ASTM B423 Seamless Pipes are nickel-iron-chromium alloys pipes that are made of mainly UNS N08825 (Alloy 825). These pipes have a unique set of applications that require a high level of corrosion resistance, high temperature stability as well as the long term mechanical reliability. Manufactured in a continuous production process, ASTM B423 pipes are characterized by uniformity in wall thickness, homogeneity in grain structure as well as excellence in resistance against internal pressure and mechanical stress. The steel does not have any welded joints and this means that these pipes are highly structurally sound and do not pose risks to collapse in vital systems.
ASTM B423 Seamless Pipes are resistant to abrasion, acids, chlorides, and severe temperatures, and are mostly used in industries where constant exposure to aggressive acid, chlorides, and high temperatures are the norm. Being the leading ASTM B423 Seamless Pipes Manufacturers in Bangalore, India , we are able to supply the pipes meeting the ASTM B423 / ASME SB423 standards to ensure compliance with international quality, safety and performance standards.
Top ASTM B423 Seamless Pipe Suppliers in Bangalore, India
Shubham Metals is a trusted name among ASTM B423 Seamless Pipe Suppliers in Bangalore, India and it supplies Alloy 825 pipes to the industries that need corrosion-resistant and pressure-equalizing piping systems.
We have a supply chain that is based on:
- Qualified and accredited manufacturers.
- Stringent quality control measures.
- Complete documentation and traceability.
- Dimensional and chemical compliance according to ASTM standards.
We distribute EPC contractors, refineries, and offshore service provider companies in Bangalore, India . We do this through flexible order quantities and planning of supplies based on the project so that we are able to deliver at the right time even in the tightest project schedules.
Understanding ASTM B423 Seamless Pipe Specification
ASTM B423 is a standard specification which encompasses seamless nickel-iron-chromium-molybdenum-copper alloy pipes which are supposed to be used in extremely corrosive service environments.
The specification ensures:
- Reserved chemical composition.
- Specified mechanical strength specifications.
- Stringent dimensional requirements.
- Non-destructive testing is required to be conducted.
ASTM B423 pipes come in the solution annealed state. This heat treatment increases the resistance of corrosion, restores the ductility and provides microstructural stability.
The seamless nature of these pipes also removes these kinds of risks that are found in welded joints which include corrosion of the heat-affected zone, weld cracks, and mechanical variability. This renders them suitable in high pressure and chemically hostile conditions that require safety and reliability.
ASTM B423 Seamless Pipe Grade and Material Classification
ASTM B423 Seamless Pipes are mostly available in:
|
ASTM B423 Grade |
UNS Number |
Common Trade Name |
|
ASTM B423 Alloy 825 |
UNS N08825 |
Incoloy 825 |
Alloy 825 is titanium-stabilized, and this prevents intergranular corrosion when welding or exposed to high temperatures.
The important alloying components offer certain advantages:
- Nickel enhances the resistance to chloride stress corrosion cracking.
- Chromium increases oxidizing acid resistance.
- Molybdenum enhances pitting and crevice corrosion resistance.
- Copper enhances insensitivity to sulfuric and phosphoric acid.
- Sensitization is prevented by titanium.
This moderate ratio constitutes that ASTM B423 pipes can be used in areas where stainless steels can fail.
Key Characteristics and Performance Advantages
ASTM B423 Seamless Pipes offer the following benefits in service environments that are challenging:
- Very high sulfuric, phosphoric and nitric acid resistance.
- High-level chloride induced stress corrosion cracking resistance.
- Pitting and Crevice corrosion Highly resistant corrosion.
- Constant mechanical properties under high temperatures.
- Smooth production to improve the pressure management.
- Good fabrication and good weldability.
- Prolonged service with lower maintenance expenses.
Alloy 825 is a good choice of piping materials in critical process piping systems because of these properties.
ASTM B423 Seamless Pipe Technical Specifications
ASTM B423 Seamless Pipes has a large variety of sizes and configurations.
|
Specification |
Details |
|
Standard |
ASTM B423 / ASME SB423 |
|
Manufacturing Process |
Seamless |
|
Outside Diameter |
As per ASTM standards and project requirement |
|
Wall Thickness |
SCH 10 to SCH XXS or custom |
|
Length |
Random, Double Random, Cut Length |
|
End Finish |
Plain End, Beveled End |
|
Surface Finish |
Annealed, Pickled, Polished |
|
Testing |
Hydrostatic, Eddy Current, PMI, Mechanical & Chemical Tests |
Customization is available to meet specific project demands.
Typical Chemical Composition – Alloy 825 (UNS N08825)
|
Element |
Percentage (%) |
|
Nickel (Ni) |
38.0 – 46.0 |
|
Chromium (Cr) |
19.5 – 23.5 |
|
Molybdenum (Mo) |
2.5 – 3.5 |
|
Copper (Cu) |
1.5 – 3.0 |
|
Titanium (Ti) |
0.6 – 1.2 |
|
Carbon (C) |
≤ 0.05 |
|
Iron (Fe) |
Balance |
The amount of carbon that is low inhibits the formation of carbides, and the use of titanium stabilization improves the resistance to grain boundary corrosion.
Mechanical Properties
ASTM B423 Alloy 825 Seamless Pipes offer a good balance of the strength and ductile properties.
Typical mechanical properties:
- Minimum Tensile Strength: ~585 MPa
- Minimum Yield Strength: ~240 MPa
- Minimum Elongation: ~30%
These properties ensure:
- Resistance to cracking during fabrication
- Stability under pressure and temperature fluctuations
- Reliable performance in corrosive and high-stress conditions
Industrial Applications of ASTM B423 Seamless Pipes
ASTM B423 Seamless Pipes are used in those industries where corrosion failure may cause significant safety and operational problems.
Typical applications include:
- Petroleum and petroleum products systems.
- Submarine pipelines and platforms.
- Petrochemical and chemical plants.
- Acid manufacturing units
- Heat exchanger and condensers.
- Marine engineering systems
- Air pollution control apparatus.
- Nuclear fuel reprocessing plants.
- Desalination plants
They have a wide range of corrosion resistance, which makes them suitable in onshore and offshore installations.
Quality Control and Testing
Nickel alloy piping systems are very sensitive to quality assurance. ASTM B423 Seamless Pipes are thoroughly tested and these include:
- Chemical composition analysis.
- Mechanical testing
- Hydrostatic pressure test.
- Nondestructive electric tests or Eddy current.
- Enhanced Material Testing (PMI)
- Graphical and dimensional analysis.
All the materials are provided along with Mill Test Certificates (MTC) and full traceability records.
ASTM B423 Seamless Pipe Exporters in Bangalore, India
Shubham metals is a reputable ASTM B423 Seamless Pipe Exporters in Bangalore, India and provides Alloy 825 pipes in the world market with full export documentation and safe packaging.
Our export services include:
- Third party inspection support.
- Expatriate compliance paperwork.
- Labeling and anti-corrosive packaging.
- Timely logistics organization.
Our customers are in the Middle East, Europe, Southeast Asia and Africa.
Why Choose Shubham Metals for ASTM B423 Seamless Pipes?
The right selection of the supplier is the way to guarantee the performance and reliability of the project.
Shubham Metals offers:
- Certified pipes ASTM B423.
- Complete tracing and records.
- Competitive pricing
- Ready stock availability
- Technical consultation
- On-time delivery
It is why our customers (both domestic and international) choose us as a partner in sourcing due to our focus on quality, technical expertise, and customer satisfaction.
Get Your ASTM B423 Seamless Pipes Today!
Where you need excellent corrosion resistance, high strength and longevity of service under severe chemical exposure, the right solution would be ASTM B423 Seamless Pipes (Alloy 825). Proceed with the order to Shubham Metals to receive an individual quote, technical support, and delivery within the desired time to meet the project specifications.
Technical Specifications
| ASTM B423 – Technical Specifications | |
|---|---|
| Specification | ASTM B423 |
| Covered Grades | N08825 |
| Size Range | 1/8" NB to 30" NB (3 mm to 750 mm OD) |
| Schedule | SCH 5S, 10S, 20, 40, 40S, 80, 80S, 160, XXS |
| Wall Thickness | 0.5 mm to 80 mm |
| Length | Single Random, Double Random, Cut to Size |
| Form | Seamless / Welded / ERW / EFW / Fabricated |
| End Finish | Plain End, Bevelled End, Threaded End |
| Specifications | ASTM / ASME / DIN / EN / JIS |
| Surface Finish | Pickled, Annealed, Polished, BA, 2B, No.4 |
| Testing | Hydrostatic, Eddy Current, IGC, PMI, Hardness, Ultrasonic |
| Certification | EN 10204 3.1 / 3.2 Mill Test Certificate |
