Carbon Steel A105 Flanges

Precision Engineering for High-Stress Environments

Carbon Steel A105 Flanges are forged to withstand extreme pressures and temperatures while maintaining structural integrity. Nakoda’s flanges address critical challenges such as:

• Thermal Cycling: Resilient under repeated heating and cooling.
• Corrosion Resistance: Optimized for mildly corrosive environments.
• Machinability: Balanced hardness for efficient machining without compromising durability.

Comprehensive Range of Carbon Steel A105 Flanges

We manufacture a diverse range of flanges to meet global industrial standards:

1. ASTM A105 Carbon Steel Slip-On Flanges

• Design: Ideal for low to moderate pressure systems.
• Material: Contains minimal alloying elements, relying on thermal treatment for enhanced properties.

2. ASME SA105 Carbon Steel Threaded Flanges

• Application: Suitable for sodium hydroxide environments but requires caution in chloride-rich media (e.g., sodium hypochlorite).
• Installation: Higher forming forces needed for cylinder bending applications.

3. ASTM A105 Carbon Steel Socket Weld Flanges

• Heat Treatment: Water or air quenching post-heat treatment ensures stress relief and solution tempering.

4. ASME SA105 Carbon Steel Weld Neck Flanges

• High-Temperature Use: Specialized annealing at 500°C–550°C for unique applications.

5. ASTM A105 Carbon Steel Blind Flanges

• Function: Seals piping systems but limited in stress corrosion cracking resistance.

Additional Types:

• ASME SA105 Lap Joint Flanges
• ASTM A105 Ring Type Joint Flanges
• Carbon Steel A105 Nippo Flanges
• Carbon Steel A105 Screwed Flanges

Technical Specifications & Standards

Our flanges adhere to ASTM A105, ASME SA105, ANSI, DIN, EN, and BS standards, ensuring global compatibility.

Key Specifications:

• Size Range: ½″ (15 NB) to 48″ (1200 NB)
• Pressure Ratings: 150# to 2500#, PN6 to PN64
• Flange Face Types: Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
• Material Grades: ASTM A105, A105N

Heat Treatment & Machining Properties

Heat Treatment Process:

1. Solution Annealing: Conducted at 500°C–550°C for stress relief.
2. Quenching: Rapid cooling in water or air post-treatment to enhance mechanical properties.

Machinability:

• General Rule: ASME SA105 Lap Joint Flanges are harder to machine than standard austenitic steels due to higher hardness.
• Exception: ASTM A105 Ring Type Joint Flanges exhibit excellent machining characteristics despite alloy constraints.

Applications Across Industries

Nakoda’s Carbon Steel A105 Flanges are integral to:

1. Oil & Gas:
   • Weld Neck Flanges for high-pressure pipelines.
   • Blind Flanges for sealing refinery systems.
2. Chemical Processing:
   • Threaded Flanges for alkaline solutions (with chloride precautions).
3. Power Plants:
   • Socket Weld Flanges for steam and coolant lines.
4. Water Treatment:
   • Slip-On Flanges for modular pipe networks.

Rigorous Quality Assurance

Every flange undergoes stringent testing to meet global certifications:

Testing & Certifications:

• EN 10204/3.1B Certification
• NACE MR 01075 Compliance (for sour service environments)
• Third-Party Inspections: SGS, TÜV, BV
• Material Tests:
  • Mechanical: Tensile strength, hardness, flattening, and flaring tests.
  • Chemical: Spectro analysis and PMI (Positive Material Identification).
  • Corrosion Resistance: Pitting resistance and intergranular corrosion (IGC) tests.

Why Choose Nakoda Steel Industry?

1. US-Based Manufacturing:
   • Streamlined logistics and rapid delivery across the United States.
2. Global Compliance:
   • ASTM A105 and ASME SA105 standards for universal compatibility.
3. Custom Solutions:
   • Tailored dimensions, pressure ratings, and surface finishes.
4. Proven Durability:
   • Flanges engineered to resist thermal fatigue and stress corrosion.

Sustainable & Cost-Effective Solutions

Our flanges reduce lifecycle costs through:

• Low Maintenance: Resistant to wear and environmental stressors.
• Recyclability: Eco-friendly material supporting green manufacturing.
• Longevity: Outperform standard steels in harsh conditions.

Partner with a US Leader

As a premier Carbon Steel A105 Flanges Manufacturer in the US, Nakoda Steel Industry combines cutting-edge metallurgy with decades of expertise. From Slip-On Flanges for water systems to robust Weld Neck Flanges for offshore rigs, we deliver precision, compliance, and reliability.