YUHONG HOLDING GROUP CO., LTD
| Specification | GOST 9941-81 |
| End | Plain End / Beveled End |
| Application | Chemical, Petroleum, Power and Aerospace |
| Grade | 12X18H12T |
| Type | Seamless / Welded |
| Payment Terms | L/C,T/T |
| Supply Ability | 1500 tons per month |
| Delivery Time | Depends on quantity |
| Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap |
| Product Name | Seamless Stainless Steel tube |
| Brand Name | YUHONG |
| Model Number | GOST 9941-81 12X18H12T |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Place of Origin | China |
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Product Specification
| Specification | GOST 9941-81 | End | Plain End / Beveled End |
| Application | Chemical, Petroleum, Power and Aerospace | Grade | 12X18H12T |
| Type | Seamless / Welded | Payment Terms | L/C,T/T |
| Supply Ability | 1500 tons per month | Delivery Time | Depends on quantity |
| Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap | Product Name | Seamless Stainless Steel tube |
| Brand Name | YUHONG | Model Number | GOST 9941-81 12X18H12T |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 | Place of Origin | China |
| High Light | GOST 9941-81 stainless steel tube ，12X18H12T seamless steel tube ，1.4541 petrochemical heat exchanger tube | ||
GOST 9941-81 12X18H12T 1.4541 Seamless Stainless Steel tube For Petrochemical
It is an austenitic, titanium-stabilized stainless steel.
Key Characteristics: The addition of Titanium (Ti) provides exceptional resistance to intergranular corrosion, particularly after exposure to high temperatures in the range of 450-850°C. This makes it an ideal choice for welding and high-temperature applications.
Manufacturing Process: The "seamless" process, involving hot extrusion or pilgering, ensures a homogeneous structure with superior pressure integrity, uniformity, and reliability compared to welded alternatives.
Primary Applications: This tube is extensively used in demanding environments such as chemical processing, oil & gas, power generation, and aerospace for critical components like heat exchangers, furnace tubes, pressure vessels, and piping systems that operate under high temperatures and corrosive media.
| GOST | ASTM/AISI | GB | JIS | DIN EN/DIN | IS |
|
12X18H12T |
AISI 321 / UNS S32100 | 06Cr18Ni11Ti | SUS 321 | X6CrNiTi18-10 (Material Number 1.4541) |
321S11 / 321S31 |
1.Chemical & Mechanical Properties
| GOST 9941-81 12X18H12T Chemical Composition (%) | |||||||
|
C |
Si |
Mn |
Cr |
Ni |
S |
P |
Ti |
|
≤0.12% |
≤0.8% | 1.00%-2.00% |
17.0%-19.0% |
11.0%-13.0% |
≤0.02% | ≤0.03% | 0.50%-0.70% |
Mechanical Properties
| Tensile Strength | Elongation | Density | Operating temperature |
| 549 MPa | 35% | 7900kg/m³ | 400-900℃ |
2. Key Adventages
The stabilizing effect of Titanium (Ti) effectively prevents chromium carbide precipitation, even within the sensitization temperature range of 450-850°C, thereby eliminating the risk of intergranular corrosion after welding or high-temperature service.
Maintains excellent mechanical properties and resistance to scale formation under continuous high-temperature exposure, ensuring long-term stability and reliability of equipment.
The seamless manufacturing process ensures a continuous, homogeneous structure without the potential weak point of a longitudinal weld. This results in higher pressure integrity, superior uniformity, and consistent performance.
3. Key Applications
Used in heat exchangers, catalytic cracking units, process piping, and reactor internals, capable of withstanding various acidic media and high-temperature environments.
Applied in downhole tools, pipelines for sour service (handling sulfur-containing hydrocarbons), and heater tubes in refineries.
A key material for superheaters, reheaters in power station boilers, and high-pressure steam lines, ensuring long-term, safe operation under high temperatures and pressures.
Used in engine exhaust systems, hydraulic tubing, and other heat-resistant components that demand extreme performance-to-weight ratios.
4. Testing
| Corrosion Test | Destructive / Mechanical Testing | Radiography Testing |
| Chemical Analysis | Reverse-bend and Re. flat tests | Corrosion Testing |
|
Destructive / Mechanical Testing |
Eddy Current Testing | Micro Testing |
| Reverse-bend and Re. flat tests | Hydrostatic Testing | Macro Testing |
| Eddy Current Testing | Air Under Pressure Test | IGC Testing |
| Hydrostatic Testing | Eddy Current Testing | Ultrasonic testing |
| Visual Inspection | O.P Testing | Liquid Penetrate testing |
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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