Seamless Inconel 686 tube
The Seamless Inconel 686 tube is a precision tube made of nickel-chromium-molybdenum-tungsten superalloy. It is made by hot extrusion or cold rolling to make sure there are no weld defects. Inconel 686 (UNS N06686) is famous for its high nickel (about 58%), chromium (19-23%), molybdenum (15-17%) and tungsten (3-4%). It has excellent corrosion resistance, high temperature strength and machinability. The seamless structure of Seamless Inconel 686 tube makes it more reliable and able to bear more pressure in extreme conditions.
Features of Seamless Inconel 686 tube
Excellent corrosion resistance: Seamless Inconel 686 tube can resist strong acid media such as sulfuric acid, hydrochloric acid, and phosphoric acid. It also resists chloride stress corrosion cracking (SCC) and is suitable for high chloride environments.
High temperature stability: Seamless Inconel 686 tube can still keep its oxidation resistance and creep resistance below 1200°C. It is suitable for high temperature and high pressure conditions.
Superior mechanical properties: Seamless Inconel 686 tube has high tensile strength and fatigue life. It also keeps good ductility. This makes it easy to form and weld.
Versatility: Seamless Inconel 686 tube adds tungsten and molybdenum. This further increases its resistance to localized corrosion such as pitting and crevice corrosion.
Applications of Seamless Inconel 686 tube
In chemical and petrochemical fields: Seamless Inconel 686 tube is used to make acid treatment equipment, reactor piping, and heat exchangers. It is especially used in harsh environments with sulfur and chlorine.
In marine engineering: Seamless Inconel 686 tube is used in seawater desalination systems and submarine parts. It can resist seawater corrosion.
In the energy field: Seamless Inconel 686 tube is used as piping in nuclear power cooling systems or high temperature ducts in gas turbines.
In the environmental protection field: Seamless Inconel 686 tube is a key part of flue gas desulfurization (FGD) systems. It can endure acid exhaust gases.
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Parameter |
Typical Range |
Applicable Standards |
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Outer Diameter (OD) |
6 mm – 250 mm |
ASTM B622, ASTM B626, ASME SB622 |
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Wall Thickness (WT) |
0.5 mm – 20 mm |
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Length |
3 m – 12 m (custom lengths up to 18m+) |
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Manufacturing Process |
Hot extrusion, cold rolling, cold drawing |
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Surface Finish |
Pickling, bright annealing, polished (Ra≤0.8μm optional) |
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Tolerances |
±5% wall thickness, ±0.1mm OD (high precision available) |
ASTM B829, EN ISO 9445 |
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Pressure Rating |
Complies with ASME B31.3 (process piping) |
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Temperature Range |
-200°C to +1200°C (short-term peak) |
FAQ
Are you a factory or manufacturer?
A: Yes, we are a factory but we generally use our trading company to handle the business abroad. It will be more convenient to receive the remittance and arrange the shipment.
What is the delivery method?
A: Generally, we send cargo by UPS, DHL or FedEx. Also, we can send by sea to seaport or by air to the closest airport.
Why is your product so cost-effective?
A: We cut out the middlemen in the end-to-end manufacturing process and we obtain raw material directly from its source.
Do you do spot quality inspection or full inspection?
A: 100% full inspection for sure. All unqualified products are discarded.
How do you ensure your lead time?
A: From material preparation to machining and finally to a full inspection. Every stage of production is strictly monitored and controlled to give you an accurate delivery time.
What is the MOQ of Seamless Inconel 686 tube?
A: Depends on quantity, generally, no MOQ limit.
How to pay for it?
A: A bank transfer (T/T) will be acceptable.
What is the delivery time?
A: around 7-20 days which depends on the quantity and production.
What is kind of the package?
A: Generally, we use a carton case or plywood case with protective material inside to ensure the save of cargo
What is the lead time?
A: from order placed to cargo receiving will take around 10-25 days.
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