Yuhong Group Co.,Ltd
| Payment Terms | T/T,L/C |
| Supply Ability | 5000 tons per month |
| Delivery Time | depend on quantity |
| Packaging Details | Plywood case/Woven bag in bundle |
| Specification | ASTM A213; ASME SA213 |
| Material | TP444 |
| Application | Heat Exchanger; Boiler |
| Package | Plywood case/Woven bag in bundle |
| Brand Name | YUHONG |
| Model Number | YH-HX-UT-444 |
| Certification | ASME,ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2015 |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T,L/C | Supply Ability | 5000 tons per month |
| Delivery Time | depend on quantity | Packaging Details | Plywood case/Woven bag in bundle |
| Specification | ASTM A213; ASME SA213 | Material | TP444 |
| Application | Heat Exchanger; Boiler | Package | Plywood case/Woven bag in bundle |
| Brand Name | YUHONG | Model Number | YH-HX-UT-444 |
| Certification | ASME,ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2015 | Place of Origin | China |
| High Light | TP444 U Bend Tube ，ASTM B677 U Bend Tube ，U Bend ASTM A213 Tube | ||
ASME SA213 TP444 Stainless Steel U Bend Heat Exchanger Tube
Introduction
The ASME SA213 TP444 is a ferritic stainless steel tube designed for high-temperature and corrosive environments, commonly used in heat exchangers, boilers, and superheaters. The U-bend design allows for thermal expansion and efficient heat transfer in shell-and-tube heat exchangers.
Material Specifications
Standard: ASME SA213 (Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes)
Grade: TP444 (A ferritic stainless steel with improved corrosion resistance)
UNS Designation: S44400
Chemical Composition
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 17.5 - 19.5 |
| Molybdenum (Mo) | 1.75 - 2.50 |
| Nickel (Ni) | ≤ 1.00 |
| Manganese (Mn) | ≤ 1.00 |
| Silicon (Si) | ≤ 1.00 |
| Carbon (C) | ≤ 0.025 |
| Nitrogen (N) | ≤ 0.035 |
| Titanium (Ti) / Niobium (Nb) | Stabilized (for improved corrosion resistance) |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 415 MPa (60 ksi) |
| Yield Strength | ≥ 275 MPa (40 ksi) |
| Elongation | ≥ 20% |
| Hardness (Rockwell B) | ≤ 90 HRB |
Key Features & Advantages
Excellent Corrosion Resistance – Resists pitting, crevice corrosion, and stress corrosion cracking (SCC) in chloride environments.
High-Temperature Performance – Suitable for heat exchangers operating in elevated temperatures.
Ferritic Structure – Magnetic, with good resistance to oxidation and scaling.
Stabilized with Ti/Nb – Prevents sensitization and intergranular corrosion.
U-Bend Design – Allows thermal expansion, reduces stress, and improves heat transfer efficiency.
Applications
Shell-and-tube heat exchangers
Condensers & evaporators
Power plant boilers & superheaters
Chemical processing equipment
Oil & gas refineries
Manufacturing & Testing
Seamless construction (cold-drawn or hot-finished)
U-bend forming (cold bending with precise radius)
Non-destructive testing (NDT) (Eddy current, hydrostatic, ultrasonic)
Heat treatment (Annealed for optimal corrosion resistance)
Comparison with Other Grades
| Grade | Type | Key Difference |
|---|---|---|
| TP304/TP316 | Austenitic | Higher Ni content, better toughness |
| TP430 | Ferritic | Lower Mo, less corrosion resistance |
| TP444 | Ferritic | Higher Mo & stabilization, better chloride resistance |
Conclusion
The ASME SA213 TP444 U-bend tube is ideal for corrosive and high-temperature heat exchanger applications, offering superior chloride resistance compared to standard ferritic grades. Its U-bend design enhances thermal performance while minimizing mechanical stress.
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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