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Pooja Steel India

Pooja Steel India

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Blind Flange

Blind flanges, also known as blanking flanges, are widely used in high-pressure applications to seal the end of a piping system and prevent the flow of liquids or gases. They allow ease of access to a closed piping system. Our blind flanges are available with raised or RTJ faces, and with or without hubs, as per customer requirements. They are used in industries such as shipbuilding, power generation, petrochemical plants, oil refineries, and more.

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Description

Blind Flange Standard Specifications

SpecificationDescription
Dimension StandardANSI B16.5, MSS SP44, Custom Drawings
Size Range1/2″ (15 NB) to 48″ (1200 NB)
Pressure Classes150, 300, 600, 900, 1500, 2500 LBS
DIN StandardsDIN2527, DIN2642, DIN2635, DIN2638, DIN2673, etc.
BS StandardsBS4504, PN6, PN10, PN16, PN25, PN40, etc.
API StandardsPSI-2000/3000/5000/10000, etc.
JIS Standards2220-2004 5k/10k/16k, etc.
Flange Face TypesFF (Flat Face), RF (Raised Face), RTJ (Ring Type Joint)

Blind Flange Material & Grades

Blind flanges are available in a variety of materials and grades to suit different pressure and temperature requirements. Here are some common options:

  • Stainless Steel: ASTM A 182, A 240 F 304, 316, 321, 347, 904L
  • Duplex & Super Duplex Steel: ASTM / ASME A/SA 182 F 44, F 51, F 53, F 55, F 60, F 61
  • Carbon Steel: ASTM / ASME A/SA 105, A 350, A 181 LF 2, A516 Gr.70, A36, A694, etc.
  • Low Temp Carbon Steel: ASTM A350 LF2, LF3.
  • Alloy Steel: ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F22, F91.
  • Copper Alloy Steel: ASTM SB 61, SB62, SB151, SB152.
  • Nickel Alloy: ASTM SB564, SB160, SB472, SB162, etc.