Manufacturer, Exporter & Supplier of Blind Flanges, BLRF Flanges, Carbon Steel Blind Flanges, Stainless Steel Blind Flanges

Blind Flanges / BLRF Flanges

Blind Flanges

We are Manufacturer, Supplier and Exporter of ASME 16.5 Blind Flanges / BLRF Flanges. Blind Flanges are commonly used in petrochemical, pipe engineering, public services & water works. This flange is used to blank off pipelines, valves and pumps, it can also be used as an inspection cover. These are available in wide variety of sizes and applications. To make these products highly suitable for various industrial applications, we are offering them in customized designs.

Size : ½" (15 NB) to 48" (1200NB)
Class : 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.
Material : Grade
In Form : LAP Joint, Threaded, Reducing, SORF, WNRF, BLRF, SWRF, Spectacle, etc
Specialize : As per drawing
Standard : ANSI B16.5, ANSI B16.47, ANSI B16.36, ANSI B16.48, BS 4504, EN1092, UNI 2277/2278, DIN
Connection Type : Raised Face, Flat Face, Ring Type Joint, Lap-Joint Face, Large Male-Female, Small Male-Female, Large
    Tongue & Groove, Small Tongue & Groove.
Type of Flanges : Blind Raise Face -BLRF, Weld Neck Flanges - WNRF, Socket Weld Flanges - SWRF, Slip On Raise Face -
    SORF, Spectacle Blind, Ring Joint, Large Dia Flanges, Orifice Flanges, Girth Flange, Lap Joint Flanges,
    Screwed  (Threaded) Flanges, Long Weld Neck Flanges, Reducing.
Stainless Steel Blind Flanges : ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L
Carbon Steel Blind Flanges : ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60,
    F65, F70
Alloy Steel Blind Flanges : ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91
Duplex Steel Blind Flanges : ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61, 2205 (UNS No. S31803), 2507 (UNS No.
    S32750)
Nickel Alloy Blind Flanges : 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 : 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).
Dimensions of Blind Flanges ASME B16.5
NPS ½
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
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
Our Sales Location
¤ USA ¤ Costa Rica ¤ Saudi Arabia
¤ Canada ¤ Italy ¤ Brazil
¤ Singapore ¤ Bahrain ¤ Malaysia
¤ Russia ¤ Venezuela ¤ Oman
¤ Sri Lanka ¤ Poland ¤ Spain
¤ Turkey ¤ Qatar ¤ Thailand
¤ Angola ¤ Chile ¤ U.A.E
¤ Egypt ¤ Indonesia ¤ Portugal
Main Export Market
¤ America ¤ Mid East/Africa ¤ Australasia
¤ Asia ¤ Western Europe ¤ UAE
¤ Central/South ¤ North America ¤ Eastern Europe