Nickel Alloy Inconel 625 Pipes and Tubes Manufacturer in India

Nickel Alloy Inconel 625 Pipes and Tubes Manufacturer in India

Sachiya Steel International is a trusted Nickel Alloy Inconel 625 Pipes and Tubes Manufacturer in India, established in 2005 and headquartered in Mumbai. With over 20 years of experience, we manufacture, supply, and export industrial pipes and tubes to customers in 85+ countries. Our products serve oil and gas, chemical processing, petrochemical, marine, power generation, and engineering industries, where corrosion resistance and reliable performance matter.

Inconel 625 is a nickel-chromium-molybdenum-niobium alloy known for its resistance to seawater, chlorides, acids, and high temperatures. We supply pipes and tubes to applicable ASTM standards, including ASTM B444, B705, and B704, with material testing and EN 10204 3.1 inspection certificates available as required. Our ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, and applicable TÜV certifications reflect our commitment to quality, material traceability, technical compliance, and dependable delivery for standard, bulk, and project requirements worldwide.

What Are Nickel Alloy Inconel 625 Pipes and Tubes?

Nickel Alloy Inconel 625 Pipes and Tubes are industrial products manufactured from UNS N06625, also known as Alloy 625, NiCr22Mo9Nb, and W.Nr. 2.4856. This nickel-chromium-molybdenum-niobium alloy offers excellent corrosion resistance, high mechanical strength, and reliable performance in seawater, chloride-rich environments, acidic media, and high-temperature applications.

Available as seamless and welded pipes and tubes, Inconel 625 products are used in offshore oil and gas, marine engineering, chemical processing, petrochemical plants, and heat exchangers. Manufactured to applicable specifications such as ASTM B444, ASTM B705, and ASTM B704, they meet different industrial piping and tubing requirements depending on product type. Sizes, wall thicknesses, testing, and EN 10204 3.1 material certificates can be specified according to project requirements.

Nickel Alloy Inconel 625 Pipes and Tubes
Nickel Alloy Inconel 625 Pipes and Tubes
Nickel Alloy Inconel 625 Pipes and Tubes
Nickel Alloy Inconel 625 Pipes and Tubes
Nickel Alloy Inconel 625 Pipes and Tubes
Nickel Alloy Inconel 625 Pipes and Tubes
Manufacturer & Exporter

Nickel Alloy Inconel 625 Pipes and Tubes

✓ Industrial Grade
✓ Quality Assured
✓ Global Supply

High-quality Inconel 625 pipes and tubes designed for demanding applications across oil and gas, chemical processing, petrochemical, marine, power generation and engineering industries. Available in various sizes, wall thicknesses and specifications.

Product Highlights
Seamless & Welded Options
Multiple Material Grades
Wide Size Range
Custom Specifications
Industrial Standards
Worldwide Export
Speak with our sales team for pricing & specifications.

Types of Nickel Alloy Inconel 625 Pipes and Tubes

A Nickel Alloy Inconel 625 Pipes and Tubes Manufacturer offers different product forms to meet industrial requirements for corrosion resistance, mechanical strength, pressure handling, and heat transfer. Available options include seamless and welded pipes and tubes in various sizes, wall thicknesses, and specifications for demanding operating environments.

  • Inconel 625 Seamless Pipes (ASTM B444): Manufactured without a welded seam for demanding fluid handling and industrial piping applications.
  • Inconel 625 Welded Pipes (ASTM B705): Produced using welding processes for industrial piping systems requiring different diameters and wall thicknesses.
  • Inconel 625 Seamless Tubes (ASTM B444): Used in heat exchangers, instrumentation, and precision equipment.
  • Inconel 625 Welded Tubes (ASTM B704): Suitable for process equipment and heat transfer applications.
  • Grade 1 and Grade 2 Products: Supplied in specified annealed conditions according to applicable standards and service requirements.
  • Inconel 625 U-Bend Tubes: Formed for heat exchanger bundles and compact thermal systems.
  • Small-Bore Inconel 625 Tubes: Used in instrumentation and specialized fluid handling systems.
  • Heavy-Wall Inconel 625 Pipes: Suitable for applications requiring increased wall thickness and strength, subject to design specifications.

Why Choose Nickel Alloy Inconel 625 Pipes and Tubes?

Nickel Alloy Inconel 625 Pipes and Tubes offer a combination of corrosion resistance, mechanical strength, and temperature stability for demanding industrial applications. Their nickel-chromium-molybdenum-niobium composition helps withstand aggressive environments where conventional stainless steel may not provide sufficient performance.

  • Excellent Corrosion Resistance: Resists seawater, chlorides, pitting, crevice corrosion, and many acidic environments.
  • High Mechanical Strength: Provides strength through solid-solution strengthening without requiring precipitation hardening.
  • Temperature Resistance: Maintains useful mechanical properties across a wide temperature range.
  • Oxidation Resistance: Performs reliably in many high-temperature oxidizing environments.
  • Good Weldability: Supports fabrication using appropriate welding procedures and compatible filler materials.
  • Versatile Applications: Suitable for oil and gas, offshore platforms, marine engineering, chemical processing, petrochemical plants, and heat exchangers.
  • Reliable Material Traceability: Material test certificates and inspection documentation can help verify grade, chemical composition, and compliance with specified requirements.
  • Seamless and Welded Options: Available in different product forms, dimensions, and wall thicknesses to suit project specifications.

These properties make Inconel 625 Pipes and Tubes a practical choice for applications that demand dependable performance under corrosive and mechanically challenging conditions.

Get Certified Nickel Alloy Inconel 625 Pipes and Tubes at Competitive Factory Prices

Nickel Alloy Inconel 625 Pipes and Tubes Specifications

Property Specification
AlloyInconel 625 (Alloy 625)
UNS NumberN06625
EN / WerkstoffNiCr22Mo9Nb / 2.4856
Seamless Pipe and TubeASTM B444 / ASME SB444
Welded PipeASTM B705 / ASME SB705
Welded TubeASTM B704 / ASME SB704
General RequirementsASTM B829 (seamless), B775 (welded pipe), B751 (welded tube)
GradesGrade 1 (annealed), Grade 2 (solution annealed)
Pipe Size½" to 24" NB; custom sizes on request
Tube SizeBy OD and wall as ordered
WallSch 5S to XXS for pipe, or to drawing
LengthSingle random, double random, cut length
EndsPlain, beveled, threaded
FinishAnnealed and pickled, or bright annealed
TestingPMI, hydrostatic or eddy current, flattening, flaring
CertificateEN 10204 3.1; 3.2 on request

Nickel Alloy Inconel 625 Pipes and Tubes Chemical Composition

Element Content (%)
Nickel (Ni)58.00 min
Chromium (Cr)20.00 – 23.00
Molybdenum (Mo)8.00 – 10.00
Niobium + Tantalum (Nb + Ta)3.15 – 4.15
Iron (Fe)5.00 max
Carbon (C)0.10 max
Manganese (Mn)0.50 max
Silicon (Si)0.50 max
Phosphorus (P)0.015 max
Sulfur (S)0.015 max
Aluminium (Al)0.40 max
Titanium (Ti)0.40 max
Cobalt (Co)1.00 max

Limits per ASTM B444 for UNS N06625.

Nickel Alloy Inconel 625 Pipes and Tubes Mechanical and Physical Properties

Property Value
Tensile Strength, Grade 1 / Grade 2827 / 690 MPa min
Yield Strength, Grade 1 / Grade 2414 / 276 MPa min
Elongation30% min
Densityapprox. 8.44 g/cm³
Melting Rangeapprox. 1290 – 1350 °C
Thermal Expansion (20–100 °C)approx. 12.8 µm/m·°C
Thermal Conductivity (20 °C)approx. 10 W/m·K
Elastic Modulusapprox. 205 GPa
Magnetic ResponseNon-magnetic

Thermal conductivity is low, so 625 tube moves heat slowly compared with stainless steel. Allow for this in exchanger design.

Nickel Alloy Inconel 625 Pipes and Tubes Standards

Nickel Alloy Inconel 625 Pipes and Tubes must meet the applicable ASTM, ASME, and project specifications for dimensions, manufacturing, testing, and material quality. The following table outlines the key standards used for Inconel 625 pipes, tubes, and related products.

Standard Description Application
ASTM B444 / ASME SB444Seamless nickel alloy pipes and tubesSeamless Inconel 625 products
ASTM B705 / ASME SB705Welded nickel alloy pipesWelded Inconel 625 pipes
ASTM B704 / ASME SB704Welded nickel alloy tubesWelded Inconel 625 tubes
ASTM B829General requirements for seamless nickel alloy pipes and tubesDimensions, tolerances, and testing requirements
ASTM B775General requirements for welded nickel alloy pipesWelded pipe inspection and acceptance
ASTM B751General requirements for welded nickel alloy tubesWelded tube inspection and acceptance
ASME B36.19MStainless steel pipe dimensionsApplicable dimensional requirements where specified by the project
ASTM B564Nickel alloy forgingsFlanges and forged components
ASTM B366Factory-made wrought nickel alloy fittingsPipe fittings
ASTM B443Nickel-chromium-molybdenum-columbium alloy plate, sheet, and stripPlate and sheet products
ASTM B446Nickel-chromium-molybdenum-columbium alloy barsBar products
NACE MR0175 / ISO 15156Materials for use in H₂S-containing oil and gas environmentsSour-service applications, subject to applicable requirements

Manufacturers and suppliers should confirm the required product form, grade, dimensions, testing, and documentation before accepting an order. Hydrostatic or eddy-current testing, positive material identification (PMI), EN 10204 3.1 material test certificates, and third-party inspection can be specified where applicable. Sour-service compliance must also be verified against the project's exact conditions and material requirements.

Grade 1 vs Grade 2: Which Condition of Nickel Alloy Inconel 625 Pipes and Tubes Do You Need?

ASTM B444 offers 625 in two conditions, and the difference matters.

Point Grade 1 Grade 2
Heat TreatmentAnnealed (871 °C min)Solution annealed (1093 °C min)
Tensile Strength (min)827 MPa (120 ksi)690 MPa (100 ksi)
Yield Strength (min)414 MPa (60 ksi)276 MPa (40 ksi)
Elongation (min)30%30%
Typical UseHigher strength at lower temperatureService in the creep range above about 600 °C

Grade 1 gives higher strength and suits most corrosion and pressure work. Grade 2 has a coarser grain and is the right choice when the pipe will run at high temperature and creep matters. Name the grade on your purchase order. If you leave it out, the supplier has to guess.

Nickel Alloy Inconel 625 vs Incoloy 825 vs Hastelloy C-276

Engineers often choose between these three corrosion-resistant nickel alloys.

Point Inconel 625 Incoloy 825 Hastelloy C-276
Nickel58% min38 – 46%Balance (about 57%)
Chromium20 – 23%19.5 – 23.5%14.5 – 16.5%
Molybdenum8 – 10%2.5 – 3.5%15 – 17%
Approx. PRENAbout 51About 31About 69
Typical Min Yield414 MPa (Grade 1)241 MPa283 MPa
Best AtSeawater, chlorides, high strengthSulfuric and phosphoric acid, valueStrongly reducing acids, hot chlorides

625 is the strongest of the three and the standard pick for seawater and offshore work. C-276 beats it in hot, strongly reducing acids. 825 is the lower-cost choice for sulfuric and phosphoric acid duty.

Corrosion Resistance and Temperature Limits of Nickel Alloy Inconel 625 Pipes and Tubes

In seawater, 625 resists pitting and crevice attack at ambient temperature, and it handles chloride stress corrosion cracking and hot brine better than stainless steels or duplex. It also holds its strength and toughness at cryogenic temperatures. In clean, oxidizing air, it resists scaling up to roughly 980 °C.

Temperature has a trap. Long exposure between about 600 and 900 °C can cause precipitates to form, which reduces ductility and toughness. For that reason, most strength-based designs keep continuous service near 650 °C or lower, and Grade 2 is chosen for creep-range service. Fatigue strength is good, which suits cyclic pressure duty. 625 is not the best pick for hot, strongly reducing acids such as concentrated hydrochloric acid, where C-276 does better. Sulfur-bearing atmospheres at high temperature should also be avoided.

Nickel Alloy Inconel 625 Pipes and Tubes Manufacturers and Suppliers in India

When selecting Nickel Alloy Inconel 625 Pipes and Tubes Manufacturers and Suppliers in India, checking the correct ASTM standards helps ensure the products meet project requirements. ASTM B444 covers seamless Inconel 625 pipes and tubes, ASTM B705 covers welded pipes, ASTM B704 covers welded tubes, and ASTM B829 specifies general requirements for nickel and nickel-alloy seamless pipes and tubes.

We focus on product quality, heat treatment records, inspection, and material traceability. We also supply Inconel 625 tubes, flanges, fittings, and plates to support industrial projects with compatible materials and specifications. Whether the requirement involves standard dimensions or project-specific orders, we provide products according to applicable standards, with material test certificates and inspection documentation available as required.

Nickel Alloy Inconel 625 Pipes and Tubes Size and Weight Chart

Weight per metre = (OD − wall) × wall × 0.0265, with OD and wall in mm. This uses a density of 8.44 g/cm³. Treat the numbers as estimates, since wall tolerance moves the real weight.

Weight (kg/m) = (OD − Wall) × Wall × 0.0265

OD and wall are in mm. Multiply the result by the pipe or tube length to obtain the total weight.

Pipes (wall in mm / weight in kg/m)

NPS OD (mm) Sch 10S Sch 40S Sch 80S
½"21.32.11 / 1.072.77 / 1.363.73 / 1.74
1¼"42.22.77 / 2.893.56 / 3.654.85 / 4.80
3"88.93.05 / 6.945.49 / 12.137.62 / 16.41
4"114.33.05 / 8.996.02 / 17.278.56 / 23.99
8"219.13.76 / 21.468.18 / 45.7212.70 / 69.46
12"323.94.57 / 38.6710.31 / 85.6712.70 / 104.73

Tubes

OD (mm) Wall (mm) Weight (kg/m)
12.701.240.38
15.881.650.62
19.051.650.76
25.402.111.30
31.752.772.13
38.102.772.59

For any other size, we can send a full weight chart on request.

Nickel Alloy Inconel 625 Pipes and Tubes Common Materials

As a Nickel Alloy Inconel 625 Pipes and Tubes Manufacturer and Supplier in India, we manufacture, supply, and export products made from UNS N06625, also known as Inconel 625, Alloy 625, and Nickel 625. These nickel-chromium-molybdenum-niobium products meet industrial requirements for corrosion resistance, mechanical strength, and reliable performance in demanding environments.

Material Reference Grade or Standard Product Form
Common NamesInconel 625, Alloy 625, Nickel 625Pipes and tubes
UNSN06625Material grade
EN DesignationNiCr22Mo9NbEuropean alloy designation
Werkstoff Number2.4856Material identification
JIS DesignationNCF 625Japanese designation
ASTM B444UNS N06625Seamless pipes and tubes
ASTM B705UNS N06625Welded pipes
ASTM B704UNS N06625Welded tubes
ASTM B443UNS N06625Plates, sheets, and strips
ASTM B446UNS N06625Bars and rods
ASTM B564UNS N06625Forgings and applicable flange components

We supply Nickel Alloy Inconel 625 Pipes and Tubes in different sizes, wall thicknesses, and product forms according to project specifications. Material test certificates, inspection reports, and supporting documentation are available as required to ensure material traceability and quality compliance.

Nickel Alloy Inconel 625 Pipes and Tubes Applications

  • Subsea and Offshore Oil and Gas: Risers, flowlines, manifolds and topside piping.
  • Sour Gas Production: Wellhead and process lines that meet NACE sour-service requirements.
  • Chemical Processing: Lines handling chlorides, acids and mixed corrosive streams.
  • Seawater Systems: Cooling, firewater, injection and desalination piping.
  • Aerospace: Ducting, exhaust and fuel system parts.
  • Power Generation and Scrubbers: Flue gas desulfurization piping and boiler parts.
  • Nuclear Power: Reactor components and instrumentation lines.
  • Heat Exchangers: Tube bundles in corrosive, high-pressure duty.

Why Choose Us as Your Nickel Alloy Inconel 625 Pipes and Tubes Manufacturer in India?

Choose us for over 20 years of industry experience, flexible supply capabilities, and a product range designed to meet demanding industrial requirements. Established in 2005, we understand the material properties, manufacturing requirements, and applicable standards for Nickel Alloy Inconel 625 Pipes and Tubes used in corrosive and high-temperature environments.

As an experienced Nickel Alloy Inconel 625 Pipes and Tubes Supplier in India, we offer seamless and welded products in various sizes, diameters, wall thicknesses, and lengths, according to project specifications. Our supply capacity of up to 100 metric tons per month supports bulk orders and project-based requirements, while our export network serves customers in more than 85 countries. We follow applicable ASTM and ASME specifications, with material testing, inspection, and certification available as required. Our ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, and applicable TÜV certifications reflect our commitment to quality, traceability, and responsible operations. We also supply other nickel alloys, stainless steel, duplex, super duplex, carbon steel, and alloy steel products to support diverse industrial needs.

Countries We Export Nickel Alloy Inconel 625 Pipes and Tubes To

As a Nickel Alloy Inconel 625 Pipes and Tubes Manufacturer and Supplier in India, we serve offshore operators, chemical plants, marine contractors and EPC firms in 85+ countries. Key export regions include:

North America: USA, Canada, Mexico

Europe: Norway, United Kingdom, Germany, France, Italy, Netherlands, Spain

Middle East: UAE, Saudi Arabia, Qatar, Oman, Kuwait, Bahrain

Asia-Pacific: Singapore, Malaysia, Indonesia, Australia, Japan, South Korea, Vietnam

Africa: South Africa, Nigeria, Egypt, Angola, Ghana

South America: Brazil, Argentina, Chile, Guyana

Every shipment carries EN 10204 3.1 mill test certificates, and 3.2 certification or third-party inspection can be arranged on request. Pipes and tubes leave with capped ends, protective wrapping and bundled or crated packing for sea freight. We prepare the commercial invoice, packing list and test certificates to suit your port and customs rules.

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