Our Nickel-Chromium Inconel 718 coil tubes are built to tackle the toughest challenges in the oil and gas industry. This high-performance nickel alloy is a game-changer for applications demanding strength, corrosion resistance, and reliability in extreme conditions. From deep-sea rigs to high-pressure wells, our Inconel 718 coil tubes deliver top-tier performance. Let’s break down what makes this product stand out, explore its applications, dive into industry trends, and show why our company is your best bet for sourcing these tubes.
For more details, pls directly contact us.
Inconel 718, sometimes called GH4169, is a nickel-chromium superalloy packed with niobium, molybdenum, titanium, and aluminum. It’s designed to handle the harshest environments, making it a perfect fit for oil and gas applications. Our coil tubes meet ASTM B637 standards, ensuring they’re up to the task for high-stress, high-temperature, and corrosive conditions. With a composition of 50-55% nickel, 17-21% chromium, 4.75-5.50% niobium, and other key elements, these tubes boast a density of 8.19 g/cm³ and a melting range of 1260°C to 1336°C.
Our Inconel 718 coil tubes are crafted through advanced processes like vacuum induction melting (VIM) and vacuum arc remelting (VAR), followed by cold drawing and precise heat treatments—solution annealing at 1700-1850°F and two-stage aging at 1325°F and 1150°F. This results in exceptional mechanical properties: a minimum tensile strength of 185 ksi (1275 MPa), yield strength of 150 ksi (1034 MPa), and 12% elongation at room temperature. They resist oxidation up to 1800°F (980°C) and combat corrosion in environments like hydrogen sulfide and chloride-rich seawater.
Available in outer diameters from 0.125” to 1” and wall thicknesses from 0.028” to 0.083”, our coil tubes are flexible for a range of oilfield needs. They’re weldable in the aged condition, which simplifies fabrication for complex systems. Whether you’re running hydraulic lines or chemical injection systems, our tubes are engineered to last.
|
Item |
Inconel 600 |
Inconel 601 |
Inconel 625 |
Inconel 718 |
Inconel X750 |
Inconel 825 |
||
|
C |
≤0.15 |
≤0.1 |
0.05-0.15 |
≤0.08 |
≤0.05 |
≤0.08 |
≤0.08 |
≤0.05 |
|
Mn |
≤1 |
≤1.5 |
≤0.5 |
≤0.35 |
≤0.5 |
≤0.35 |
≤1 |
≤1 |
|
Fe |
6-10 |
rest |
≤3 |
rest |
7-11 |
rest |
5-9 |
≥22 |
|
P |
≤0.015 |
≤0.02 |
≤0.015 |
-- |
-- |
-- |
-- |
-- |
|
S |
≤0.015 |
≤0.015 |
≤0.015 |
≤0.015 |
≤0.015 |
≤0.01 |
≤0.01 |
≤0.03 |
|
Si |
≤0.5 |
≤0.5 |
≤0.5 |
≤0.35 |
≤0.5 |
≤0.35 |
≤0.5 |
≤0.5 |
|
Cu |
≤0.5 |
≤1 |
-- |
≤0.3 |
≤0.5 |
≤0.3 |
≤0.5 |
1.5-3 |
|
Ni |
≥72 |
58-63 |
≥44.5 |
50-55 |
≥58 |
50-55 |
≥70 |
38-46 |
|
Co |
-- |
-- |
10-15 |
≤10 |
-- |
≤1 |
≤1 |
-- |
|
Al |
-- |
1-1.7 |
0.8-1.5 |
≤0.8 |
-- |
0.2-0.8 |
0.4-1 |
≤0.2 |
|
Ti |
-- |
-- |
≤0.6 |
≤1.15 |
-- |
-- |
2.25-2.75 |
0.6-1.2 |
|
Cr |
14-17 |
21-25 |
20-24 |
17-21 |
27-31 |
17-21 |
14-17 |
19.5-23.5 |
|
Nb+Ta |
-- |
-- |
-- |
4.75-5.5 |
-- |
4.75-5.5 |
0.7-1.2 |
-- |
|
Mo |
-- |
-- |
8-10 |
2.8-3.3 |
-- |
2.8-3.3 |
-- |
2.5-3.5 |
|
B |
-- |
-- |
≤0.006 |
-- |
-- |
-- |
-- |
-- |
|
Shape |
Size (mm) |
|
Wire |
0.02-7.50 |
|
Rod/Bar |
8.0-200 |
|
Strip |
(0.5-2.5)*(5-180) |
|
Tube/Pipe |
Customized |
|
Sheet/Plate |
Customized |
For more details, pls directly contact us.
The oil and gas industry is a demanding space, and the need for high-performance materials like Inconel 718 is growing. The global nickel alloy market is expected to expand at a CAGR of about 4.8% through 2030, driven by increased offshore exploration, deepwater drilling, and the rise of unconventional resources like shale gas. Harsh environments—think sour gas wells, high-pressure/high-temperature (HPHT) reservoirs, and corrosive offshore conditions—are pushing demand for materials that can take a beating and keep performing.
Sustainability is also shaping the industry. Operators are looking for durable materials to reduce maintenance and extend equipment life, cutting costs and environmental impact. Inconel 718 fits the bill with its long-lasting performance in extreme conditions. Meanwhile, advancements in coiled tubing technology, like longer continuous lengths and enhanced corrosion resistance, are making Inconel 718 a go-to choice for modern oilfield operations.
Supply chain challenges, like nickel price fluctuations and complex alloy production, mean reliability is key. Companies need suppliers who can deliver consistent quality, fast lead times, and customized solutions. That’s where our expertise and streamlined production give us an edge, ensuring you get the right product when you need it.
Applications of Inconel 718 Coil Tubes
Our Inconel 718 coil tubes are a mainstay in oil and gas, where extreme conditions are the norm. They’re used in downhole tubing for drilling and completion in high-pressure, high-temperature wells, where they handle temperatures up to 1300°F (700°C) and resist hydrogen sulfide corrosion in sour gas environments. Hydraulic control lines and chemical injection systems also rely on these tubes for their ability to withstand aggressive fluids like acids and seawater.
In offshore platforms, Inconel 718 coil tubes are critical for umbilical systems, delivering hydraulic fluid or chemicals to subsea equipment. Their resistance to pitting and chloride-ion stress-corrosion cracking ensures reliability in salty, corrosive conditions. Onshore, they’re used in shale gas and tight oil operations, where high strength and durability are essential for long-term performance.
Beyond oil and gas, these tubes find use in related industries. In petrochemical plants, they handle aggressive chemicals in heat exchangers and piping systems. In aerospace-inspired applications, like gas turbine fuel lines, their high-temperature strength shines. Even in cryogenic settings, such as liquefied natural gas (LNG) systems, they maintain toughness at -423°F (-253°C). Their versatility makes them a go-to for any high-stakes application.
Comparison with a Competitor
When it comes to choosing a supplier for Inconel 718 coil tubes, we stand head and shoulders above the rest. Our tubes are produced with cutting-edge vacuum melting and cold-drawing techniques, ensuring ultra-clean material with minimal defects. This translates to better performance and longer life in your oilfield equipment compared to what a typical competitor might offer.
We hold AS9100D and NADCAP certifications, so our quality meets the toughest industry standards. Every batch undergoes rigorous testing—chemical composition, mechanical properties, ultrasonic inspection, and more—with full traceability to give you peace of mind. Some competitors cut corners on testing or lack the same level of certifications, which can lead to inconsistent performance.
Our supply chain is optimized for speed and flexibility. Whether you need small-diameter tubes for chemical injection or thicker-walled ones for downhole applications, we deliver customized solutions fast. Many competitors struggle with long lead times or limited size options, but we prioritize getting your project moving. Our technical team also works hand-in-hand with you to ensure the tubes meet your exact specs, offering a level of support you won’t always find elsewhere.
Why Choose Our Inconel 718 Coil Tubes?
Our Inconel 718 coil tubes are built for the real world—tough, reliable, and ready for the harshest oil and gas environments. We start with high-purity raw materials and use advanced manufacturing to produce tubes that meet ASTM B637 standards every time. Our rigorous testing, including ultrasonic and microstructural analysis, ensures you get a product you can trust.
Customization is at the heart of what we do. Need a specific diameter, wall thickness, or surface finish? We’ll make it happen. Our fast lead times keep your project on schedule, even for urgent orders. With decades of experience supplying the oil and gas industry, we’ve built a reputation for quality and reliability, working with top operators worldwide.
We’re also committed to sustainability. Our durable tubes reduce downtime and replacement costs, aligning with the industry’s push for greener solutions. From deepwater rigs to onshore wells, our Inconel 718 coil tubes deliver the performance you need, backed by a team that’s with you every step of the way.
Comparison Parameters Table
|
Parameter |
Inconel 718 Coil Tubes |
Other Nickel Alloys |
|---|---|---|
|
Tensile Strength (Room Temp) |
≥ 185 ksi (1275 MPa) |
100–160 ksi |
|
Yield Strength (Room Temp) |
≥ 150 ksi (1034 MPa) |
80–130 ksi |
|
High-Temp Strength (650°C) |
≥ 1035 MPa |
600–900 MPa |
|
Corrosion Resistance |
Superior (H2S, seawater) |
Moderate to good |
|
Oxidation Resistance |
Up to 1800°F (980°C) |
Up to 1600°F (870°C) |
|
Weldability |
Excellent (aged condition) |
Moderate to difficult |
|
Temperature Range |
-423°F to 1300°F |
-200°F to 1000°F |
|
Wall Thickness Range |
0.028”–0.083” |
0.035”–0.120” |
Nickel-Chromium Inconel 718 coil tubes are a powerhouse for the oil and gas industry, offering unmatched strength, corrosion resistance, and reliability in extreme conditions. With a growing market driven by offshore exploration, HPHT wells, and sustainable practices, these tubes are more critical than ever. Our company’s advanced manufacturing, rigorous quality control, and customer-focused approach make us the top choice for Inconel 718 coil tubes. Whether you’re tackling a deep-sea project or a high-pressure onshore well, our tubes are built to perform, and we’re here to help you get the job done right.
For more details, pls directly contact us.
|
|
|
|
|
|
About Us:
Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications.
For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.
Client Visits
Building Stronger Partnerships
We support all kinds of testing:
FAQs:
-
What is Nickel-Chromium Inconel 718 made of?
It’s a nickel-chromium alloy with niobium, molybdenum, titanium, and aluminum, offering high strength and corrosion resistance. -
Why are Inconel 718 coil tubes ideal for oil and gas?
They withstand extreme temperatures up to 1300°F (700°C) and resist corrosion in harsh environments like seawater and acidic gases. -
What specific oil and gas applications use Inconel 718 coil tubes?
They’re used in downhole tubing, hydraulic lines, chemical injection systems, and control lines in offshore and onshore wells. -
How are Inconel 718 coil tubes manufactured?
They’re produced via vacuum induction melting, cold drawing, solution annealing, and precipitation hardening for optimal performance. -
What are the mechanical properties of Inconel 718 coil tubes?
They offer a tensile strength of at least 185 ksi (1275 MPa), yield strength of 150 ksi (1034 MPa), and 12% elongation. -
Are Inconel 718 coil tubes weldable?
Yes, they can be welded in the aged condition, making them suitable for complex oilfield assemblies. -
How do Inconel 718 coil tubes perform in corrosive environments?
They resist pitting, chloride-ion stress-corrosion cracking, and hydrogen sulfide, ideal for sour gas wells. -
What sizes are available for Inconel 718 coil tubes?
Available in outer diameters from 0.125” to 1” and wall thicknesses from 0.028” to 0.083”, customizable for specific needs.