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The UNS N10675/DIN W.NR. 2.4600 Seamless Pipe is a robust solution engineered for high-pressure, high-temperature oil and gas applications, offering superior resistance to sour gas and stress corrosion. Composed of nickel-molybdenum alloy, this pipe ensures reliability in harsh downhole and refinery environments, critical for upstream and downstream operations.
Material Composition:
Ni (65% min), Mo (26-30%), Fe (1.0-3.0%), with low carbon (0.15% max) and silicon (0.15% max), providing excellent resistance to H₂S-induced sulfide stress corrosion (SSC) and hydrogen embrittlement.
Mechanical properties: Tensile strength ≥700 MPa (quenched and tempered), yield strength ≥350 MPa, elongation ≥30%, with high impact resistance (Charpy V-notch ≥40J at -20°C).
Environmental Resistance:
Sour gas resistance: Compliant with NACE MR0175 (ISO 15156-3) for H₂S ≤10,000ppm and CO₂ ≤20%, suitable for deepwater oil wells (depth ≥3000m).
High-temperature strength: Maintains 80% of room temperature strength at 500°C, ideal for refinery pipelines transporting hot hydrocarbons (300-500°C).
Manufacturing Excellence:
Seamless hot-rolled process with quenching and tempering (ASTM B622, ASME SB-622), OD 25-610mm, wall thickness 3-60mm, with HIC testing (NACE TM0284, Level A).
Threading options: API 5B threads (NPT, BTC) and premium connections (Hydril, Tenaris), ensuring gas-tight seals in high-pressure applications (≤1500 bar).
Upstream Oil & Gas: Used for downhole tubing and casing in sour gas wells, reducing failure rates from SSC by 70% compared to carbon steel.
Refinery Pipelines: Transports high-temperature hydrogen (H₂ ≤50 bar, 450°C) and cracked gases in hydrocracking units, resisting hydrogen attack and temper embrittlement.
Chemical Tankers: Supports cargo lines for corrosive liquids (e.g., methanol, ethylene glycol), compliant with IMO MSC.307(88) for marine applications.
Geothermal Energy: Used in high-salinity geothermal wells (Cl⁻ ≤50,000ppm, 250°C), enduring scale formation and acid gases (CO₂/H₂S).
Sour Gas Expertise: NACE MR0175 compliance and HIC testing ensure suitability for the most severe sour environments, backed by 10,000-hour field data.
Premium Connections: In-house threading and coating capabilities (e.g., PTFE, fusion-bonded epoxy), reducing onsite assembly time by 40%.
Rigorous Testing: 100% hardness testing (Rockwell B ≤95) and chemical analysis (ICP-OES), ensuring material consistency across large project batches.
Logistics Support: Dedicated marine packaging (ISO 1462) for offshore deliveries, with 24/7 tracking for critical oil and gas project timelines.
Specification | Physical Properties | ||||
Seamless pipe and tube | ASTM B 622 | DENSITY | 9.22 g/cm3 | MELTING RANGE | 1370-1418℃ |
Specifications Of UNS N10675/DIN W. NR. 2.4600 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
The UNS N10675/DIN W.NR. 2.4600 Seamless Pipe is a robust solution engineered for high-pressure, high-temperature oil and gas applications, offering superior resistance to sour gas and stress corrosion. Composed of nickel-molybdenum alloy, this pipe ensures reliability in harsh downhole and refinery environments, critical for upstream and downstream operations.
Material Composition:
Ni (65% min), Mo (26-30%), Fe (1.0-3.0%), with low carbon (0.15% max) and silicon (0.15% max), providing excellent resistance to H₂S-induced sulfide stress corrosion (SSC) and hydrogen embrittlement.
Mechanical properties: Tensile strength ≥700 MPa (quenched and tempered), yield strength ≥350 MPa, elongation ≥30%, with high impact resistance (Charpy V-notch ≥40J at -20°C).
Environmental Resistance:
Sour gas resistance: Compliant with NACE MR0175 (ISO 15156-3) for H₂S ≤10,000ppm and CO₂ ≤20%, suitable for deepwater oil wells (depth ≥3000m).
High-temperature strength: Maintains 80% of room temperature strength at 500°C, ideal for refinery pipelines transporting hot hydrocarbons (300-500°C).
Manufacturing Excellence:
Seamless hot-rolled process with quenching and tempering (ASTM B622, ASME SB-622), OD 25-610mm, wall thickness 3-60mm, with HIC testing (NACE TM0284, Level A).
Threading options: API 5B threads (NPT, BTC) and premium connections (Hydril, Tenaris), ensuring gas-tight seals in high-pressure applications (≤1500 bar).
Upstream Oil & Gas: Used for downhole tubing and casing in sour gas wells, reducing failure rates from SSC by 70% compared to carbon steel.
Refinery Pipelines: Transports high-temperature hydrogen (H₂ ≤50 bar, 450°C) and cracked gases in hydrocracking units, resisting hydrogen attack and temper embrittlement.
Chemical Tankers: Supports cargo lines for corrosive liquids (e.g., methanol, ethylene glycol), compliant with IMO MSC.307(88) for marine applications.
Geothermal Energy: Used in high-salinity geothermal wells (Cl⁻ ≤50,000ppm, 250°C), enduring scale formation and acid gases (CO₂/H₂S).
Sour Gas Expertise: NACE MR0175 compliance and HIC testing ensure suitability for the most severe sour environments, backed by 10,000-hour field data.
Premium Connections: In-house threading and coating capabilities (e.g., PTFE, fusion-bonded epoxy), reducing onsite assembly time by 40%.
Rigorous Testing: 100% hardness testing (Rockwell B ≤95) and chemical analysis (ICP-OES), ensuring material consistency across large project batches.
Logistics Support: Dedicated marine packaging (ISO 1462) for offshore deliveries, with 24/7 tracking for critical oil and gas project timelines.
Specification | Physical Properties | ||||
Seamless pipe and tube | ASTM B 622 | DENSITY | 9.22 g/cm3 | MELTING RANGE | 1370-1418℃ |
Specifications Of UNS N10675/DIN W. NR. 2.4600 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
