exhaust lines, subsea fluid transport pipelines, and seawater cooling system piping.
100% Certified Testing & Documentation
- EN 10204 3.1 and EN 10204 3.2 Material Test Certificates (MTC)
- Raw Materials Certificate
- 100% Positive Material Identification (PMI)
- Heat Treatment Charts
- Third-Party Inspection Report
- Surface roughness and size measurement
- Manufacturer Test Certificate (Impact Testing, Flattening, Flare, Bend, Hardness, Intergranular Corrosion, Pitting Corrosion, Grain size, Eddy Current (ET), Ultrasonic Testing (UT), Hydrostatic Testing (HT), etc.)
- Laboratory Test Certificate from Govt. Approved Lab
If you want to know more product details, please contact us!
Frequently Asked Questions
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When should I choose Inconel pipe instead of stainless steel?
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Can I use Inconel pipe for a car exhaust?Yes, you can use the inconel pipe for your car exhaust, and even in racing cars, because of its exceptional high-temperature stability and resistance to corrosion and stress.
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Does Inconel pipe rust?No, the inconel pipe doesn’t rust easily, as it is a nickel-chromium-based superalloy with good resistance to corrosion, oxidation, and localised corrosion.