Name: Inconel 725 Seamless Pipes
Brand: Solitaire Overseas

What Are Inconel 725 Seamless Pipes?

Inconel 725 (UNS N07725) is a high strength, precipitation-hardenable nickel-based superalloy that is being extensively utilized in offshore oil and gas, petrochemical, aerospace, as well as nuclear applications. Inconel 725 Seamless Pipes are used in sour and high-pressure service as well as in high-pressure and sulfide stress cracking environments because of its very good resistance to corrosion, stress corrosion cracking and sulfide stress cracking. As a precipitation-strengthened alloy, its mechanical properties are enhanced through solution annealing and double aging treatment. This is a heat treatment method in which the yield strength, hardness and fatigue resistance are greatly enhanced at a relatively low cost while simultaneously preserving high ductility.

At Solitaire Overseas, we are a trusted supplier and exporter of Inconel 725 Seamless Pipes in India, where we manufacture pipes under ASTM B829 standards and out of the best raw materials with the help of extrusion and cold drawing operations. Our UNS N07725 smooth pipes have high dimensional performance and good surface finish and are also reliable in operation within critical industrial systems.

Manufacturing Process of Alloy 725 Seamless Pipe

At Solitaire Overseas, Inconel 725 Seamless Pipes are manufactured using a precision-controlled process to ensure structural integrity and long-term corrosion resistance.

Hot Extrusion: Alloy 725 billets are heated and extruded through a die to form a hollow shell. This eliminates longitudinal weld seams and ensures uniform strength across the pipe body.

Cold Drawing: The extruded shell is cold drawn through hardened dies to achieve tight dimensional tolerances, refined grain structure, and enhanced surface finish.

Heat Treatment (Age Hardening): UNS N07725 undergoes solution annealing followed by double aging. This precipitation hardening process forms strengthening phases within the matrix, significantly improving yield strength and hardness without compromising corrosion resistance.

Contact us to buy Inconel Products

Check price of Inconel 725 Pipes & Inconel 725 Welded Pipes in India

Weight Calculator

Inconel 725 Seamless Pipe Specifications

Specification Type	Details
Material Grade	Inconel 725
UNS Number	UNS N07725
Werkstoff No.	2.4856
Pipe Type	Seamless
Standard	ASTM B829
Manufacturing Method	Hot Extruded / Cold Drawn
Condition	Solution Annealed / Age Hardened
Size Range	1/8" NB to 24" NB
Wall Thickness	SCH 5 to SCH XXS
Length	Single Random, Double Random, Cut Length
End Finish	Plain End, Beveled End, Threaded
Surface Finish	Annealed & Pickled / Polished
Certification	EN 10204 3.1 / 3.2
NACE Compliance	Available for Sour Service

Mechanical Properties of Inconel 725 Seamless Pipe (Age Hardened Condition)

In precipitation-hardened conditions, Alloy 725 Seamless Pipe achieves high strength suitable for deepwater applications.

Property	Minimum Value
Tensile Strength	965 MPa
Yield Strength (0.2%)	620 MPa
Elongation	30%
Hardness	Up to 35 HRC

Physical Properties of Alloy 725 Seamless Pipe

Property	Value
Density	8.19 g/cm³
Melting Range	1290–1350 °C
Modulus of Elasticity	~207 GPa
Thermal Conductivity	~11.3 W/m·K
Coefficient of Thermal Expansion (20–100°C)	13.0 x 10²³/°C

Corrosion Resistance of Alloy 725 Seamless Pipe

Alloy 725 Seamless Pipe offers superior resistance to:

Sulfide Stress Cracking (SSC)
Hydrogen-Induced Cracking (HIC)
Chloride Stress Corrosion Cracking
Pitting and crevice corrosion in marine environments
Sour gas and high-pressure CO₂ environments

Its high nickel and molybdenum content make Inconel 725 Seamless Pipes highly reliable in offshore and subsea installations where corrosion failure cannot be tolerated.

Size Range of Inconel 725 Seamless Pipes

Parameter	Range
Outside Diameter	1/8" NB to 24" NB
Wall Thickness	SCH 5 – SCH XXS
Length	Up to 6 meters standard
Standard	ASTM B829

Custom heavy-wall Inconel 725 Seamless Pipes are available for subsea and high-pressure injection systems.

Testing & Inspection of UNS N07725 Seamless Pipe

Each Inconel 725 Seamless Pipe undergoes:

Hydrostatic Testing
Ultrasonic Testing
Eddy Current Testing
Positive Material Identification (PMI)
Mechanical Testing
Intergranular Corrosion Testing

Mill Test Certificates are supplied as per EN 10204 3.1 / 3.2. NACE-compliant material can be provided for sour service applications.

Seamless vs Welded Inconel 725 Pipes

Feature	Seamless	Welded
Weld Joint	No	Yes
Pressure Capacity	Higher	Moderate
Failure Risk	Lower	Higher at seam
Cost	Higher	Lower
Large Diameter Availability	Limited	Easier

For high-pressure and critical applications, Inconel 725 Seamless Pipes are preferred. For larger diameters and cost-sensitive projects, Inconel 725 Welded Pipes may be considered.

Applications of Inconel 725 Seamless Pipes

Inconel 725 Seamless Pipes are widely used in:

Offshore oil & gas platforms
Deepwater subsea systems
Downhole tubing
Sour gas wells
Marine pressure systems
High-pressure chemical injection lines

UNS N07725 seamless pipes are selected in applications where weld seam failure is unacceptable and long-term corrosion resistance is essential.

Get a Quote for Inconel 725 Seamless Pipes

Looking for pricing on Inconel 725 Seamless Pipes? Send us your quantity, grade, and delivery location—we'll get back with a quote and lead time within 24 hours. Stock available for quick dispatch.