YUHONG HOLDING GROUP CO., LTD
| Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap |
| Material | TP321 / UNS S32100 / 1.4541 |
| Payment Terms | L/C,T/T |
| Thickness | BWG10-25 |
| Length | Single Random, Double Random & Cut Length |
| Product Name | Stainless Steel Seamless Tube |
| High Light | ASTM A213 TP321 Stainless Steel Seamless Tube, EN 1.4541 Heat Exchanger Tube |
| Delivery Time | 7 DAYS |
| OD | 1/4" , 3/8", 1/2", 5/8", 3/4", 1", 1.1/4", etc. |
| End | Plain End, Beveled End |
| Standard | ASTM A213, ASME SA213 |
| Model Number | ASTM A213 TP321 Stainless Steel Seamless Tube |
| Brand Name | YUHONG |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Place of Origin | CHINA |
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Product Specification
| Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap | Material | TP321 / UNS S32100 / 1.4541 |
| Payment Terms | L/C,T/T | Thickness | BWG10-25 |
| Length | Single Random, Double Random & Cut Length | Product Name | Stainless Steel Seamless Tube |
| High Light | ASTM A213 TP321 Stainless Steel Seamless Tube, EN 1.4541 Heat Exchanger Tube | Delivery Time | 7 DAYS |
| OD | 1/4" , 3/8", 1/2", 5/8", 3/4", 1", 1.1/4", etc. | End | Plain End, Beveled End |
| Standard | ASTM A213, ASME SA213 | Model Number | ASTM A213 TP321 Stainless Steel Seamless Tube |
| Brand Name | YUHONG | Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Place of Origin | CHINA | ||
| High Light | ASTM A213 TP321 stainless steel tube ，EN 1.4541 heat exchanger tube ，UNS S32100 stainless steel tube | ||
ASTM A213 TP321 / UNS S32100 Stainless Steel Seamless Tube Heat Exchanger Tube
ASTM A213/ASME SA213 defines seamless austenitic stainless-steel tubes for boilers, superheaters, and heat exchangers. Grade TP321 (UNS S32100), equivalent to EN 1.4541, is the titanium-stabilized variant of Type 304. The titanium addition (≥5×(C+N)) prevents sensitization by forming stable titanium carbides, eliminating chromium depletion at grain boundaries. This provides outstanding resistance to intergranular corrosion, especially during welding or service within 425°C–815°C. These tubes offer high creep strength and oxidation resistance up to ~900°C. Supplied solution-annealed, they meet 515 MPa minimum tensile strength. They are used in refinery heaters, chemical processing, and power-generation exchangers requiring high-temperature stability.
Equivalent Grade of ASTM A213 UNS S32100 / TP304 / EN 1.4541 Stainless Steel Seamless Tube
| STANDARD | WERKSTOFF NR. | UNS | JIS | EN |
| SS 321 | 1.4541 | S32100 | SUS 321 | X6CrNiTi18-10 |
Chemical Composition (%) of ASTM A213 UNS S32100 / TP304 / EN 1.4541 Stainless Steel Seamless Tube
| C | Mn | P | S | Si | Cr | Ni | Ti |
| 0.08 | 2.00 | 0.045 | 0.03 | 1.00 | 17.0-19.0 | 9.0-12.0 | 5(C+N)-0.7 |
Mechanical Properties of ASTM A213 UNS S32100 / TP304 / EN 1.4541 Stainless Steel Seamless Tube
| Tensile Strength min. | Yield Strength min. | Elongation (%) | Hardness max | |
| 75ksi (515MPa) | 30ksi (205MPa) | 35min | 192HBW/200HV | 90 HRB |
Specific Requirements for Heat Exchanger Tubes
Under ASTM A213, tubes intended for heat exchangers must meet strict non-destructive testing (NDT) requirements:
Dimensions: Outside diameter (OD) ranges typically from 1/8" to 5" (3.2mm to 127mm), with minimum wall thicknesses.
Flattening Test & Flaring Test: Required to prove ductility for tube rolling into tube sheets.
Hydrostatic Test or NDT: Each tube must pass either a hydrostatic pressure test (without leakage) or an eddy-current / ultrasonic test (per ASME Section V).
Surface Finish: Must be free of scale, pits, and cracks. Internal bore cleanliness is critical for heat transfer efficiency.
Refinery Crude Heaters: Especially where sulfur-containing fuels are burned (prevents polythionic acid stress corrosion cracking).
Chemical Process Industries: Handling organic and inorganic chemicals (excluding highly oxidizing acids like hot concentrated nitric acid at certain concentrations).
Power Generation: Superheaters and reheaters requiring high creep resistance.
Aerospace and Petrochemical: High-temperature fluid-to-air or fluid-to-fluid cooling/heating coils.
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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