Inconel 625 Pipes Manufacturer
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Midland Alloys Inc. is a trusted Manufacturer and Supplier of Inconel 625 Pipes, offering a complete range of precision-engineered products that meet international standards. Known for high strength, corrosion resistance, and thermal stability, Inconel 625 pipes are ideal for extreme environments. These pipes are available with buttweld fittings, threaded ends, and custom bends, and they can be seamless, welded, ERW, or fabricated. The nickel-chromium-molybdenum-niobium alloy Inconel 625 exhibits exceptional resistance to oxidation, pitting, and crevice corrosion. Over an extensive temperature range, it provides excellent mechanical properties. We provide pipes that meet ASTM B444, ASME SB444, and DIN/EN standards, with dimensions and wall thicknesses available upon request. Our stock ranges from a comprehensive number of sizes available in storage, supported by ISO-certified quality systems as well as an extensive global network of exports.
Advantages of Inconel 625 Pipes
- Corrosion Resistance:
Inconel 625 piping has superior resistance to a broad variety of corrosive environments. They perform reliably in seawater, acidic solutionsand chloride-rich conditions, making it ideal for marine and chemical applications. - High Strength and Durability:
These pipes retain high mechanical strength even under intense pressure, and stress. Long-term performance under demanding operating conditions is ensured by their robustness, and fatigue resistance. - High-Temperature Performance:
Inconel 625 has excellent design features, that allow it to function well at temperatures as high as 1000°C. These pipes are ideal for high temperature applications like exhaust systems, and reactors as it is resistant to thermal deformation, and scaling. - Weldability and Formability
The alloy can be welded and shaped easily by conventional methods without cracking. Its excellent ductility enables complex fabrication with retained strength through welded joints. - Oxidation Resistance:
Inconel 625 develops a protective layer of stable oxide that shields it from corrosive degradation in oxidizing environments. This makes it reliable in applications exposed to high heat and air over long periods. - Crevice and Pitting Corrosion Resistance:
It resists localized forms of corrosion such as pitting and crevice attack, even in harsh chemical environments. This quality is critical in submerged or chemical processing systems. - Cost-Effectiveness:
Though the initial cost is higher, Inconel 625 pipes deliver long service life with minimal maintenance. This minimizes the rate of replacements and overall lifecycle expenses for critical systems. - Versatile Applications:
These pipes are utilized in heat exchangers, nuclear reactors, offshore platforms, and pressure vessels due to their durable qualities. t has the ability to adapt various high-performance industries.
Difference Between Inconel 625 Pipes vs Stainless Steel
The nickel-based Inconel 625 pipes are perfect for the chemical, aerospace and marine industries due to their exceptional resistance to corrosion in harsh conditions like seawater, acids and temperatures as high as 980°C. On the other hand, stainless steel pipes, which are composed of iron, chromium and nickel, are stronger and more resistant to corrosion, but it works better in less demanding applications like plumbing, food processing and construction. Stainless steel is an affordable choice for general-purpose applications, while Inconel 625 is more costly due to its superior qualities and intricate manufacturing process, as it provides long-term durability in harsh environmental conditions.
Inconel 625 Pipes Specifications
Seamless Pipe OD : ¼″ NB – 12″ NB
Welded Pipe OD : ½″ NB – 24″ NB
EFW Pipe Size : 6″ NB – 24″ NB
ASTM B167, B517, B474, B705, ASME SB167
Seamless, ERW, Welded, Fabricated
Round, Square, Rectangular, Hydraulic Etc
Single Random, Double Random & Cut Length.
Plain End, Beveled End, Treaded
SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH80, SCH 80S, SCH60, SCH80, SCH120, SCH140, SCH160, SCH XXS, SCH XS
No. 2B – Mill finish / Matte finish, No. 4 – Brushed finish, No. 8 – Mirror finish, Bright Annealed – Smooth / Slightly reflective, Polished – Smooth / Enhanced corrosion resistance,Mirror – Highly reflective,
Types of Inconel 625 Pipes
Manufacturing Types
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Seamless PipeMade from solid billets with no welds and ideal for high-pressure, high-temperature, and corrosive environments. It is used in chemical, nuclear, and thermal plants.
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Welded PipeFormed by rolling and welding flat Inconel sheets. Cost-effective for low to medium pressure use and common in general piping and exhaust systems.
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ERW PipeEdges are joined using electric resistance and offer consistent thickness and a clean finish. It is suitable for structural and light mechanical applications.
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EFW PipeIt uses electric arc fusion for larger diameters. Strong and corrosion-resistant and best for process piping and pressure systems.
Pipe Forms
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Round PipeMost widely used shape and is good for fluid and gas transport under pressure. Used in heat exchangers, boilers, and process lines.
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Square PipeProvide high structural strength and are easy to align and weld. Common in frames, fabrication, and load-bearing setups.
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Hexagonal PipeUsed in specialty or precision systems, which offer a distinct shape for tight or aesthetic spaces. Chosen for custom and lab-based designs.
Contact us today to discuss how Inconel 625 Pipes can benefit your application. Whether you need guidance in selecting the right pipes or have specific requirements, our team of experts is here to help you find the optimal solution.
Technical Details & Delivery Condition
| Element | C | Mn | Si | Fe | S | Cr2 | Al-Ti | Ni |
| min. | – | – | – | – | – | 20.0 | – | 58.0 |
| max. | 0.10 | 0.50 | 0.50 | 5.0 | 0.015 | 23.0 | 0.40 | – |
| Grade | UNS No | Tensile Stress (MPa) min | Yield Stress 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Rockwell B (HR B) max | Brinell (HB) max |
| 625 | N06625 | Psi – 135,000 , MPa – 930 | Psi – 75,000 , MPa – 517 | 42.5 | – | – |
| Grade | UNS No | BS | En | Euronorm No | AFNOR | GOST | Japanese JIS |
| Inconel 625 | N06625 | NA 21 | NiCr22Mo9Nb | 2.4856 | NC22DNB4M | ХН75МБТЮ | NCF 625 |
Inconel Steel Pipes Grades We Offer
Inconel 625 Pipe Dimensions
| OD (mm) | Pipe WT (mm) | Nominal Size (in.) | Schedule | Weight (Kg/m) |
| 13.72 | 1.65 | 1/4 | 10S | 0.50 |
| 13.72 | 2.24 | 1/4 | 40S | 0.64 |
| 13.72 | 3.02 | 1/4 | 80S | 0.81 |
| 17.15 | 1.65 | 3/8 | 10S | 0.64 |
| 17.15 | 2.31 | 3/8 | 40S | 0.86 |
| 17.15 | 3.20 | 3/8 | 80S | 1.12 |
| 21.34 | 2.11 | 1/2 | 10S | 1.02 |
| 21.34 | 2.77 | 1/2 | 40S | 1.29 |
| 21.34 | 3.73 | 1/2 | 80S | 1.65 |
| 26.67 | 2.11 | 3/4 | 10S | 1.30 |
| 26.67 | 2.87 | 3/4 | 40S | 1.71 |
| 26.67 | 3.91 | 3/4 | 80S | 2.23 |
| 33.40 | 2.77 | 1 | 10S | 2.13 |
| 33.40 | 3.38 | 1 | 40S | 2.54 |
| 33.40 | 4.55 | 1 | 80S | 3.29 |
| 33.40 | 6.35 | 1 | 160 | 4.30 |
| 42.16 | 2.77 | 1¼ | 10S | 2.73 |
| 42.16 | 3.56 | 1¼ | 40S | 3.44 |
| 42.16 | 4.85 | 1¼ | 80S | 4.53 |
| 42.16 | 6.35 | 1¼ | 160 | 5.69 |
| 48.26 | 2.77 | 1½ | 10S | 3.16 |
| 48.26 | 3.68 | 1½ | 40S | 4.11 |
| 48.26 | 5.08 | 1½ | 80S | 5.49 |
| 60.33 | 2.77 | 2 | 10S | 3.99 |
| 60.33 | 3.91 | 2 | 40S | 5.52 |
| 60.33 | 5.54 | 2 | 80S | 7.60 |
| 60.33 | 8.74 | 2 | 160 | 11.29 |
Inconel 625 Pipe Thickness Chart
| Nominal size [inches] | Outside diameter [inches] | Outside diameter [mm] | Wall thickness [inches] | Wall thickness [mm] | Weight [lb/ft] | Weight [kg/m] |
| 1/8 | 0.405 | 10.3 | 0.095 | 2.41 | 0.31 | 0.47 |
| 1/4 | 0.54 | 13.7 | 0.119 | 3.02 | 0.54 | 0.8 |
| 1/2 | 0.84 | 21.3 | 0.147 | 3.73 | 1.09 | 1.62 |
| 3/4 | 1.05 | 26.7 | 0.154 | 3.91 | 1.47 | 2.2 |
| 1 | 1.315 | 33.4 | 0.179 | 4.55 | 2.17 | 3.24 |
| 1 1/4 | 1.66 | 42.2 | 0.191 | 4.85 | 3 | 4.47 |
| 1 1/2 | 1.9 | 48.3 | 0.2 | 5.08 | 3.63 | 5.41 |
| 2 | 2.375 | 60.3 | 0.218 | 5.54 | 5.02 | 7.48 |
| 2 1/2 | 2.875 | 73 | 0.276 | 7.01 | 7.66 | 11.41 |
| 3 | 3.5 | 88.9 | 0.3 | 7.62 | 10.25 | 15.27 |
| 3 1/2 | 4 | 101.6 | 0.318 | 8.08 | 12.5 | 18.63 |
| 4 | 4.5 | 114.3 | 0.337 | 8.56 | 14.98 | 22.32 |
| 5 | 5.563 | 141.3 | 0.375 | 9.53 | 20.78 | 30.97 |
| 6 | 6.625 | 168.3 | 0.432 | 10.97 | 28.57 | 42.56 |
| 8 | 8.625 | 219.1 | 0.5 | 12.7 | 43.39 | 64.64 |
| 10 | 10.75 | 273 | 0.594 | 15.09 | 64.43 | 96.01 |
| 12 | 12.75 | 323.8 | 0.688 | 17.48 | 88.63 | 132.08 |
| 14 | 14 | 355.6 | 0.75 | 19.05 | 106.13 | 158.1 |
| 16 | 16 | 406.4 | 0.844 | 21.44 | 136.61 | 203.53 |
| 18 | 18 | 457 | 0.938 | 23.83 | 170.92 | 254.55 |
| 20 | 20 | 508 | 1.031 | 26.19 | 208.87 | 311.17 |
| 24 | 24 | 610 | 1.125 | 30.96 | 296.58 | 442.08 |
Manufacturing Process of Inconel 625 Pipes
Round Bar
Analytic
Cut to Length
Centering
Heating
Perforation
Inspection of Size
Pickling
Inspection of Surface
Lubricating
Cold Drawing (Cold Rolling)
Degreasing
Annealing
Straightening
Cut
Pickling / Passivating
Inspection
Analytic
Marking
Packing & Shipping
Applications of Inconel 625 Pipes
Why Choose Midland Alloys Inc. for Inconel 625 Pipes
Frequently Asked Questions About Inconel 625 Pipes
No, Inconel 625 is appropriate for non-magnetic applications as it is non-magnetic, when annealed.
Inconel 625 can reach a maximum hardness of roughly 220 HB (Brinell Hardness), when annealed.
No, Inconel 625 provides outstanding resistance to corrosion and rust in freshwater and saltwater settings.
