A105 Big Size Blind Flange

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A105 Big Size Blind Flange is a robust and essential component used to seal off the ends of large-diameter pipelines, pressure vessels, and process systems. Manufactured from ASTM A105 carbon steel, this flange type is designed for high-strength and high-pressure applications, particularly in demanding industries such as oil & gas, petrochemicals, water treatment, and power generation. Its large size allows it to accommodate higher flow volumes and pressure containment requirements in critical operations.

As a manufacturer, stockist, and exporter, companies specializing in A105 Big Size Blind Flanges focus on precision forging and strict adherence to international standards like ASME B16.47 (Series A & B) and ASME B16.5. These flanges typically range from 26” to 60” in diameter and are offered in pressure classes from Class 150 to Class 2500. Their heavy-duty design ensures structural integrity and leak-proof performance under fluctuating loads and thermal stress.

A105 Big Size Blind Flanges are widely exported to global markets, with consistent demand from Oman, Qatar, Saudi Arabia, UAE, and Kuwait due to ongoing industrial and energy projects. Additionally, they are shipped to Spain, Germany, the USA, Canada, and numerous regions across Africa, supporting infrastructure expansion and maintenance operations. Exporters often provide material test certificates (MTCs), third-party inspection reports, and customized coating options such as black paint, anti-rust oil, or epoxy for corrosion resistance.

These flanges are typically offered with various face types like RF (Raised Face), FF (Flat Face), and RTJ (Ring Type Joint) and are available with different surface finishes including stock finish and serrated finish. Quality manufacturers follow stringent quality control procedures, including hydrostatic testing, ultrasonic inspection, and dimensional verification, to ensure each unit meets project specifications and international compliance requirements.

Specification of A105 Big Size Blind Flange

Specification	Details
Material Grade	ASTM A105 (Carbon Steel)
Flange Type	Blind Flange
Manufacturing Process	Forged
Pressure Ratings	ANSI Class 150, 300, 600, 900, 1500, 2500
Standards	ASME B16.5, ASME B16.47, API 6A
Size Range	½” to 60” (DN15 to DN1500)
Face Type	RF (Raised Face), FF (Flat Face), RTJ (Ring Type Joint)
Surface Finish	Serrated, Smooth, Stock
Coating/Finish	Anti-rust oil, Black Paint, Galvanized, or Customized
Temperature Range	-29°C to 593°C (-20°F to 1100°F), depending on service conditions
Applications	Oil & Gas, Petrochemical, Power Generation, Marine, Water Treatment
Certification	EN 10204 3.1 / 3.2, NACE MR0175, ISO, PED compliant

From a mechanical standpoint, A105 Big Size Blind Flanges exhibit a minimum tensile strength of 485 MPa, a minimum yield strength of 250 MPa, and elongation of at least 22%, making them suitable for high-stress industrial systems. Their resilience, combined with ease of installation and maintenance access, makes them a preferred solution for pipeline isolation and maintenance planning.

the A105 Big Size Blind Flange is a high-performance product trusted by engineers and procurement teams around the world. Its large dimensions, dependable mechanical properties, and worldwide availability through trusted exporters make it an indispensable component in large-scale industrial and infrastructure projects.

A105 Big Size Blind Flange Chemical Properties

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

A105 Big Size Blind Flange Mechanical Properties

Property	Value
Tensile Strength (min)	485 MPa (70 ksi)
Yield Strength (min)	250 MPa (36 ksi)
Elongation (min)	22% in 50 mm (2 in.)
Reduction of Area	30% (typical)
Hardness (max)	187 HBW (Brinell) or 91 HRB (Rockwell B)
Impact Testing	Not mandatory unless specified by purchaser
Temperature Range	Suitable for service from -29°C to 425°C (-20°F to 800°F)

Features of A105 Big Size 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 Big Size Blind Flange

A105 Pressure Vessel Flange	Forged A105 Blind Flange
A105 Big Size Blind Flange	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

People Searched For A105 Big Size Blind Flange:

Countries we have exported our products to:

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Cities we have supplied our products to:

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