BLIND FLANGES

Alloyed Sustainables LLP is a top manufacturer, stockist, and exporter of blind flanges in India. Blind flanges are employed in many different industries, such as the petrochemical, pipe engineering, oil and gas, shipbuilding, power generation, docks, water treatment, and chemical industries. Alloyed Sustainables offer Blind Flanges in diameters range from 1/2″ NB to 60″ NB and materials, including Alloy Steel Blind Flanges, Carbon and LTCS Blind Flanges, Copper and Nickel Blind Flanges, Stainless Steel Blind Flanges, Hastelloy Blind Flanges, Inconel Blind Flanges, SMO 254 Blind Flanges, Etc.

A blind flange is a type of flange used in piping systems to seal the end of a pipe or vessel opening. It consists of a solid disk with bolt holes and is used for purposes like isolating sections during maintenance, pressure testing, and preparing for future expansions. Due to their high degree of ductility and formability, our blind flanges have a significant commercial value in the industries such as Oil and Gas, Marine, Aerospace, and Medicine. Blind Flanges manufactured by Alloyed Sustainables are in accordance with the standards like DIN, AWWA, API Dimensions, ANSI/ASME B16.5, B16.47, and B16.48. Blind flange may include a number of sealing faces, such as a Tongue-and-Groove Face, a Right Type Joint Face, a Raised Face, Male and Female Faces, and Flat and Raised Faces.

Key Features of Blind Flanges:

• Closure: Blind flanges are designed to close the end of a pipe or vessel opening, preventing the flow of fluids or gases.
• Solid Disk: Unlike other flanges that have an opening in the center, blind flanges consist of a solid disk without an opening.
• Bolt Holes: Blind flanges have bolt holes around the perimeter, allowing them to be bolted securely to the pipe or vessel.
• Isolation: They are used for isolating sections of pipelines or equipment during maintenance, repairs, or inspections.
• Pressure Testing: Blind flanges are employed in pressure testing to seal one end of a pipeline while pressure is applied from the other end.
• Installation: Blind flanges are installed by aligning their bolt holes with those on the pipe or vessel’s flange face and securing them with bolts and nuts.

Application across Industries:

• Oil and Gas Industry: Blind flanges are used in oil and gas pipelines and refineries for isolating sections during maintenance, pressure testing, and as placeholders for future extensions.
• Chemical Industry: They are employed in chemical processing plants for isolating sections during maintenance, inspections, and to prevent leaks during pressure testing.
• Power Generation: In power plants, blind flanges are used to seal off pipes and equipment during maintenance, inspections, and pressure testing of steam, water, or gas systems.
• Water Treatment: Blind flanges are used in water treatment plants to isolate sections of pipelines during repairs, maintenance, and pressure testing.
• Shipbuilding and Marine Industry: Blind flanges are used in shipbuilding for various applications, including sealing off pipes and equipment during maintenance and repairs.

We manufacture blind flanges employing an extensive selection of materials and grades, carefully tailored to meet the distinct specifications of our clients spanning a wide range of industries.

STAINLESS STEEL & DUPLEX STEEL BLIND FLANGES:
Specifications:

• Size : 1/2″ NB to 48″ NB, ANSI/ASME B 16.5
• Standard : 150# , 300#, 600#, 900#, 1500#, 2500# in ASA 150 & ASA 300
• Stainless Steel : ASTM A 240 / 182 F – 304/
  304H/ 304L/ 316/ 316H/ 316L/ 316Ti/ 309/ 310/ 317L/ 321/ 347/ 904L/Alloy 20
• Duplex steel : ASTM A 182 – F 51, F53, F55

ALLOY STEEL, CARBON STEEL & LTCS BLIND FLANGES:
Specifications:

• Size : 1/2″ NB to 48″ NB, ANSI/ASME B16.5
• Class : 150# , 300#, 600#, 900#, 1500#, 2500# in ASA 150 & ASA 300
• Alloy Steel : ASTM A 182 – F5, F9, F11, F12, F22 & F91
• Carbon Steel : ASTM A 105, ASTM A694, F42, F46, F52, F60, F65, F70
• Low Temperature Carbon Steel : A 350 LF2, A 516 GR. 70



COPPER & NICKEL ALLOYS BLIND FLANGES:
Specifications:

• Size : 1/2″NB to 6″ NB, ANSI/ASME B 16.5
• Standard : 150# , 300#, 600#, 900#, 1500#, 2500# in ASA 150 & ASA 300
• Copper Nickel : C70600(90: 10). C71500 (70:30), C71640
• Nickel : UNS N02200, N02201
• Monel : UNS N04400
• lnconel : UNS N06600, N06601, N06625, N08800, N08810, N08825
• Hastelloy : UNS N10276, N06022, N10665, N06455
• Titanium Gr: 1,2,3 DTH 3.7025, DTH 3.7035, DTH 3.7055
• SMO 254: UNS S31254