Corrosion-resistant Nickel Alloy 718 Marine Industry Pipe
Excellent tensile strength, yield strength, and creep-rupture strength at temperatures up to 648°C (1200°F).
Excellent corrosion and oxidation resistance in extreme environments.
Excellent weldability and resistance to post-weld cracking.
Long-term mechanical stability under high stress and high temperature.
As a leading supplier and manufacturer in China, GNEE Steel provides cost-effective nickel-based alloy products.
- Send E-mail: ss@gneesteel.com
Gnee Super Alloy (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of corrosion-resistant nickel alloy 718 marine industry pipe in China. If you're going to wholesale high quality corrosion-resistant nickel alloy 718 marine industry pipe made in China, welcome to get free sample from our factory. Good service and reasonable price are available.
Corrosion-resistant nickel alloy 718 marine industry pipe description
GNEE Corrosion-resistant nickel alloy 718 marine industry pipe
Inconel 718, a nickel-chromium alloy, is an ideal choice for corrosion-resistant pipes in the marine industry due to its excellent strength and resistance to harsh environments. Its ability to withstand high temperatures and corrosive marine environments makes it suitable for a variety of applications, including seawater piping systems, offshore structures, and subsea equipment.
Corrosion-resistant alloy 718 marine industry pipe Specific Marine Applications:
Seawater Piping: Its resistance to seawater corrosion makes it suitable for piping systems handling seawater intake, withdrawal, and cooling.
Offshore Structures: Used in platforms, risers, and other critical components exposed to harsh marine conditions.
Subsea Equipment: Its strength and corrosion resistance are crucial for equipment operating in deepwater.
Corrosion-resistant nickel 718 marine industry pipe Specific Marine Environments:
Pitting and Crevice Corrosion: Inconel 718 is resistant to pitting and crevice corrosion, which are common problems in marine environments.
Chloride Ion Stress Corrosion Cracking: It is resistant to chloride ion stress corrosion cracking, a type of corrosion that can occur in marine environments.
Specification Of Inconel 718 Pipes
| Specifications : | ASTM B163, B167, B444, B704 / ASME SB163, SB167, SB444, SB704 |
|---|---|
| Seamless Size : | 1 / 8" NB - 24" NB |
| ERW Size : | 1 / 8" NB - 36" NB |
| EFW Size : | 6" NB - 100" NB |
| Outer Diameter : | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24" NB |
| Length : | Single Random, Double Random & Required Length |
| Schedule : | SCH20, SCH30, SCH20, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
Corrosion-resistant alloy 718 marine industry pipe Specification
Chemical Composition Of Inconel 718 Pipes
| Grade | C | Mn | Si | S | Cu | Fe | Ni | Cr |
|---|---|---|---|---|---|---|---|---|
| 718 | 0.10 | 0.50 | 0.50 | 0.015 | - | 5.0 | 58.0 min | - |
Mechanical Properties Of Inconel 718 Pipes
| Grade | Density | Melting Point | Yield Strength (0.2%) Offset | Tensile Strength | Elongation |
|---|---|---|---|---|---|
| 718 | 8.4 g/cm3 | 1350 °C (2460 °F) | Psi - 75,000 , MPa - 517 | Psi - 1,35,000 , MPa -930 | 42.5 |
Corrosion-resistant alloy 718 marine industry pipe Applications
Inconel 718 seamless pipe is widely used in high-end industrial applications. Typical applications include:
1. Aerospace: engine combustion chambers, turbine blades, and exhaust systems
2. Nuclear: reactor cooling system piping
3. Petrochemical: offshore drilling platforms and chemical processing piping
4. Automotive: high-performance racing car exhaust systems
Testing and Inspection of Corrosion-resistant 718 marine industry pipe
Testing (Destructive, Non Destructive)
|
Positive Material Identification – PMI Testing |
Hydrostatic Test |
|
Chemical Analysis – Spectro Analysis |
Hydrogen-Induced Cracking (HIC) Test |
|
Mechanical Testing Such as Tensile, Elongation, Reduction of Area |
Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177 |
|
Micro Test |
Radiography Test |
|
Macro Test |
Dye Penetrant Test (DP Test) |
|
Hardness Test |
Ultra Sonic Test (UT) |
|
Pitting Resistance Test |
Eddy Current Testing |
|
Intergranular Corrosion (IGC) Test |
Impact Test |
|
Flaring Test |
Bend Test |
|
Flattening Test |
|
nickel alloy 718 marine industry pipe Manufacturing Process
Raw Material Selection:
Select materials with high strength and the ability to withstand high pressure and temperature, such as Inconel, alloy steel, or non-ferrous metals.
Pipe Forming:
Extrusion: The raw material is heated and forced through a die into a cylindrical shape.
Seamless Processing: To improve the strength and integrity of the pipe, rotary piercing or extrusion processes can be used.
Heat Treatment:
Improve the mechanical properties of the pipe through processes such as annealing, normalizing, or quenching and tempering.
Welding: For longer pipes or special designs, tungsten inert gas welding (TIG) or laser welding can be used for joining.
Surface Treatment: To remove corrosion-causing oxides and impurities, pickling and passivation processes can be used.
Final Inspection and Packaging: Thoroughly inspect the pipe for compliance and quality before packaging it for appropriate transportation and storage.
Corrosion-resistant 718 marine industry pipe Surface Treatments
Gnee Steel offers four surface finishes for Inconel UNS N06600 ERW Welded Pipes: pickling, mirror polishing, polishing, and sandblasting.
718 marine industry pipe production process
Gnee Steel offers the following heat treatments for Corrosion-resistant nickel alloy 718 marine industry pipe: annealing and solution treatment + aging. Gnee Steel also offers hot working and cold working, namely hot rolling and cold drawing.
About Gnee Steel
Gnee Steel is a supplier of Corrosion-resistant nickel alloy 718 marine industry pipe. Our product offerings include seamless pipes (sizes from 4 to 219 mm, thicknesses from 0.5 to 20 mm); welded pipes (sizes from 5.0 to 1219.2 mm, thicknesses from 0.5 to 20 mm); plate (thicknesses from 0.1 to 100 mm, widths from 10 to 2500 mm); strip; alloy round bar (sizes from 3 to 800 mm, diameters from 3 to 800 mm); flat bar (sizes from 2 to 100 mm, thicknesses from 10 to 500 mm); hexagonal bar (sizes from 2 to 100 mm); wire rod; and extruded sections. We partner with steel mills to provide our customers with Alloy 718 that meets or exceeds numerous leading industry standards, including ASTM, ASME, SAE, AMS, ISO, DIN, EN, and BS. Gnee Steel stocks and sells Corrosion-resistant nickel alloy 718 marine industry pipe, tubes, pipes, plates, strip, sheets, round bars, flat bars, forging billets, hexagons, wire rod, and extruded shapes. Feel free to contact us for a quote at ss@gneesteel.com
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