Yuhong Group Co.,Ltd
| Payment Terms | T/T, L/C |
| Supply Ability | 1500 tons per month |
| Delivery Time | According to the quantity |
| Packaging Details | Ply-wooden Case with plastic Cap |
| Material | TP304L, TP309, TP310S, TP316L, TP321 |
| Standard | ASTM A213, ASME SA213 |
| NDT | Eddy Current Test, Hydrostatic Test, UT, IGC, Grain Size Test , ... |
| Type | Straight , U bend , Snake Bend, Coil form |
| Surface | Bright annealed, Polished, Pickled |
| End Type | Bevled End, Plain End, Thread End |
| Brand Name | YUHONG |
| Model Number | Stainless Steel 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 | T/T, L/C | Supply Ability | 1500 tons per month |
| Delivery Time | According to the quantity | Packaging Details | Ply-wooden Case with plastic Cap |
| Material | TP304L, TP309, TP310S, TP316L, TP321 | Standard | ASTM A213, ASME SA213 |
| NDT | Eddy Current Test, Hydrostatic Test, UT, IGC, Grain Size Test , ... | Type | Straight , U bend , Snake Bend, Coil form |
| Surface | Bright annealed, Polished, Pickled | End Type | Bevled End, Plain End, Thread End |
| Brand Name | YUHONG | Model Number | Stainless Steel Seamless Tube |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 | Place of Origin | China |
| High Light | Power Plants Stainless Steel Seamless Tube ，Refineries Stainless Steel Seamless Tube ，ASME SA213 Stainless Steel Seamless Tube | ||
1. Material Composition
| Grade | UNS Designation | C | Mn | P | S | Si | Cr | Ni | Mo | Other |
| TP321 | S32100 | 0.08 | 2.00 | 0.045 | 0.03 | 1 | 17.0–19.0 | 9.0–12.0 | ... | ... |
2. Mechanical Properties
3. Manufacturing & Heat Treatment
Produced via seamless processes (hot extrusion, rotary piercing).
Solution Annealed: Heated to 1040–1120°C followed by rapid cooling to dissolve carbides and optimize corrosion resistance.
4. Applications
Operate in steam boilers at 450–700°C, where TP321 resists oxidation and creep deformation.
Titanium stabilization prevents intergranular corrosion during cyclic heating/cooling.
Withstand high-pressure steam (up to 925°C continuous) in coal-fired, nuclear, or biomass plants.
Exposed to 800–950°C hydrocarbon streams; TP321 handles thermal cycling and carburization.
Resists sulfidation and chloride-induced stress corrosion cracking (SCC) in hydrogen-rich environments.
Used in sour gas or acidic media due to resistance to pitting and general corrosion.
5. Testing & Compliance
Mandatory Tests: Hydrostatic/nondestructive testing, mechanical tests (tensile, hardness), flattening, flaring, and reverse-flange tests.
Certification: Complies with ASME Section II (Materials) and Section I/VIII (Construction). Markings include standard, grade, size, and heat number.
6. Advantages Over Similar Grades
Superior to TP304/304L in high-temperature applications due to titanium stabilization, preventing sensitization.
Unlike TP347 (niobium-stabilized), TP321 offers better weldability and resistance to oxidation in certain conditions.
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 HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9... YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9...
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