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Manufacturer,Stockist and Exporter of Carbon Steel A105 Blind Flange
Carbon Steel A105 Blind Flange
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Manufacturer,Stockist and Exporter of Carbon Steel A105 Blind Flange

Carbon Steel A105 Blind Flange, Carbon Steel A105 Blind Flange, A105 Heat Exchanger Flange, ANSI/ASME B16.47 Series B  Blind Flange, a105 blind flange, A105 Marine Flange,Carbon Steel A105 Blind Flange,ANSI B16.47 Series A Blind Flange

Carbon Steel A105 Blind Flange is a widely used forged steel component that plays a crucial role in closing the ends of piping systems. It is manufactured from ASTM A105 grade carbon steel, known for its excellent mechanical properties and ability to withstand high pressure and temperature. These flanges are used in systems where the flow needs to be terminated or isolated temporarily or permanently. With a strong seal, they prevent leaks and ensure system integrity, making them vital in applications across oil & gas, petrochemical, power generation, and water treatment industries.

Raj Bhoomi Engineers is a trusted manufacturer, stockist, and exporter of Carbon Steel A105 Blind Flanges, offering a wide range of sizes, pressure ratings, and face types such as Raised Face (RF), Flat Face (FF), and Ring Type Joint (RTJ). The company produces these flanges using advanced forging techniques and maintains stringent quality control measures to ensure compliance with international standards like ASME B16.5, ANSI, and ASTM A105. Their flanges are appreciated for their durability, dimensional accuracy, and corrosion resistance, even in aggressive industrial environments.

Carbon Steel A105 Blind Flanges

With a robust export network, Raj Bhoomi Engineers supplies Carbon Steel A105 Blind Flanges to numerous global markets including Oman, Qatar, Saudi Arabia, UAE, Kuwait, Spain, Germany, the USA, Canada, and several regions in Africa and worldwide. Their global reach is supported by a large inventory, efficient logistics, and a commitment to timely delivery, enabling them to meet the demands of large-scale industrial projects and EPC contractors.

One of the key strengths of Raj Bhoomi Engineers lies in their ability to customize products based on client specifications. Whether it's a specific pressure class (150 to 2500), face finish, or dimensional requirement, they offer tailored solutions backed by certifications such as ISO 9001:2015, EN 10204 3.1/3.2, and PED compliance. Each Carbon Steel A105 Blind Flange is thoroughly tested for mechanical strength, chemical composition, and pressure performance to ensure the highest quality.

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Specification of Carbon Steel A105 Blind Flange

Specification Item Details
Product Name Carbon Steel A105 Blind Flange
Material Grade ASTM A105 (Forged Carbon Steel)
Standard ASME B16.5, ANSI B16.5, ASTM A105, MSS-SP-44, API 605
Type Blind Flange (BL)
Size Range 1/2" to 48" (DN15 to DN1200)
Pressure Ratings Class 150, 300, 600, 900, 1500, 2500
Face Type Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ)
Connection Type Bolted Flanged Connection
Manufacturing Method Forged
Temperature Range -29°C to 425°C (-20°F to 800°F)
Application Industries Oil & Gas, Petrochemical, Power Generation, Water Treatment, Marine
Corrosion Resistance Moderate (may be improved with coating or lining)
Testing Methods Hydrostatic Test, Ultrasonic Test, PMI, Visual & Dimensional Inspection
Certifications Available ISO 9001:2015, EN 10204 3.1 / 3.2, PED, IBR, NACE MR0175 (if required)
Surface Finish Black Paint, Anti-Rust Coated, or Custom Finish
Origin / Manufacturer Raj Bhoomi Engineers, India


These flanges are widely used to isolate piping systems during maintenance or repair, or at the end of piping runs. Their solid construction and resistance to pressure and corrosion make them a reliable choice in systems transporting steam, oil, gas, water, or chemicals. The A105 grade’s excellent machinability and weldability further contribute to the flange’s versatility in various applications.
Raj Bhoomi Engineers has established a solid reputation in the global market for providing high-quality Carbon Steel A105 Blind Flanges. Their focus on engineering excellence, customer satisfaction, and international quality standards makes them a preferred supplier in both domestic and international markets. Whether it's a refinery in the Middle East or a chemical plant in Europe, industries across the globe rely on Raj Bhoomi Engineers for durable and dependable flange solutions.

Carbon Steel A105 Blind Flange Chemical Properties

Element Composition (%)
Carbon (C) ≤ 0.35
Manganese (Mn) 0.60 – 1.05
Phosphorus (P) ≤ 0.035
Sulfur (S) ≤ 0.040
Silicon (Si) 0.10 – 0.35
Copper (Cu) ≤ 0.40 *
Nickel (Ni) ≤ 0.40 *
Chromium (Cr) ≤ 0.30 *
Molybdenum (Mo) ≤ 0.12 *
Vanadium (V) ≤ 0.08 *


Carbon Steel A105 Blind Flange Mechanical Properties

Property Value
Tensile Strength (min) 485 MPa (70,000 psi)
Yield Strength (min) 250 MPa (36,000 psi)
Elongation (% in 2") 22% minimum
Reduction of Area 30% minimum
Hardness (Brinell, HBW) 187 max (up to 250 HB for small parts)
Impact Toughness Not required unless specified
Test Temperature Room temperature (unless otherwise specified)
Heat Treatment Normalized (for flanges above 4" or for severe service)

Features of Carbon Steel A105 Blind Flange

  • Healthy, non-toxic, and stain-free
  • High temperature and pressure resistance
  • Hot welding connection
  • Leak prevention
  • Excellent heat insulation
  • Lightweight and easy to transport
  • Smooth inner wall for reduced pressure loss
  • Low noise
  • Suitable for exposed or hidden installation
  • Chemical corrosion resistance

Available Types Of Carbon Steel A105 Blind Flange

A105 Pressure Vessel Flange Forged A105 Blind Flange
A105 Flange RTJ A105 RF Blind Flange
CS HEAVY BLRF FLANGE ANSI B16.47 Series A Blind Flange
ANSI B16.47 Series B Blind Flange MSS SP-44 A105 Blind Flange
A105 Schedule 160 Blind Flange ANSI/ASME B16.5 Blind Flange
ANSI/ASME B16.47 Series A(MSS SP44) Blind Flanges ANSI/ASME B16.47 Series B  Blind Flange
carbon steel slip on flanges Custom A105 Blind Flange
A105 Forged Oversized Flange A105 XXS Blind Flange

Applications Industry

  • Pharmaceutical Equipment
  • Chemical Equipment
  • Sea Water Equipment
  • Heat Exchangers
  • Condensers
  • Pulp and Paper Industry
  • Off-Shore Oil Drilling Companies
  • Power Generation
  • Petrochemicals
  • Gas Processing
  • Specialty Chemicals
  • Pharmaceuticals

FAQs – Carbon Steel A105 Blind Flange

1. What is a Carbon Steel A105 Blind Flange used for?

A105 Blind Flange is used to close the ends of pipes, valves, or pressure vessel openings. It allows for easy access to the system for inspection, testing, or maintenance.

2.What are the pressure ratings available for A105 Blind Flanges?

They are manufactured in various pressure classes such as 150#, 300#, 600#, 900#, 1500#, and 2500# as per ASME/ANSI standards.

3. Are Carbon Steel A105 Blind Flanges suitable for high-temperature applications?

Yes, ASTM A105 material is designed for high-temperature and high-pressure applications, making it suitable for steam lines, petrochemical, and power plant piping systems.

4. Can A105 Blind Flanges be customized?

Yes, they can be manufactured in different sizes, facing types (RF, RTJ, FF), and special coatings like galvanized, epoxy-coated, or PTFE-lined as per client requirements.


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Countries we have exported our products to:

Turkey, Thailand, Bulgaria, Serbia, Mexico, Estonia, Trinidad & Tobago,Tunisia, New Zealand, Indonesia, Puerto Rico, Ireland, India, Morocco, Brazil, Lebanon, Hong Kong, Jordan, Ukraine, Switzerland, Czech Republic, Lithuania, Sri Lanka, Greece, Taiwan, Zimbabwe, Algeria, Romania, Mexico, Ghana, Italy, Philippines, Spain, United Kingdom, Finland, Azerbaijan, Japan, Macau, Israel, Saudi Arabia, Kenya, Bhutan, Poland, Poland, Costa Rica, Kuwait, Singapore, Pakistan, France, Colombia, Tibet, Bolivia, Portugal, Iraq, Australia, Kazakhstan, Nepal, Mongolia, Gambia, Malaysia, Chile, Germany, Slovakia, China, Bahrain, Denmark, Angola, Afghanistan, Peru, Austria, Ecuador, Gabon, Croatia, South Africa, Sweden, Chile, Hungary, United Arab Emirates, Argentina, Bangladesh, Oman, Egypt, United States, Belgium, Canada, Namibia, Norway, Qatar, Belarus, Netherlands.

Cities we have supplied our products to:

Bengaluru, Vung Tau, Nashik, Jaipur, Navi Mumbai, La Victoria, Al Jubail, Noida, Granada, Doha, Dammam, Ernakulam, Chandigarh, Santiago, Melbourne, Surat, Nagpur, Ranchi, Kanpur, Jakarta, Ahvaz, Indore, Jamshedpur, Muscat, Rajkot, Lahore, Chiyoda, Milan, Hong Kong, Riyadh, Houston, Busan, Calgary, Madrid, Visakhapatnam, Atyrau, Bhopal, Algiers, Colombo, Kolkata, Petaling Jaya, Dallas, London, Cairo, Thiruvananthapuram, Caracas, Howrah, Moscow, Port-of-Spain, Baroda, Mexico City, Gurgaon, Singapore, Aberdeen, Coimbatore, Kuala Lumpur, Perth, Ahmedabad, New York, New Delhi, Manama, Abu Dhabi, Montreal, Jeddah, Pune, Vadodara, Kuwait City, Chennai, Geoje-si, Tehran, Mumbai, Hanoi, Karachi, Pimpri-Chinchwad, Thane, Haryana, Ulsan, Seoul, Dubai, Ho Chi Minh City, Toronto, Hyderabad, Los Angeles, Faridabad, Lagos, Sydney, Courbevoie, Bangkok, Bogota, Rio de Janeiro, Ankara, Al Khobar, Ludhiana, Istanbul, Gimhae-si, Brisbane, Edmonton, Sharjah, Secunderabad.

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