Yuhong Group Co.,Ltd
| Payment Terms | T/T, L/C |
| Supply Ability | 1000 tons per month |
| Delivery Time | Depends on quantity |
| Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap |
| Product Name | Stainless Steel Seamless Pipe |
| Shape | Round |
| Specification | ASTM A312 |
| Surface | Pickeled Annealed |
| Type | Seamless / Welded |
| Length | Max 34M/PC |
| Brand Name | YUHONG |
| Model Number | ASTM A312 TP321 |
| 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 | 1000 tons per month |
| Delivery Time | Depends on quantity | Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap |
| Product Name | Stainless Steel Seamless Pipe | Shape | Round |
| Specification | ASTM A312 | Surface | Pickeled Annealed |
| Type | Seamless / Welded | Length | Max 34M/PC |
| Brand Name | YUHONG | Model Number | ASTM A312 TP321 |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 | Place of Origin | CHINA |
| High Light | ASTM A312 TP321 stainless steel pipe ，UNS 32100 seamless furnace pipe ，stainless steel seamless pipe for furnace | ||
ASTM A312 TP321 UNS 32100 Stainless Steel Seamless Pipe
| UNS Designation | C | Mn | P | S | Si | N | Cr | Mo |
| S32100 | 0.08 | 2 | 0.045 | 0.03 | 1 | 17.0–19.0 | 9.0–12.0 | ... |
YUHONG GROUP is focused on the production of Austenitic Stainless Steel, Nickel Alloy Steel(Hastelloy , Monel, Inconel, Incoloy ) seamless and welded pipe and tube already more than 35 years. We have been exported to more than 85 countries.
Outside diameter and Tolerance
| Hot rolled | Outside Diameter, mm | Tolerance |
| 30≤OD≤219.1 | D2, ±1% or ±0.5mm | |
| 219.1＜OD≤610 | D1, ±1.5% or ±0.75mm | |
| Cold Drawn | Outside Diameter, mm | Tolerance |
| OD≤219.1 | D3, ±0.75% or ±0.3mm | |
| OD≤219.1 | D4, ±0.5% or ±0.1mm |
ASTM A312 TP321 Seamless Pipe Mechanical Properties
| Density | 8.027 g/cm3 |
| Melting Point | 1454 °C (2650 °F) |
| Tensile Strength(min) | 515 MPa (75 ksi) |
| Yield Strength (min) | 205 MPa (30 ksi |
| Elongation(min) | 35% (in 50 mm) |
ASTM A312 TP321 Seamless Pipe Testing and Quality Assurance
TP321 pipes undergo rigorous testing to ensure compliance with ASTM A312 standards:
ASTM A312 TP321 Pipe Comparison with Other Grades
| Grade | Key Differences from TP321 | Typical Use Cases |
| TP304 | Lower cost, no titanium stabilization; prone to sensitization | Low-temperature corrosive environments |
| TP316 | Molybdenum addition for better pitting resistance | Marine and chloride-rich environments |
| TP321H | Higher carbon content (0.04–0.10%) for improved high-temperature strength | High-temperature pressure vessels and boilers |
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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