Blind Flange Manufacturer and Exporter

A leading manufacturer, exporter, suppliers & stock holder of Blind Flange & we provide a comprehensive range of Blind Flange.

We manufacture Blind Flange in India for export all around the world.

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A popular category of pipe flange is the blind flange. A blind flange is used to close ends of piping systems. It is a kind of round plate with no center hold but with all the proper bolt holes. We can offer a comprehensive range of Blind Flange for the right technical solution. Piyush Steel manufacture & export wide selections of ANSI B16.5 Blind Flange & ASME B16.47 Blind Flange at most attractive price as per customer requirements, we can also manufacture Blind Flange in ASTM/ASME/ANSI grades as per our customer budget, we enjoy the reputation supplying Blind Flange at cheapest in steel industries around the globe.

Blind Flange Description

Other Name: BLIND FLANGE, BLRF FLANGE, BLFF FLANGE, BLIND FLANGE RF, B16.5, ASTM A105, BLANK FLANGE

Blind pipe flanges are pipe flanges used to seal the end of a piping system or pressure vessel openings to prevent flow. Blind pipe flanges are commonly used for pressure testing the flow of liquid or gas through a pipe or vessel.

Standard: ANSI, ASME, ASA B16.5
Size: 1/2” - 48”
Material: ASTM A105, CARBON STEEL
Supply Ability: 3000Ton/Month
Process: Forged, Forging
Packing: Plywood Pallets
Payment Terms: T/T, L/C, D/P
BLIND FLANGE, BLANK FLANGE, BLFF FLANGE, BLRF FLANGE, monthly output 3000Ton, material carbon steel & Stainless Steel.

Norms & Types

1) BLIND FLANGE RF, BLRF FLANGE, BLANK FLANGE, BL FLANGE RAISED FACE, CLASS 150, 150LBS, 150#, 1/2" - 48", ASTM A105.
2) BLIND FLANGE RF, BLRF FLANGE, BLANK FLANGE, BL FLANGE RAISED FACE, CLASS 300, 300LBS, 300#, 1/2" - 48", ASTM A105.
3) BLIND FLANGE RF, BLRF FLANGE, BLANK FLANGE, BL FLANGE RAISED FACE, CLASS 600, 600LBS, 600#, 1/2" - 48", ASTM A105.
4) BLIND FLANGE RF, BLRF FLANGE, BLANK FLANGE, BL FLANGE RAISED FACE, CLASS 900, 900LBS, 900#, 1/2" - 48", ASTM A105.
5) BLIND FLANGE RF, BLRF FLANGE, BLANK FLANGE, BL FLANGE RAISED FACE, CLASS 1500, 1500LBS, 1500#, 1/2" - 48", ASTM A105.
6) BLIND FLANGE RF, BLRF FLANGE, BLANK FLANGE, BL FLANGE RAISED FACE, CLASS 2500, 2500LBS, 2500#, 1/2" - 48", ASTM A105.

Material

1) ASTM A105, A105N

Surface Antirust:
Surface antirust 1: Antirust light oil
Surface antirust 2: Black paint coating
Surface antirust 3: Yellow paint coating or Red paint coating
Surface antirust 4: Galnavized (Hot galvanized or Cold galvanized or Electro Galvanized)

Surface Finish:
Surface finish 1: Stock finish
Surface finish 2: Sprial serrated
Surface finish 3: Two or three grooves (Water Lines)
Surface finish 4: Smooth finish

Blind Flange Dimensions & Tolerances

blind_flange

NPS 1/2
Class 150 300 400 600 900 1500 2500
Diameter - D 90 95 95 95 120 120 135
Height - B 9.6 12.7 14.3 14.3 22.3 22.3 30.2
11.2 14.3 20.7 20.7 28.7 28.7 36.6
Diameter - G 35.1 35.1 35.1 35.1 35.1 35.1 35.1
Diameter - K 60.3 66.7 66.7 66.7 82.6 82.6 88.9
Bolt Holes 4 4 4 4 4 4 4
Diameter - L 15.9 15.9 15.9 15.9 22.2 22.2 22.2
Stud Bolts Diameter x Length
Diameter (in) 1/2 1/2 1/2 1/2 3/4 3/4 3/4
Length (mm) 55 65 75 75 110 110 120
NPS 3/4 1 2 3 4 6 8 10 12 14 16 18 20 24

--------------------------------------------------------------------------------- > NPS <------------------------------------------------------------------------------

Dimensional Tolerances of Blind Flanges ASME B16.5

Outside Diameter
≤ 24 = 1.6 mm | > 24 = ± 3.2 mm
Inside Diameter
not applicable
Diameter of Contact Face
1.6 mm Raised Face = ± 0.8 mm
6.35 mm Raised Face, Tongue & Groove / Male-Female = ± 0.4 mm
Outside Diameter of Hub
≤ 12 = + 2.4 mm / - 1.6 mm | ≥ 14 = ± 3.2 mm
Diameter of Counterbore
not applicable
Drilling
Bolt Circle = 1.6 mm | Bolt Hole Spacing = ± 0.8 mm
Eccentricity of Bolt Circle with Respect to Facing
≤ 2½ = 0.8 mm max. | ≥ 3 = 1.6 mm max.
Thickness
≤ 18 = + 3.2 mm / - 0 | ≥ 20 = + 4.8 mm / - 0
Length thru Hub
≤ 18 = + 3.2 mm / - 0.8 mm | ≥ 20 = + 4.8 mm / - 1.6 mm

Notes
1. Dimensions are in millimeters unless otherwise indicated.
2. The length of the stud bolt does not include the height of the chamfers (points).

Blind Flanges Product Range
Range
½" (15 NB) to 48" (1200NB) in 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS ASA 150, ASA 300, PN 6,10,16, 25, 40,64,100,160 ETC. Available with NACE MR 01-75

Stainless Steel Blind Flanges
Grade : 304, 304L, 304H, 309, 310, 310S, 316, 316Ti, 316 L, 317, 317L, 321, 347, 347 H, 409, 410, 410S, 420, 430L

Duplex Steel Blind Flanges
Grade : 2205 (UNS No. S31803), 2507 (UNS No. S32750)

Nickel Alloy Blind Flanges
Grade : Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020), Titanium (Grade I & II)

Copper Alloy Blind Flanges
Grade : UNS No. C 10100, 10200, 10300, 10800, 12000, 12200, 70600, 71500, UNS No. C 70600 (Cu -Ni- 90/10), C 71500 (Cu -Ni- 70/30)

Blind Flanges Standard

  • ANSI : ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
  • DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
  • B.S : BS4504, BS4504, BS1560, BS10
  • OTHER : PLATE, PLATE BLANK

    Value Added Services for Blind Flanges
  • HOT DIPPED GALVANIZING
  • HEAT TREATMENT
  • CNC MACHINING
  • THREADING

Blind Flange Packaging & Marking

Blind Flange Packed ready stock   Blind Flange export packing

Blind Flange are individually wrapped by hand to ensure that the high quality of the material is maintained and no damage in the last stages of production. We recommend Plywood cases or pallet packaging to ensure safe packaging and prompt delivery of the ordered consignment.

Blind Flange come with imprints relevant to the job information (eg, heat number, size, material and part number). This information is also printed along all delivered Blind Flange.

Pressure class of Blind Flange

Blind Flange Price

ASME B16.5 Welding Neck Flange
FOB Price: US $1-2000 / Ton

ANSI Class150 4" Welding Neck Flange
FOB Price: US $700-1400 / Ton

Forged F304 B16.5 150LBS Slip On Flange
FOB Price: US $0.1-266 / Piece

Flange f304 a105 rf/ff slip on flange pn16 150ib
FOB Price: US $600-8000 / Ton

bs4504 pn16 socket welding flange high quality
FOB Price: US $1100.00-1450.00 / Ton

150lb socket welding stainless flanges F316
FOB Price: US $0.12-150 / Piece

lap joint flange a105
FOB Price: US $1000-2500 / Ton

ansi b16.5 class 150 lap joint flange
FOB Price: US $1-500 / Piece

ANSI Class150 Threaded Flange
FOB Price: US $700-1400 / Ton

threaded flange
FOB Price: US $1-5000 / Piece

EN1092 Forged Steel Blind Flange
FOB Price: US $1000-1200 / Ton

stainless steel pn10 blind flange
FOB Price: US $1-2000 / Piece

spectacle blind B16.48/API590
FOB Price: US $1-5000 / Piece

square flange
FOB Price: US $1000-2500 / Ton

Blind Flange Inventory

PDF ASME / ANSI B16.5 / ASME B16.47 Flange- Download PDF

ASME / ANSI B16.5 / ASME B16.47 Flange

 


Available materials for Flange

Flange Inventory

Stainless Steel Nickel Alloys Carbon Steel & Alloy Steel

Stainless Steel Flange
Stainless Steel 304 Plate Flange
Stainless Steel 304 Forged Flange
Stainless Steel 304L Plate Flange
Stainless Steel 304L Forged Flange
Stainless Steel 310 Plate Flange
Stainless Steel 310 Forged Flange
Stainless Steel 310S Plate Flange
Stainless Steel 310S Forged Flange
Stainless Steel 316 Plate Flange
Stainless Steel 316 Forged Flange
Stainless Steel 316L Plate Flange
Stainless Steel 316L Forged Flange
Stainless Steel 317 Plate Flange
Stainless Steel 317 Forged Flange
Stainless Steel 317L Plate Flange
Stainless Steel 317L Forged Flange
Stainless Steel 321 Plate Flange
Stainless Steel 321 Forged Flange
Stainless Steel 321H Plate Flange
Stainless Steel 321H Forged Flange
Stainless Steel 347 Plate Flange
Stainless Steel 347 Forged Flange
Stainless Steel 347H Plate Flange
Stainless Steel 347H Forged Flange
Stainless Steel 446 Plate Flange
Stainless Steel 446 Forged Flange
Duplex 2205 Plate Flange
Duplex 2205 Forged Flange
Super Duplex 2507 Plate Flange
Super Duplex 2507 Forged Flange

High Nickel Alloy Flange
Nickel 200 Plate Flange
Nickel 200 Forged Flange
Nickel 201 Plate Flange
Nickel 201 Forged Flange
Monel 400 Plate Flange
Monel 400 Forged Flange
Monel K500 Plate Flange
Monel K500 Forged Flange
Inconel 600 Plate Flange
Inconel 600 Forged Flange
Inconel 601 Plate Flange
Inconel 601 Forged Flange
Inconel 625 Plate Flange
Inconel 625 Forged Flange
Inconel 718 Plate Flange
Inconel 718 Forged Flange
Incoloy 800 Plate Flange
Incoloy 800 Forged Flange
Incoloy 800H Plate Flange
Incoloy 800H Forged Flange
Incoloy 800HT Plate Flange
Incoloy 800HT Forged Flange
Incoloy 825 Plate Flange
Incoloy 825 Forged Flange
Hastelloy C276 Plate Flange
Hastelloy C276 Forged Flange
Hastelloy C22 Plate Flange
Hastelloy C22 Forged Flange
Hastelloy B2 Plate Flange
Hastelloy B2 Forged Flange
Alloy 20 Plate Flange
Alloy 20 Forged Flange
904L Plate Flange
904L Forged Flange
254 SMO Plate Flange
254 SMO Forged Flange
Hastelloy x Plate Flange
Hastelloy x Forged Flange

 

Products

Available Materials

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