Yuhong Group Co.,Ltd
| Bend Integrity | Controlled Ovality & Wall Thinning |
| Product Configuration | Seamless Precision U Bend Tube |
| Quality Verification | PMI, ET, UT, Hydrostatic & 3.1 MTC |
| Corrosion Resistance | Pitting, Crevice & SCC Resistance |
| Applicable Equipment | Shell&Tube heat exchanger, Surface Condenser, Waste Heat Recovery Unit (WHRU) |
| UNS N06625 / Inconel 625 | UNS N06625 / Alloy 625 |
| Strengthening Mechanism | Solid Solution Strengthened |
| Heat Treatment Condition | Solution Annealed |
| Payment Terms | T/T, L/C at sight |
| Supply Ability | 500 tons per month |
| Delivery Time | Depends on quantity |
| Packaging Details | Plastic end caps, individual tube protection, bundled with anti-scratch separators and packed in export plywood cases. |
| Brand Name | YUHONG |
| Model Number | B444 Inconel 625 Seamless U Bend Tube |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Place of Origin | China, USA, Korea, UE |
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Product Specification
| Bend Integrity | Controlled Ovality & Wall Thinning | Product Configuration | Seamless Precision U Bend Tube |
| Quality Verification | PMI, ET, UT, Hydrostatic & 3.1 MTC | Corrosion Resistance | Pitting, Crevice & SCC Resistance |
| Applicable Equipment | Shell&Tube heat exchanger, Surface Condenser, Waste Heat Recovery Unit (WHRU) | UNS N06625 / Inconel 625 | UNS N06625 / Alloy 625 |
| Strengthening Mechanism | Solid Solution Strengthened | Heat Treatment Condition | Solution Annealed |
| Payment Terms | T/T, L/C at sight | Supply Ability | 500 tons per month |
| Delivery Time | Depends on quantity | Packaging Details | Plastic end caps, individual tube protection, bundled with anti-scratch separators and packed in export plywood cases. |
| Brand Name | YUHONG | Model Number | B444 Inconel 625 Seamless U Bend Tube |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 | Place of Origin | China, USA, Korea, UE |
| High Light | ASTM B829 Inconel 625 Pipe ，Heat Exchanger Inconel 625 Pipe ，ASTM B444 Alloy 625 Pipe | ||
ASTM B444 Inconel 625 Seamless U Bend Tube
Product Overview
Precision Cold-Bent Nickel Alloy U Tubes for High-Corrosion and High-Temperature Service
ASTM B444 Inconel 625 Seamless U Bend Tubes are manufactured from solid-solution strengthened nickel-chromium-molybdenum alloy UNS N06625. The alloy provides excellent resistance to chloride-induced corrosion, oxidizing and reducing acids, and elevated-temperature oxidation. ASTM B444 covers cold-worked seamless nickel alloy pipe and tube, with UNS N06625 supplied in annealed Grade 1 or solution-annealed Grade 2 depending on service requirements.
Cold bending is performed using controlled tooling to maintain bend radius accuracy, wall thickness uniformity and ovality within project specifications. U tubes are suitable for fixed tubesheet heat exchangers where thermal expansion compensation and long-term reliability are required.
Technical Specifications
|
Item |
Specification |
|---|---|
|
Product Name |
ASTM B444 Inconel 625 Seamless U Bend Tube |
|
Material Grade |
Inconel 625 / UNS N06625 |
|
Standard |
ASTM B444 / ASME SB444 |
|
Tube Type |
Seamless U Bend Tube |
|
Manufacturing Process |
Cold Drawn + Cold Bent |
|
Delivery Condition |
Annealed or Solution Annealed |
|
Outside Diameter |
12.7–50.8 mm |
|
Wall Thickness |
0.8–6.35 mm |
|
Bend Radius |
As Per TEMA or Customer Drawing |
|
Tube Leg Length |
Customized |
|
Inspection |
UT, ET, Hydrostatic, PMI |
|
Certification |
EN 10204 3.1 |
Product Features
Excellent mechanical strength without precipitation hardening.
Controlled bend radius, low residual stress and consistent wall thickness through the bend section.
Suitable for chloride-containing environments, seawater, acidic media and mixed chemical processing streams.
Maintains structural stability in elevated-temperature applications.
Tube straightness, bend geometry and leg parallelism are verified before shipment.
Typical Applications
Shell & Tube Heat Exchangers
Steam Surface Condensers
Waste Heat Recovery Units
Petrochemical Process Heaters
Offshore Process Modules
Flue Gas Desulfurization (FGD) Systems
Marine Cooling Equipment
Nuclear Auxiliary Heat Exchangers
Chemical Reactors
Geothermal Heat Recovery Systems
Equivalent Material Grades
|
Standard |
Grade |
|---|---|
|
ASTM / ASME |
B444 / SB444 |
|
UNS |
N06625 |
|
Werkstoff |
2.4856 |
|
EN |
NiCr22Mo9Nb |
|
ISO |
Alloy 625 |
Inspection & Testing
Positive Material Identification (PMI)
Eddy Current Testing (ET)
Ultrasonic Testing (UT)
Hydrostatic Testing
Bend Radius Inspection
Wall Thinning Verification
Ovality Measurement
Dye Penetrant Test (Optional)
EN 10204 3.1 Documentation
FAQ
Can the bend radius be customized?
Yes. U bend radius and leg length can be manufactured according to TEMA standards or customer drawings.
Is solution annealed material available?
Yes. Both annealed Grade 1 and solution-annealed Grade 2 can be supplied in accordance with ASTM B444.
What inspections are performed?
PMI, ET, UT, hydrostatic testing, bend inspection and dimensional verification are available.
① Straight Tube vs U Bend Tube
|
Feature |
Straight Tube |
U Bend Tube |
|---|---|---|
|
Fabrication |
Direct Installation |
Cold-Bent Form |
|
Thermal Expansion |
External Compensation |
Built-in Flexibility |
|
Common Equipment |
General Piping |
Shell & Tube Heat Exchangers |
② Inconel 625 vs Hastelloy C276
|
Alloy |
Main Advantage |
Typical Service |
|---|---|---|
|
Inconel 625 |
High strength + oxidation resistance |
Heat exchangers, offshore, aerospace |
|
Hastelloy C276 |
Wider chemical corrosion resistance |
Aggressive chemical processing |
③ Technical Terminology
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2007
Total Annual:
50M-70M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou... Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou...
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