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UNS NO6455/DIN W. NR. 2.4610 SEAMLESS PIPE
7304419000
UNS NO6455/DIN W. NR. 2.4610 Seamless Pipe is a high-precision, bright-surface thick-wall tube engineered for high-temperature and high-pressure applications. Distinguished by its restricted carbon content (0.05-0.10%) and elevated annealing temperature (1149-1177℃), this alloy outperforms N08800 in stress rupture and creep properties—making it ideal for demanding industrial environments.
Available with inner diameters (ID) of 4.4mm and 5.4mm (custom IDs available), the pipe adheres to ASTM B 622 standards. Key specifications include OD from 1mm to 325mm, wall thickness from 0.2mm to 20mm, and maximum length up to 12m. Its physical properties feature a density of 8.64g/cm³ and a melting range of 1350-1380℃. The chemical composition is meticulously controlled: Ni (balance), Cr 14.00-18.00%, Mo 14.00-17.00%, Fe ≤3.00%, Co ≤2.00%, C ≤0.02%, Mn ≤1.00%, Si ≤0.08%, P ≤0.04%, S ≤0.03%, and Ti ≤0.70%—ensuring exceptional high-temperature performance.
As a bright-surface thick-wall pipe, it boasts tight dimensional tolerances and a smooth, polished surface—eliminating the need for additional finishing. This precision makes it suitable for applications requiring leak-proof seals and uniform fluid flow, such as high-pressure piping systems.
The elevated annealing temperature (1149-1177℃) and optimized carbon content enhance stress rupture and creep resistance, allowing reliable operation at extreme temperatures. It maintains structural integrity in long-term high-heat environments, outperforming standard alloys like N08800.
Manufactured by a facility with 30 years of expertise, the pipe is produced via cold drawing and cold rolling processes—ensuring consistent wall thickness and surface finish. The factory operates 18 seamless production lines and 3 perforation production lines, with an annual capacity of 30,000 tons of austenitic steel, duplex steel, and nickel alloy pipes.
Quality control is rigorous: raw materials from top mills (Tingshan, Tisco, Bao Steel) undergo MTC (PMI) checks, tensile strength tests, and surface/dimension inspections. Production is tracked via process flow cards, and pre-shipment inspections include non-destructive testing (UT, ET), metallographic testing, impact testing, and tensile testing. The factory holds ISO9001:2015 certification and approvals from BV, ABS, CCS, DNV/GL, TUV, and LR.
N08810 has a restricted carbon content range of 0.05 to 0.10%, which is in the upper portion of that of N08800,
and is annealed at 1149 to 1177℃ (N08800 is annealed at 983 to 1038℃).
These differences impart it to have higher stress rupture and creep properties than N08800.
APPLICATIONS
Chemical and petrochemical process piping, high temperature heat exchangers, furnace components,
carburizing equipment, heating-element sheathing, and nuclear power steam superheating tubing.
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 and nickel alloy 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)
SPECIFICATIONS OFUNS NO6455/DIN W. NR. 2.4610 SEAMLESS PIPE
OD: 1mm-325mm
WALL THICKNESS ：0.2mm-20mm
Length : 12m (Special specifications are available as required)
SPECIFICATIONS | PHYSICAL PROPERTIES | ||||
Seamless pipe and tube | ASTM B 622 | DENSITY | 8.64g/cm 3 | MELTING | 1350-1380℃ |
CHEMICAL COMPOSITION | |||||||||||
% | Ni | Cr | Mo | Fe | Co | C | Mn | Si | P | S | Ti |
MIN | BALANCE | 14.00 | 14.00 | ||||||||
MAX | 18.00 | 17.00 | 3.00 | 2.00 | 0.02 | 1.00 | 0.08 | 0.04 | 0.03 | 0.70 | |
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).
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 |
The high-precision design ensures OD tolerance of ±0.05mm and wall thickness tolerance of ±0.02mm—meeting the strict requirements of high-pressure and leak-sensitive applications. Custom tolerance ranges are available for specialized needs.
Yes, beyond standard length (12m), custom lengths are available. Surface treatments include polishing, bright annealing, and acid pickling—tailored to application requirements (e.g., hygiene-focused food processing, corrosion-resistant chemical environments).
Yes, the pipe is available in stock with ID 4.4mm and 5.4mm, and standard OD/wall thickness combinations. Stock quantity exceeds 10,000,000 units—enabling quick delivery for urgent orders. Custom specifications have lead times based on production schedules.
UNS NO6455/DIN W. NR. 2.4610 Seamless Pipe is a high-precision, bright-surface thick-wall tube engineered for high-temperature and high-pressure applications. Distinguished by its restricted carbon content (0.05-0.10%) and elevated annealing temperature (1149-1177℃), this alloy outperforms N08800 in stress rupture and creep properties—making it ideal for demanding industrial environments.
Available with inner diameters (ID) of 4.4mm and 5.4mm (custom IDs available), the pipe adheres to ASTM B 622 standards. Key specifications include OD from 1mm to 325mm, wall thickness from 0.2mm to 20mm, and maximum length up to 12m. Its physical properties feature a density of 8.64g/cm³ and a melting range of 1350-1380℃. The chemical composition is meticulously controlled: Ni (balance), Cr 14.00-18.00%, Mo 14.00-17.00%, Fe ≤3.00%, Co ≤2.00%, C ≤0.02%, Mn ≤1.00%, Si ≤0.08%, P ≤0.04%, S ≤0.03%, and Ti ≤0.70%—ensuring exceptional high-temperature performance.
As a bright-surface thick-wall pipe, it boasts tight dimensional tolerances and a smooth, polished surface—eliminating the need for additional finishing. This precision makes it suitable for applications requiring leak-proof seals and uniform fluid flow, such as high-pressure piping systems.
The elevated annealing temperature (1149-1177℃) and optimized carbon content enhance stress rupture and creep resistance, allowing reliable operation at extreme temperatures. It maintains structural integrity in long-term high-heat environments, outperforming standard alloys like N08800.
Manufactured by a facility with 30 years of expertise, the pipe is produced via cold drawing and cold rolling processes—ensuring consistent wall thickness and surface finish. The factory operates 18 seamless production lines and 3 perforation production lines, with an annual capacity of 30,000 tons of austenitic steel, duplex steel, and nickel alloy pipes.
Quality control is rigorous: raw materials from top mills (Tingshan, Tisco, Bao Steel) undergo MTC (PMI) checks, tensile strength tests, and surface/dimension inspections. Production is tracked via process flow cards, and pre-shipment inspections include non-destructive testing (UT, ET), metallographic testing, impact testing, and tensile testing. The factory holds ISO9001:2015 certification and approvals from BV, ABS, CCS, DNV/GL, TUV, and LR.
N08810 has a restricted carbon content range of 0.05 to 0.10%, which is in the upper portion of that of N08800,
and is annealed at 1149 to 1177℃ (N08800 is annealed at 983 to 1038℃).
These differences impart it to have higher stress rupture and creep properties than N08800.
APPLICATIONS
Chemical and petrochemical process piping, high temperature heat exchangers, furnace components,
carburizing equipment, heating-element sheathing, and nuclear power steam superheating tubing.
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 and nickel alloy 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)
SPECIFICATIONS OFUNS NO6455/DIN W. NR. 2.4610 SEAMLESS PIPE
OD: 1mm-325mm
WALL THICKNESS ：0.2mm-20mm
Length : 12m (Special specifications are available as required)
SPECIFICATIONS | PHYSICAL PROPERTIES | ||||
Seamless pipe and tube | ASTM B 622 | DENSITY | 8.64g/cm 3 | MELTING | 1350-1380℃ |
CHEMICAL COMPOSITION | |||||||||||
% | Ni | Cr | Mo | Fe | Co | C | Mn | Si | P | S | Ti |
MIN | BALANCE | 14.00 | 14.00 | ||||||||
MAX | 18.00 | 17.00 | 3.00 | 2.00 | 0.02 | 1.00 | 0.08 | 0.04 | 0.03 | 0.70 | |
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).
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 |
The high-precision design ensures OD tolerance of ±0.05mm and wall thickness tolerance of ±0.02mm—meeting the strict requirements of high-pressure and leak-sensitive applications. Custom tolerance ranges are available for specialized needs.
Yes, beyond standard length (12m), custom lengths are available. Surface treatments include polishing, bright annealing, and acid pickling—tailored to application requirements (e.g., hygiene-focused food processing, corrosion-resistant chemical environments).
Yes, the pipe is available in stock with ID 4.4mm and 5.4mm, and standard OD/wall thickness combinations. Stock quantity exceeds 10,000,000 units—enabling quick delivery for urgent orders. Custom specifications have lead times based on production schedules.
