Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of ASTM B622 Seamless Nickel Alloy Pipe Supplier | C276, 625, 825 Manufacturer in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.
ASTM B622 seamless nickel alloy pipes and tubes are designed for extreme environments requiring superior corrosion resistance and high-temperature performance. Widely used in oil & gas, chemical processing, marine engineering, and power plants, these pipes are manufactured according to ASTM/ASME standards.
As a professional nickel alloy pipe manufacturer, we supply a full range of ASTM B622 pipes including UNS N10276 (Hastelloy C276), UNS N06625 (Inconel 625), UNS N08825 (Incoloy 825) with strict quality control, third-party inspection, and global export experience.
Professional team
Product Specifications
| Item | Specification |
|---|---|
| Standard | ASTM B622 / ASME SB622 |
| Outer Diameter | 6mm – 610mm (1/8" – 24") |
| Wall Thickness | SCH10 – SCH160 / 1mm – 50mm |
| Length | 6m, 12m, or Custom |
| Manufacturing | Seamless (Cold Drawn / Hot Finished) |
| Surface | Pickled, Annealed, Polished |
| Tolerance | According to ASTM standards |
| Ends | Plain End, Beveled End |
Available Nickel Alloy Grades
We supply a full range of ASTM B622 seamless nickel alloy pipes and tubes in the following grades:
Excellent resistance to strong oxidizing and reducing environments
Outstanding performance in seawater and chemical processing
Widely used in chemical, marine, and pollution control industries
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Hastelloy C276 pipe supplier / UNS N10276 seamless pipe
Superior high-temperature strength and oxidation resistance
Ideal for aerospace, heat exchangers, and nuclear systems
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Inconel 625 pipe / UNS N06625 tube manufacturer
Excellent resistance to sulfuric and phosphoric acids
Good performance in chloride-containing environments
Used in acid production, chemical plants, and marine applications
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Incoloy 825 pipe / UNS N08825 supplier
High resistance to oxidation and carburization
Stable mechanical properties at elevated temperatures
Suitable for furnace components and heat treatment equipment
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Inconel 600 pipe / UNS N06600 seamless tube
chemical requirements
mechanical properties of pipe and tube
pipe schedules
Products Weight
Key Features
Excellent resistance to pitting and crevice corrosion
Outstanding performance in acidic and seawater environments
High strength under elevated temperatures
Long service life with low maintenance cost
Suitable for extreme pressure systems
ASTM B622 nickel alloy pipes Applications
ASTM B622 nickel alloy pipes are widely used in
Oil & Gas pipelines
Chemical processing equipment
Heat exchangers & condensers
Marine engineering systems
Power generation plants
Inspection & Quality Assurance
We implement strict quality control systems to ensure product reliability:
PMI (Positive Material Identification)
Hydrostatic Pressure Test
Ultrasonic Testing (UT)
Eddy Current Testing
Spectrometer Chemical Analysis
Third-party inspection available (SGS, TUV, BV)
Manufacturing Process
why choose us
10+ years nickel alloy manufacturing experience
Full size stock & fast delivery
OEM & custom production supported
Competitive factory price
Project Case
Project: UAE Chemical Plant
Material: UNS N10276 (Hastelloy C276)
Specification: 4" SCH40
Quantity: 50 Tons
Application: Corrosive chemical pipeline system
ASTM B622 vs B165 vs B167
| Standard | Type | Application |
|---|---|---|
| ASTM B622 | Seamless Pipe | High corrosion environments |
| ASTM B165 | Nickel Pipe | General industrial use |
| ASTM B167 | Alloy Tube | Heat exchanger systems |
FAQ
What is ASTM B622 pipe?
ASTM B622 specifies seamless nickel alloy pipes for corrosion-resistant and high-temperature applications.
What grades are available in ASTM B622?
Common grades include C276, 625, 825, and 600.
What is the difference between B622 and B165?
B622 focuses on alloy pipes, while B165 mainly covers pure nickel materials.
What is your delivery time?
Usually 7–15 days depending on stock and customization.
Can you provide inspection certificates?
Yes, we provide MTC (EN 10204 3.1) and third-party inspection reports.
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