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
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.
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.
Types of Pipes & Tubes
Explore our range of industrial pipes and tubes, manufactured for different applications, materials, specifications and engineering requirements.
Pipes and Tubes
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Seamless Pipes
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ERW Pipes
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LSAW Pipes
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SSAW Pipes
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Welded Pipes
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Box Pipes
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Box Tubes
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Brass Pipes
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Heat Exchanger Tubes
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Boiler Tubes
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Aluminium Pipes
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Carbon Steel Seamless Pipes
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Carbon Steel Pipe
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Stainless Steel Pipe
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Alloy Steel Pipe
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Duplex Steel Pipe
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Super Duplex Steel Pipe
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Nickel Alloy Pipe
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Copper Nickel Alloy Pipe
→Get Certified Nickel Alloy Inconel 625 Pipes and Tubes at Competitive Factory Prices
Nickel Alloy Inconel 625 Pipes and Tubes Specifications
| Property | Specification |
|---|---|
| Alloy | Inconel 625 (Alloy 625) |
| UNS Number | N06625 |
| EN / Werkstoff | NiCr22Mo9Nb / 2.4856 |
| Seamless Pipe and Tube | ASTM B444 / ASME SB444 |
| Welded Pipe | ASTM B705 / ASME SB705 |
| Welded Tube | ASTM B704 / ASME SB704 |
| General Requirements | ASTM B829 (seamless), B775 (welded pipe), B751 (welded tube) |
| Grades | Grade 1 (annealed), Grade 2 (solution annealed) |
| Pipe Size | ½" to 24" NB; custom sizes on request |
| Tube Size | By OD and wall as ordered |
| Wall | Sch 5S to XXS for pipe, or to drawing |
| Length | Single random, double random, cut length |
| Ends | Plain, beveled, threaded |
| Finish | Annealed and pickled, or bright annealed |
| Testing | PMI, hydrostatic or eddy current, flattening, flaring |
| Certificate | EN 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 2 | 827 / 690 MPa min |
| Yield Strength, Grade 1 / Grade 2 | 414 / 276 MPa min |
| Elongation | 30% min |
| Density | approx. 8.44 g/cm³ |
| Melting Range | approx. 1290 – 1350 °C |
| Thermal Expansion (20–100 °C) | approx. 12.8 µm/m·°C |
| Thermal Conductivity (20 °C) | approx. 10 W/m·K |
| Elastic Modulus | approx. 205 GPa |
| Magnetic Response | Non-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 SB444 | Seamless nickel alloy pipes and tubes | Seamless Inconel 625 products |
| ASTM B705 / ASME SB705 | Welded nickel alloy pipes | Welded Inconel 625 pipes |
| ASTM B704 / ASME SB704 | Welded nickel alloy tubes | Welded Inconel 625 tubes |
| ASTM B829 | General requirements for seamless nickel alloy pipes and tubes | Dimensions, tolerances, and testing requirements |
| ASTM B775 | General requirements for welded nickel alloy pipes | Welded pipe inspection and acceptance |
| ASTM B751 | General requirements for welded nickel alloy tubes | Welded tube inspection and acceptance |
| ASME B36.19M | Stainless steel pipe dimensions | Applicable dimensional requirements where specified by the project |
| ASTM B564 | Nickel alloy forgings | Flanges and forged components |
| ASTM B366 | Factory-made wrought nickel alloy fittings | Pipe fittings |
| ASTM B443 | Nickel-chromium-molybdenum-columbium alloy plate, sheet, and strip | Plate and sheet products |
| ASTM B446 | Nickel-chromium-molybdenum-columbium alloy bars | Bar products |
| NACE MR0175 / ISO 15156 | Materials for use in H₂S-containing oil and gas environments | Sour-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 Treatment | Annealed (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 Use | Higher strength at lower temperature | Service 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 |
|---|---|---|---|
| Nickel | 58% min | 38 – 46% | Balance (about 57%) |
| Chromium | 20 – 23% | 19.5 – 23.5% | 14.5 – 16.5% |
| Molybdenum | 8 – 10% | 2.5 – 3.5% | 15 – 17% |
| Approx. PREN | About 51 | About 31 | About 69 |
| Typical Min Yield | 414 MPa (Grade 1) | 241 MPa | 283 MPa |
| Best At | Seawater, chlorides, high strength | Sulfuric and phosphoric acid, value | Strongly 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.
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" | 21.3 | 2.11 / 1.07 | 2.77 / 1.36 | 3.73 / 1.74 |
| 1¼" | 42.2 | 2.77 / 2.89 | 3.56 / 3.65 | 4.85 / 4.80 |
| 3" | 88.9 | 3.05 / 6.94 | 5.49 / 12.13 | 7.62 / 16.41 |
| 4" | 114.3 | 3.05 / 8.99 | 6.02 / 17.27 | 8.56 / 23.99 |
| 8" | 219.1 | 3.76 / 21.46 | 8.18 / 45.72 | 12.70 / 69.46 |
| 12" | 323.9 | 4.57 / 38.67 | 10.31 / 85.67 | 12.70 / 104.73 |
Tubes
| OD (mm) | Wall (mm) | Weight (kg/m) |
|---|---|---|
| 12.70 | 1.24 | 0.38 |
| 15.88 | 1.65 | 0.62 |
| 19.05 | 1.65 | 0.76 |
| 25.40 | 2.11 | 1.30 |
| 31.75 | 2.77 | 2.13 |
| 38.10 | 2.77 | 2.59 |
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 Names | Inconel 625, Alloy 625, Nickel 625 | Pipes and tubes |
| UNS | N06625 | Material grade |
| EN Designation | NiCr22Mo9Nb | European alloy designation |
| Werkstoff Number | 2.4856 | Material identification |
| JIS Designation | NCF 625 | Japanese designation |
| ASTM B444 | UNS N06625 | Seamless pipes and tubes |
| ASTM B705 | UNS N06625 | Welded pipes |
| ASTM B704 | UNS N06625 | Welded tubes |
| ASTM B443 | UNS N06625 | Plates, sheets, and strips |
| ASTM B446 | UNS N06625 | Bars and rods |
| ASTM B564 | UNS N06625 | Forgings 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.
