Inconel 718 Pipes – Manufacturer
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Midland Alloys Inc. is a leading Indian manufacturer and global supplier of Inconel 718 seamless pipes, catering to high performance industries and industrial customers. Being one of India’s top suppliers of Inconel 718, we provide high-end products designed to resist harsh temperatures, pressures, and corrosive environments. With their precise chemical composition, consistent mechanical properties and dependable tensile strength, our Inconel 718 pipes are manufactured to fulfill the precise requirements of chemical, marine and aerospace applications. These pipes provide an exceptional ratio of elongation, yield strength, and area reduction, ensuring structural integrity and long-term durability in demanding working conditions.
Benefits of Inconel 718 Seamless Pipes
- Outstanding durability at temperatures as high as 700°C
- High resilience to pitting and oxidation in challenging conditions
- Maintains its tensile and yield strength when subjected to high pressure.
- Easy to build and weld without post-weld cracking
- Endures service at high temperatures and cryogenic conditions.
- Suitable for intricate projects requiring accurate machining
- Provides extended service life and reduces the need for maintenance.
- Cost-effective solution for other high-performance alloys
The difference between Inconel Alloy 625 and Inconel Alloy 718
Inconel 718 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 718 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 718 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 | S | Cr | Ni | Mo | Cu | Al | Ti | Nb+Ta | Fe |
| Min. | – | – | – | – | 17.0 | 50.0 | 2.80 | – | 0.20 | 0.65 | 4.75 | Balance |
| Max. | 0.08 | 0.35 | 0.35 | 0.015 | 21.0 | 55.0 | 3.30 | 0.30 | 0.80 | 1.15 | 5.50 | Balance |
| Alloy | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Reduction of Area (%) min | Hardness Rockwell C (HRC) max |
| Inconel 718 Pipe | 1375 (200 ksi) | 1100 (160 ksi) | 12 | 15 | 40 |
| Grade | UNS No | BS | En | Euronorm No | AFNOR | GOST | Japanese JIS |
| Inconel 718 Pipe | N07718 | NA 51 | NiCr19NbMo | 2.4668 | NC19FeNb | ЭП718 | NCF 718 |
Inconel Steel Pipes Grades We Offer
Inconel 718 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 718 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 718 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 718 Pipes
Why Choose ASTM B163 UNS N07718 Seamless Pipe from Midland Alloys Inc.
Midland Alloys Inc. is a reliable Indian manufacturer and exporter of high-quality ASME SB163 UNS N07718 Seamless Pipe, backed by ISO 9001:2015, ISO 14001:2015, ISO 45001:2018 and PED 2014/68/EU certifications. As a trusted Nickel Alloy 718 Seamless Pipe supplier, we are committed to precision manufacturing and strict compliance with international standards. Our products range from cut-to-length pipes, special end finishes, non-standard wall thickness to custom surface treatments. We ensure each Inconel 718 Seamless Pipe adheres strictly to specifications through in-house examination, mill test certificates and third-party tests. With clients all over the Gulf, Europe, Africa, and Southeast Asia, as we have a strong global presence. Our team ensures on-time delivery, efficient logistics, and personal assistance for small as well as bulk orders. All pipes are marked according to ASTM/ASME specifications and delivered with Mill Test Certificates (MTC) by ensuruing their chemical and mechanical properties, and maintain long-term relations based on trust, quality, and customer satisfaction.
Frequently Asked Questions About Inconel 718 Pipes
Yes, these pipes function well, at temperatures ranging from cryogenic to elevated.
High strength, resistance to corrosion and resistance to oxidation at temperatures as high as 1300°F (704°C), are requirements for Inconel 718. Extreme temperatures and high pressures don’t affect its performance.
