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UNS N02201/DIN W. NR. 2.4061, 2.4068 Seamless Pipe is a premium nickel-based seamless tube engineered as the low-carbon variant of Nickel 200. This design optimization eliminates intergranular embrittlement caused by carbon or graphite precipitation when exposed to 315-760℃ for extended periods (provided no contact with carbonaceous materials). Crafted for industrial reliability, the pipe adheres to international standards including ASTM B 161 and B 829, ensuring consistent performance across critical applications.
Key specifications are rigorously controlled: outer diameter (OD) ranges from 1mm to 325mm, wall thickness from 0.2mm to 20mm, and maximum length up to 12m (with custom lengths available upon request). Its physical properties stand out with a density of 8.89g/cm³ and a melting range of 1435-1446℃, making it suitable for high-temperature environments. The chemical composition is precisely calibrated: Ni content ≥99.00% (minimum), with trace elements limited to Fe ≤0.40%, C ≤0.02%, Mn ≤0.35%, Si ≤0.35%, S ≤0.01%, and Cu ≤0.25% (maximum), ensuring exceptional purity and corrosion resistance.
The low-carbon formulation (≤0.02%) is the core advantage, preventing embrittlement in high-temperature scenarios. While sulfur compounds can cause intergranular embrittlement above 315℃, this issue is mitigated by converting sulfates with sodium peroxide—enhancing operational flexibility. The high nickel content (≥99.00%) delivers superior resistance to corrosive media, outperforming standard alloys in harsh industrial settings.
Manufactured by a facility with 30 years of seamless pipe production experience, the pipe benefits from 18 seamless production lines and 3 perforation production lines, enabling an annual output of 30,000 tons of austenitic and duplex steel pipes. Raw materials are sourced from top-tier Chinese mills (Tingshan, Tisco, Bao Steel, Yongxing, Walsn) and undergo strict MTC (PMI) checks, tensile strength tests, and surface/dimension inspections.
Quality control is comprehensive: dedicated personnel track production flow cards, and pre-shipment inspections include routine appearance testing, PMI testing, non-destructive testing (UT, ET), and physical/chemical property analyses in a professional lab. The factory holds ISO9001:2015 certification and approvals from classification societies like BV, ABS, CCS, DNV/GL, TUV, LR, and KR—supporting third-party inspections for added credibility.
Nickel 201 is the low-carbon version of Nickel 200.
Because of its low carbon content, Nickel 201 is not subject to embrittlement by intergranularly precipitated carbon or graphite when exposed to temperatures of 315 to 760℃ for prolonged time if carbonaceous materials are not in contact with it.
However it does suffer from intergranular embrittlement by sulfur compounds at temperatures above 315℃.
Sodium peroxide can be used to change them to sulfates to counteract their effect.
APPLICATIONS
Electronic components, caustic evaporators, combustion boats and plater bars.
This seamless pipe is a trusted choice for electronic components (relying on its purity and stability), caustic evaporators (resisting corrosive alkaline solutions), combustion boats (withstanding high temperatures), and plater bars (ensuring uniform current distribution). Its resistance to high temperatures and corrosion also makes it suitable for chemical processing equipment, heat exchangers, and other critical systems requiring long-term reliability.
In electronics manufacturing, it serves as conductive and structural components due to its low impurity content. In chemical plants, it handles caustic soda evaporation processes without degradation. For heat treatment applications, combustion boats made from this alloy maintain structural integrity at extreme temperatures, supporting consistent production quality.
Our pipe factory has 296 employees ,including 4 senior engineers,18 engineers and 38 professional technicians.
We can produces 30,000tons of austenitic steel and duplex steel pipes annually with 18 seamless production lines and 3 perforation production lines.
Our pipe factory has been certified to the ISO9001:2015 quality management system and certified by various classification societies (such as BV, ABS,CCS,DNV/GL,TUV,LR,KR etc).
Chemical Composition | |||||||
% | Ni | Fe | C | Mn | Si | S | Cu |
MIN | 99.00 | ||||||
MAX | 0.40 | 0.02 | 0.35 | 0.35 | 0.01 | 0.25 | |
Specification | Physical Properties | ||||
Seamless pipe and tube | ASTM B 161, B 829 | DENSITY | 8.89g/cm3 | MELTING RANGE | 1435-1446℃ |
Specifications Of UNS N02201/DIN W. NR. 2.4061, 2.4068 Seamless Pipe |
OD: 1mm-325mm
WALL THICKNESS: 0.2mm-20mm
Max Length:12m (Special specifications are available as required)
Production Processes |
Quality Control Of Huashang Duplex Steel Seamless Pipe |
1. Raw Materials
Our raw materials come from well-know mills in China, such as Tingshan, Tisco, Bao Steel, Yongxing, Walsn.....
We will do MTC checking (PMI), tensile strength test, surface/dimension inspection for raw material.
2. Production
Specially assigned person shall follow up and check the process flow card and finally keep the copy.
3. Before Shipment
Our quality inspection team responsible for different categories of products. We will conduct routine appearance testing, PMI testing, non-destructive testing. We also equipped with a professional lab that can do physical and chemical properties test. we also can accept the third inspection, such as BV, LR, TUV, ABS, DNV-GL ect.
METALLOGRAPHIC TEST
IMPACT TEST
TENSILE TEST
EDDY CURRENT TESTING
ULTRASONIC TESTING
HARDNESS TEST
TEST BLOCK MEASUREMENT SIZE
MEASURE AFTER PULLING
PULL UP TEST BLOCK
Packaging and Containerization |
Certificate |
Quality management system certificate
Occupational health and safety management system certification
Environmental management system certificate
CCS certificate
TUV-PED certificate
It performs reliably at 315-760℃ when not in contact with carbonaceous materials. Above 315℃, sulfur compounds may cause embrittlement, but this can be addressed with sodium peroxide treatment. It also withstands cryogenic temperatures without losing toughness.
Yes, the pipe is fully customizable. Beyond standard OD (1-325mm), wall thickness (0.2-20mm), and length (up to 12m), special dimensions and surface treatments (e.g., polishing, pickling) are available to meet unique application needs.
The pipe is produced under a ISO9001:2015-certified quality management system and approved by global classification societies including BV, ABS, CCS, DNV/GL, TUV, LR, and KR. Third-party inspection services are also available upon request.
UNS N02201/DIN W. NR. 2.4061, 2.4068 Seamless Pipe is a premium nickel-based seamless tube engineered as the low-carbon variant of Nickel 200. This design optimization eliminates intergranular embrittlement caused by carbon or graphite precipitation when exposed to 315-760℃ for extended periods (provided no contact with carbonaceous materials). Crafted for industrial reliability, the pipe adheres to international standards including ASTM B 161 and B 829, ensuring consistent performance across critical applications.
Key specifications are rigorously controlled: outer diameter (OD) ranges from 1mm to 325mm, wall thickness from 0.2mm to 20mm, and maximum length up to 12m (with custom lengths available upon request). Its physical properties stand out with a density of 8.89g/cm³ and a melting range of 1435-1446℃, making it suitable for high-temperature environments. The chemical composition is precisely calibrated: Ni content ≥99.00% (minimum), with trace elements limited to Fe ≤0.40%, C ≤0.02%, Mn ≤0.35%, Si ≤0.35%, S ≤0.01%, and Cu ≤0.25% (maximum), ensuring exceptional purity and corrosion resistance.
The low-carbon formulation (≤0.02%) is the core advantage, preventing embrittlement in high-temperature scenarios. While sulfur compounds can cause intergranular embrittlement above 315℃, this issue is mitigated by converting sulfates with sodium peroxide—enhancing operational flexibility. The high nickel content (≥99.00%) delivers superior resistance to corrosive media, outperforming standard alloys in harsh industrial settings.
Manufactured by a facility with 30 years of seamless pipe production experience, the pipe benefits from 18 seamless production lines and 3 perforation production lines, enabling an annual output of 30,000 tons of austenitic and duplex steel pipes. Raw materials are sourced from top-tier Chinese mills (Tingshan, Tisco, Bao Steel, Yongxing, Walsn) and undergo strict MTC (PMI) checks, tensile strength tests, and surface/dimension inspections.
Quality control is comprehensive: dedicated personnel track production flow cards, and pre-shipment inspections include routine appearance testing, PMI testing, non-destructive testing (UT, ET), and physical/chemical property analyses in a professional lab. The factory holds ISO9001:2015 certification and approvals from classification societies like BV, ABS, CCS, DNV/GL, TUV, LR, and KR—supporting third-party inspections for added credibility.
Nickel 201 is the low-carbon version of Nickel 200.
Because of its low carbon content, Nickel 201 is not subject to embrittlement by intergranularly precipitated carbon or graphite when exposed to temperatures of 315 to 760℃ for prolonged time if carbonaceous materials are not in contact with it.
However it does suffer from intergranular embrittlement by sulfur compounds at temperatures above 315℃.
Sodium peroxide can be used to change them to sulfates to counteract their effect.
APPLICATIONS
Electronic components, caustic evaporators, combustion boats and plater bars.
This seamless pipe is a trusted choice for electronic components (relying on its purity and stability), caustic evaporators (resisting corrosive alkaline solutions), combustion boats (withstanding high temperatures), and plater bars (ensuring uniform current distribution). Its resistance to high temperatures and corrosion also makes it suitable for chemical processing equipment, heat exchangers, and other critical systems requiring long-term reliability.
In electronics manufacturing, it serves as conductive and structural components due to its low impurity content. In chemical plants, it handles caustic soda evaporation processes without degradation. For heat treatment applications, combustion boats made from this alloy maintain structural integrity at extreme temperatures, supporting consistent production quality.
Our pipe factory has 296 employees ,including 4 senior engineers,18 engineers and 38 professional technicians.
We can produces 30,000tons of austenitic steel and duplex steel pipes annually with 18 seamless production lines and 3 perforation production lines.
Our pipe factory has been certified to the ISO9001:2015 quality management system and certified by various classification societies (such as BV, ABS,CCS,DNV/GL,TUV,LR,KR etc).
Chemical Composition | |||||||
% | Ni | Fe | C | Mn | Si | S | Cu |
MIN | 99.00 | ||||||
MAX | 0.40 | 0.02 | 0.35 | 0.35 | 0.01 | 0.25 | |
Specification | Physical Properties | ||||
Seamless pipe and tube | ASTM B 161, B 829 | DENSITY | 8.89g/cm3 | MELTING RANGE | 1435-1446℃ |
Specifications Of UNS N02201/DIN W. NR. 2.4061, 2.4068 Seamless Pipe |
OD: 1mm-325mm
WALL THICKNESS: 0.2mm-20mm
Max Length:12m (Special specifications are available as required)
Production Processes |
Quality Control Of Huashang Duplex Steel Seamless Pipe |
1. Raw Materials
Our raw materials come from well-know mills in China, such as Tingshan, Tisco, Bao Steel, Yongxing, Walsn.....
We will do MTC checking (PMI), tensile strength test, surface/dimension inspection for raw material.
2. Production
Specially assigned person shall follow up and check the process flow card and finally keep the copy.
3. Before Shipment
Our quality inspection team responsible for different categories of products. We will conduct routine appearance testing, PMI testing, non-destructive testing. We also equipped with a professional lab that can do physical and chemical properties test. we also can accept the third inspection, such as BV, LR, TUV, ABS, DNV-GL ect.
METALLOGRAPHIC TEST
IMPACT TEST
TENSILE TEST
EDDY CURRENT TESTING
ULTRASONIC TESTING
HARDNESS TEST
TEST BLOCK MEASUREMENT SIZE
MEASURE AFTER PULLING
PULL UP TEST BLOCK
Packaging and Containerization |
Certificate |
Quality management system certificate
Occupational health and safety management system certification
Environmental management system certificate
CCS certificate
TUV-PED certificate
It performs reliably at 315-760℃ when not in contact with carbonaceous materials. Above 315℃, sulfur compounds may cause embrittlement, but this can be addressed with sodium peroxide treatment. It also withstands cryogenic temperatures without losing toughness.
Yes, the pipe is fully customizable. Beyond standard OD (1-325mm), wall thickness (0.2-20mm), and length (up to 12m), special dimensions and surface treatments (e.g., polishing, pickling) are available to meet unique application needs.
The pipe is produced under a ISO9001:2015-certified quality management system and approved by global classification societies including BV, ABS, CCS, DNV/GL, TUV, LR, and KR. Third-party inspection services are also available upon request.
