YUHONG HOLDING GROUP CO., LTD
| Payment Terms | L/C,T/T |
| Delivery Time | 7days |
| Packaging Details | Ply-wooden Case / Bundle with plastic Cap |
| Production Name | Nickel Alloy Tube |
| Standard | ASTM B163, ASME SB163 |
| Material | Incoloy/Alloy 825, UNS N08825, 2.4858 |
| OD | 1/4" , 3/8", 1/2", 5/8", 3/4", 1", 1.1/4", etc. |
| WT | BWG 25, 22, 20, 18 ... 10 |
| Length | Single Random, Double Random & Cut Length |
| Tube End | Plain End, Beveled End |
| Process | Cold Drawn |
| Application | Boiler, Heat Exchanger, Oil and Gas Plant, Cooling, Condenser |
| High Light | ASTM B163 UNS N08825 Nickel Alloy Steel Tube, Alloy 825 Seamless Heat Exchanger Tube |
| Brand Name | YUHONG |
| Model Number | ASTM B163 UNS N08825 Nickel Alloy Seamless Tube |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | L/C,T/T | Delivery Time | 7days |
| Packaging Details | Ply-wooden Case / Bundle with plastic Cap | Production Name | Nickel Alloy Tube |
| Standard | ASTM B163, ASME SB163 | Material | Incoloy/Alloy 825, UNS N08825, 2.4858 |
| OD | 1/4" , 3/8", 1/2", 5/8", 3/4", 1", 1.1/4", etc. | WT | BWG 25, 22, 20, 18 ... 10 |
| Length | Single Random, Double Random & Cut Length | Tube End | Plain End, Beveled End |
| Process | Cold Drawn | Application | Boiler, Heat Exchanger, Oil and Gas Plant, Cooling, Condenser |
| High Light | ASTM B163 UNS N08825 Nickel Alloy Steel Tube, Alloy 825 Seamless Heat Exchanger Tube | Brand Name | YUHONG |
| Model Number | ASTM B163 UNS N08825 Nickel Alloy Seamless Tube | Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Place of Origin | CHINA | ||
| High Light | ASTM B163 Nickel Alloy Seamless Tube ，Incoloy Alloy 825 Heat Exchanger Tube ，UNS N08825 Seamless Steel Tube | ||
ASTM B163 / ASME SB163 UNS N08825 Alloy 825 Seamless Nickel Alloy Tube for Heat Exchanger
Key Properties of Incoloy 825 for Heat Exchangers
Outstanding resistance to: Sulfuric acid (up to moderate concentrations), phosphoric acid, seawater, and reducing acids.
Excellent resistance to: Chloride stress corrosion cracking (SCC), pitting, and crevice corrosion.
High temperature oxidation resistance: Good up to ~1800°F (982°C) intermittent, ~1650°F (899°C) continuous.
Why it works: The combination of Ni-Cr-Mo-Cu provides protection in both oxidizing and reducing environments. Added Titanium stabilizes it against intergranular corrosion.
Equivalent Grades of ASTM B163 Alloy 825 UNS N08825 Nickel Alloy Seamless Tube
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN | OR |
| Incoloy 825 | 2.4858 | N08825 | NCF 825 | NA 16 | ЭП703 | NFE30C20DUM | NiCr21Mo | XH38BT |
Chemical Composition % of ASTM B163 Alloy 825 UNS N08825 Nickel Alloy Seamless Tube
| Grade | C | Mn | Si | S | Cu | Fe | Ni | Cr | Al | Ti |
| Incoloy 825 | 0.05 max | 1.00 max | 0.05 max | 0.03 max | 1.50 – 3.00 | 22.00 min | 38.00 – 46.00 | 19.50 – 23.50 | 0.02 max | 0.06 – 1.20 |
Mechanical properties of ASTM B163 Alloy 825 UNS N08825 Nickel Alloy Seamless Tube
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Incoloy 825 | 8.14 g/cm3 | 1400 °C (2550 °F) | Psi – 80,000 , MPa – 550 | Psi – 32,000 , MPa – 220 | 30 % |
Non‑Destructive Testing (NDT) – Hidden Options
ASTM B163 permits either a hydrostatic test or an eddy current (ET) test for acceptance, but this creates subtle traps:
Hydrostatic test: Standard pressure = calculated from allowed fiber stress (50% of yield) but many users miss the requirement to hold pressure for at least 5 seconds per inch of OD. For gas service, a pneumatic test is not required by B163 – you must invoke ASME B31.3 or client specification.
Eddy current test: Only valid for tubes ≤ 4 inches OD. Calibration uses a 0.031” deep notch. However, ET does not detect through‑wall leaks or axial cracks. For corrosive service where pitting is possible, insist on hydrostatic or ultrasonic testing.
Hydrostatic vs. ET cost: Many mills default to ET because it is faster. Always confirm the test method on your PO.
Application
Chemical processing: Heater, reboilers, and condenser tubes in sulfuric/phosphoric acid service.
Oil & gas: Sour gas service (wet H₂S), wellhead heat exchangers, downhole tubing.
Marine: Seawater heat exchangers, evaporators, scrubbers.
Pollution control: Stack liners, flue gas desulfurization (FGD) systems.
Nuclear: Moderator cooling circuits (CANDU reactors).
Company Details
Business Type:
Manufacturer,Importer,Exporter,Trading Company,Seller,Other
Year Established:
1990
Total Annual:
50M-70M
Employee Number:
50~800
Ecer Certification：
Verified Supplier
Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n... Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n...
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