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Manufacturer,Stockist and Exporter of ANSI/ASME B16.47 Series A(MSS SP44) Blind Flanges
ANSI/ASME B16.47 Series A(MSS SP44) Blind Flanges
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Manufacturer,Stockist and Exporter of ANSI/ASME B16.47 Series A(MSS SP44) Blind Flanges

ANSI/ASME B16.47 Series A(MSS SP44) Blind Flanges , ANSI/ASME B16.47 Series A(MSS SP44) Blind Flanges , A105 Heat Exchanger Flange, ANSI/ASME B16.47 Series B  Blind Flange, a105 blind flange, A105 Marine Flange,ANSI/ASME B16.47 Series A(MSS SP44) Blind Flanges ,ANSI B16.47 Series A Blind Flange

Raj Bhoomi Engineers is a renowned manufacturer, stockist, and exporter of ANSI/ASME B16.47 Series B Blind Flanges, serving a global network of industries that rely on high-performance piping components. These flanges are manufactured to meet rigorous quality standards and are essential in large-diameter piping systems where system isolation or flow termination is required. With a consistent focus on engineering excellence, Raj Bhoomi Engineers supplies these flanges to critical markets such as Oman, Qatar, Saudi Arabia, UAE, Kuwait, Spain, Germany, the USA, Canada, and across Africa.

The ANSI/ASME B16.47 Series B Blind Flanges (previously known as API 605 flanges) are widely used in industries like oil and gas, petrochemical, water treatment, and power generation. These flanges are designed to close the end of piping systems and pressure vessel openings, making them vital for systems requiring access or future expansion. Series B flanges differ from Series A primarily in their bolt circle diameters and pressure ratings—they generally offer a more compact design and are used in less demanding pressure environments compared to Series A.

ANSI/ASME B16.47 Series A(MSS SP44) Blind Flanges

Raj Bhoomi Engineers manufactures these blind flanges using premium-grade materials such as ASTM A105 (Carbon Steel), ASTM A350 LF2 (Low-Temperature Carbon Steel), and ASTM A694 (High-Yield Carbon Steel). Available in pressure classes ranging from 150 to 900 and sizes from 26” to 60” and above, these flanges are produced as per ASME B16.47 Series B specifications to ensure full compatibility and safe operation in large-diameter pipelines. Raised Face (RF) and Ring Type Joint (RTJ) configurations are also available depending on the sealing requirements.

Quality assurance is a core aspect of Raj Bhoomi Engineers’ operations. Each ANSI/ASME B16.47 Series B Blind Flange undergoes rigorous testing, including ultrasonic, hydrostatic, and chemical analysis, to comply with industry norms and customer-specific requirements. Flanges are also supplied with full traceability documentation, including Mill Test Certificates (MTC) per EN 10204 3.1 or 3.2. This commitment to quality ensures the product's reliability even in harsh operating conditions.

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Specification of ANSI/ASME B16.47 Series A(MSS SP44) Blind Flanges

Specification Details
Standard ANSI/ASME B16.5
Flange Type Blind Flange (used to seal the end of a piping system)
Material Grades ASTM A105, A105N (Carbon Steel), A182 F304/F316 (Stainless Steel), A350 LF2
Size Range ½” to 24” (DN15 to DN600)
Pressure Classes 150#, 300#, 400#, 600#, 900#, 1500#, 2500#
Face Types Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ)
Design Standard ASME B16.5 (covers flanges from NPS ½” to 24”)
Dimensions As per ASME B16.5 for OD, thickness, bolt circle, etc.
Surface Finish Serrated finish on face (stock or spiral), smooth finish available
Testing & Certification Hydrostatic test, NDT, UT, MTC EN 10204 3.1/3.2
Applications Oil & Gas, Petrochemical, Water Treatment, Power Generation, Marine, etc.


Raj Bhoomi Engineers supports global projects with flexible logistics and responsive customer service. Whether it's a bulk export shipment to Canada or a custom specification flange for a project in Saudi Arabia, the company’s strategic production and supply chain capabilities allow it to serve clients efficiently and cost-effectively.
Raj Bhoomi Engineers is a trusted name in the global flange industry for ANSI/ASME B16.47 Series B Blind Flanges, known for its dedication to quality, customization, and global outreach. Their flanges are a preferred choice for engineers and project managers seeking durable, standard-compliant components for large-diameter piping systems around the world.

ANSI/ASME B16.47 Series A(MSS SP44) Blind Flanges Chemical Properties

Element Composition (%) Remarks
Carbon (C) ≤ 0.35 Provides hardness and strength
Manganese (Mn) 0.60 – 1.05 Enhances toughness and strength
Phosphorus (P) ≤ 0.035 Should be low to avoid embrittlement
Sulfur (S) ≤ 0.040 Excessive sulfur can reduce ductility
Silicon (Si) 0.10 – 0.35 Improves strength and oxidation resistance
Copper (Cu)* ≤ 0.40 Optional – for improved corrosion resistance
Nickel (Ni)* ≤ 0.40 Optional – adds toughness and corrosion resistance
Chromium (Cr)* ≤ 0.30 Optional – increases hardness and oxidation resistance
Molybdenum (Mo)* ≤ 0.12 Optional – improves high-temp strength
Vanadium (V)* ≤ 0.08 Optional – helps refine grain structure


ANSI/ASME B16.47 Series A(MSS SP44) Blind Flanges Mechanical Properties

Property Value Unit Remarks
Tensile Strength ≥ 485 MPa (≥ 70 ksi) Minimum required per ASTM A105/A105N
Yield Strength ≥ 250 MPa (≥ 36 ksi) 0.2% offset method
Elongation ≥ 22 % Based on standard gauge length
Reduction of Area ≥ 30 % Indicates ductility and formability
Hardness (Brinell) ≤ 187 HB Maximum value as per ASTM A105/A105N
Impact Strength (Charpy) > 27 (if normalized, at -20°C) Joules Only applicable when specified as A105N (normalized)

Features of ANSI/ASME B16.47 Series A(MSS SP44) Blind Flanges

  • 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 ANSI/ASME B16.47 Series A(MSS SP44) Blind Flanges

A105 Pressure Vessel Flange Forged A105 Blind Flange
A105 Flange RTJ A105 RF Blind Flange
ANSI/ASME B16.47 Series A(MSS SP44) Blind Flanges 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 B16.47 Series A(MSS SP44) Blind Flanges
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

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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.

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