Manufacturer,Stockist and Exporter of A105 CS Oversized Blind Flange

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A105 CS Oversized Blind Flange is a specialized component used to seal the end of a piping system, pressure vessel, or valve connection. Manufactured from carbon steel grade ASTM A105, this flange type is engineered to withstand high pressure and temperature conditions. The “oversized” specification indicates that it’s designed with a larger diameter than standard blind flanges, allowing for greater flexibility in non-standard or custom piping assemblies. Its primary function is to provide easy access for maintenance, inspection, or expansion of the system, while ensuring a leak-proof seal.

Raj Bhoomi Engineers is a trusted name in the manufacturing and global supply of A105 CS Oversized Blind Flanges, delivering high-quality products built to international standards such as ASME B16.5, ANSI, and API. With a strong commitment to precision engineering and consistent quality control, the company produces oversized blind flanges that are not only durable and corrosion-resistant but also dimensionally accurate. Their flanges undergo rigorous inspection, including hydro testing, ultrasonic testing (UT), and positive material identification (PMI), to meet stringent performance criteria.

As a prominent manufacturer, stockist, and exporter, Raj Bhoomi Engineers maintains a robust inventory of A105 CS Oversized Blind Flanges in various pressure ratings, from Class 150 to Class 2500. The company serves diverse industries such as oil and gas, petrochemical, energy, shipbuilding, and water treatment. With the ability to customize sizes and pressure classes based on client requirements, Raj Bhoomi Engineers has built a reputation for reliability, technical expertise, and timely delivery.

Their global export network spans across major industrial regions including Oman, Qatar, Saudi Arabia, UAE, Kuwait, Spain, Germany, the USA, Canada, and several key markets in Africa and worldwide. This extensive distribution capability ensures that clients receive timely shipments, backed by excellent after-sales support. Raj Bhoomi Engineers' ability to fulfill bulk orders and provide custom-engineered solutions has made them a preferred supplier for complex and large-scale infrastructure projects.

Specification of A105 CS Oversized Blind Flange

Specification	Details
Material Grade	ASTM A105 (Carbon Steel)
Flange Type	Oversized Blind Flange
Design Standard	ASME B16.5 / ANSI B16.47 / MSS-SP-44 / API / DIN / EN
Size Range	½" to 60" (DN15 to DN1500) or custom oversized dimensions
Pressure Class	150#, 300#, 600#, 900#, 1500#, 2500#
Face Type	Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ)
Wall Thickness	As per pressure class or customer specification
Temperature Range	-29°C to 425°C (-20°F to 800°F)
Connection Type	Bolted connection (no borehole – used to seal ends)
Surface Finish	125–250 AARH (As per MSS-SP-6)
Coating/Protection	Black paint, anti-rust oil, hot-dip galvanized, or custom finish
Applications	Oil & Gas, Petrochemical, Refinery, Power Plants, Water Systems, Marine
Testing & Inspection	Hydro Test, UT, Radiography, Hardness Test, PMI, Dimensional Inspection
Certification	EN 10204 3.1 / 3.2, ISO, NACE MR0175, PED, IBR (if applicable)

Customer satisfaction and long-term partnerships are at the core of Raj Bhoomi Engineers’ philosophy. They focus not only on product excellence but also on service quality, offering expert consultation, documentation support, and quality assurance certifications such as EN 10204 3.1/3.2, NACE, and ISO. Each A105 CS Oversized Blind Flange is manufactured to meet or exceed the highest standards of performance, making them suitable for the most demanding environments.

A105 CS Oversized Blind Flanges by Raj Bhoomi Engineers offer superior strength, precise fit, and global availability. Whether for industrial shutdowns, system expansion, or new installations, clients around the world trust Raj Bhoomi Engineers for high-performance flange solutions delivered with professionalism and consistency.

A105 CS Oversized Blind Flange Chemical Properties

Element	Composition (%)	Remarks
Carbon (C)	≤ 0.35	Increases strength but reduces ductility
Manganese (Mn)	0.60 – 1.05	Improves strength and toughness
Phosphorus (P)	≤ 0.035	Should be low to avoid brittleness
Sulfur (S)	≤ 0.040	Should be low to improve weldability
Silicon (Si)	0.10 – 0.35	Enhances strength and hardness
Copper (Cu)	≤ 0.40 (if specified)	Optional – for improved corrosion resistance
Nickel (Ni)	≤ 0.40 (if specified)	Optional – improves toughness
Chromium (Cr)	≤ 0.30 (if specified)	Optional – improves strength and hardness
Molybdenum (Mo)	≤ 0.12 (if specified)	Optional – for enhanced high-temperature strength
Vanadium (V)	≤ 0.08 (if specified)	Optional – increases strength and wear resistance

A105 CS Oversized Blind Flange Mechanical Properties

Property	Value / Requirement	Units	Remarks
Tensile Strength	≥ 485	MPa	Equivalent to ≥ 70,000 psi
Yield Strength	≥ 250	MPa	Equivalent to ≥ 36,000 psi
Elongation (in 2")	≥ 22	%	Indicates ductility
Reduction of Area	≥ 30	%	Measures material’s ability to withstand deformation
Hardness (Brinell)	≤ 187	HB	Max limit as per ASTM A105
Impact Toughness	As required by application	J (Joules)	Typically tested at sub-zero temperatures if needed
Modulus of Elasticity	~ 200,000	MPa	Equivalent to ~29,000,000 psi

Features of A105 CS Oversized 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 A105 CS Oversized 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 – A105 CS Oversized Blind Flange

1. What is an A105 CS Oversized Blind Flange?

An A105 CS Oversized Blind Flange is a large-diameter carbon steel flange manufactured as per ASTM A105 standards. It is used to seal or close oversized pipeline ends, valves, or equipment in high-pressure and high-temperature applications.

2.In which industries are oversized blind flanges commonly used?

Oversized blind flanges are widely used in oil & gas, petrochemical, offshore platforms, refineries, water treatment plants, and power generation projects, where large-diameter pipelines require secure closures.

3. What sizes and pressure classes are available for oversized blind flanges?

They are available in large diameters (typically 24” to 70” or more) and pressure ratings ranging from 150# to 2500#, depending on project requirements.

4. Can A105 CS Oversized Blind Flanges be customized?

Yes, they can be manufactured with special drilling patterns, coatings (galvanized, epoxy-coated, anti-rust), and surface finishes to suit specific industrial applications.

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