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What is ASME B16.5 Blind Flange
ASME B16.5 Blind flange is a flange without a hole in the middle, used to seal pipeline openings. The formal name of blind plate is flange cover, which plays the same function as the head and pipe cap. However, blind plate sealing is a detachable sealing device, while head sealing is not detachable.
The sealing surfaces are various types of blind flanges, such as flat face, tenon groove face and ring connection surfaces.
ASME B16.5 Blind flange materials have carbon steel blind flange, low temperature steel blind flange and stainless steel blind flange.
Specification of ASME B16.5 Blind Flange
ASME B16.5 standard covers pressure temperature ratings, materials, dimensions, tolerances, marking, testing and methods of designating openings for pipe flanges and flanged fittings. Such as weld neck flanges, slip-on flanges, socket weld flanges, threaded flanges, blind flanges, lap joint flanges and flangolets.
| Sealing Face | RF, FF, FTJ |
| Size Range | 1/2"- 24"/ DN15-DN600 |
| Pressure Rating | Class 150, 300, 600, 900, 1500, 2500lb |
| Standard | ASME / ANSI B16.5, ASME B16.47 Series A/B |
| Carbon Steel | ASTM A105 / A105N |
| Low Temp Carbon Steel | ASTM A350 LF2/LF3 |
| Pipeline Steel | ASTM A694 F42 / 46 / 56 / 60 / 65 |
ASME B16.5 Blind Flange Class 150 Dimension & Weight
| NPS | A | C | G | H | I | J | W |
| inch | inch | inch | No. of holes | inch | inch | kg/pc | |
| mm | mm | mm | mm | mm | |||
| 1/2 | 3.5 | 0.44 | 1.38 | 4 | 0.62 | 2.38 | 0.42 |
| 88.9 | 11.2 | 35.1 | 15.7 | 60.45 | |||
| 3/4 | 3.88 | 0.5 | 1.69 | 4 | 0.62 | 2.75 | 0.61 |
| 98.6 | 12.7 | 42.9 | 15.7 | 69.85 | |||
| 1 | 4.25 | 0.56 | 2 | 4 | 0.62 | 3.12 | 0.86 |
| 108 | 14.2 | 50.8 | 15.7 | 79.25 | |||
| 1-1/4 | 4.62 | 0.62 | 2.5 | 4 | 0.62 | 3.5 | 1.17 |
| 117.3 | 15.7 | 63.5 | 15.7 | 88.9 | |||
| 1-1/2 | 5 | 0.69 | 2.88 | 4 | 0.62 | 3.88 | 1.53 |
| 127 | 17.5 | 73.15 | 15.7 | 98.6 | |||
| 2 | 6 | 0.75 | 3.62 | 4 | 0.75 | 4.75 | 2.42 |
| 152.4 | 19.1 | 91.9 | 19.1 | 120.7 | |||
| 2-1/2 | 7 | 0.88 | 4.12 | 4 | 0.75 | 5.5 | 3.94 |
| 177.8 | 22.4 | 104.6 | 19.1 | 139.7 | |||
| 3 | 7.5 | 0.94 | 5 | 4 | 0.75 | 6 | 4.93 |
| 190.5 | 23.9 | 127 | 19.1 | 152.4 | |||
| 3-1/2 | 8.5 | 0.94 | 5.5 | 8 | 0.75 | 7 | 6.17 |
| 215.9 | 23.9 | 139.7 | 19.1 | 177.8 | |||
| 4 | 9 | 0.94 | 6.19 | 8 | 0.75 | 7.5 | 7 |
| 228.6 | 23.9 | 157.2 | 19.1 | 190.5 | |||
| 5 | 10 | 0.94 | 7.31 | 8 | 0.88 | 8.5 | 8.63 |
| 254 | 23.9 | 185.7 | 22.4 | 215.9 | |||
| 6 | 11 | 1 | 8.5 | 8 | 0.88 | 9.5 | 11.3 |
| 279.4 | 25.4 | 215.9 | 22.4 | 241.3 | |||
| 8 | 13.5 | 1.12 | 10.62 | 8 | 0.88 | 11.75 | 19.6 |
| 342.9 | 28.4 | 269.7 | 22.4 | 298.5 | |||
| 10 | 16 | 1.19 | 12.75 | 12 | 1 | 14.25 | 28.8 |
| 406.4 | 30.2 | 323.9 | 25.4 | 362 | |||
| 12 | 19 | 1.25 | 15 | 12 | 1 | 17 | 43.2 |
| 482.6 | 31.75 | 381 | 25.4 | 431.8 | |||
| 14 | 21 | 1.38 | 16.25 | 12 | 1.12 | 18.75 | 58.1 |
| 533.4 | 35.1 | 412.8 | 28.4 | 476.3 | |||
| 16 | 23.5 | 1.44 | 18.5 | 16 | 1.12 | 21.25 | 76 |
| 596.9 | 36.6 | 469.9 | 28.4 | 539.8 | |||
| 18 | 25 | 1.56 | 21 | 16 | 1.25 | 22.75 | 93.7 |
| 635 | 39.6 | 533.4 | 31.75 | 577.9 | |||
| 20 | 27.5 | 1.69 | 23 | 20 | 1.25 | 25 | 122 |
| 698.5 | 42.9 | 584.2 | 31.75 | 635 | |||
| 24 | 32 | 1.88 | 27.25 | 20 | 1.38 | 29.5 | 185 |
| 812.8 | 47.8 | 692.2 | 35.1 | 749.3 |
ASME B16.5 Blind Flanges Dimensions & Stud Bolts
Dimensions are in millimeters unless otherwise indicated.
Class | 150 | 300 | 600 | 900 | 1500 | 2500 |
DIA D | 190 | 210 | 210 | 240 | 265 | 305 |
DIA K | 152.4 | 168.3 | 168.3 | 190.5 | 205 | 230 |
DIA G | 127 | 127 | 127 | 127 | 127 | 127 |
Length B | 23.9 | 28.6 | 38.2 | 44.5 | 54.1 | 73.1 |
NO. L | 4 | 8 | 8 | 8 | 8 | 8 |
DIA L | 19.1 | 22.2 | 22.2 | 25.4 | 31.8 | 34.9 |
Stud Bolts Diameter x Length | ||||||
DIA (In) | 5/8 | 3/4 | 3/4 | 7/8 | 1.1/8 | 1.1/4 |
Length (mm) | 90 | 110 | 125 | 145 | 180 | 220 |
Blind Flange Inspection
For our client get good and profession purchase experience, we will do the test and inspection after goods done to make sure when our client receive the right and satisfactory products. Here below are some ASME B16.5 blind flange of Stainless Steel 304L for your reference:
Sincerely awaiting for your consult.
What is ASME B16.5 Blind Flange
ASME B16.5 Blind flange is a flange without a hole in the middle, used to seal pipeline openings. The formal name of blind plate is flange cover, which plays the same function as the head and pipe cap. However, blind plate sealing is a detachable sealing device, while head sealing is not detachable.
The sealing surfaces are various types of blind flanges, such as flat face, tenon groove face and ring connection surfaces.
ASME B16.5 Blind flange materials have carbon steel blind flange, low temperature steel blind flange and stainless steel blind flange.
Specification of ASME B16.5 Blind Flange
ASME B16.5 standard covers pressure temperature ratings, materials, dimensions, tolerances, marking, testing and methods of designating openings for pipe flanges and flanged fittings. Such as weld neck flanges, slip-on flanges, socket weld flanges, threaded flanges, blind flanges, lap joint flanges and flangolets.
| Sealing Face | RF, FF, FTJ |
| Size Range | 1/2"- 24"/ DN15-DN600 |
| Pressure Rating | Class 150, 300, 600, 900, 1500, 2500lb |
| Standard | ASME / ANSI B16.5, ASME B16.47 Series A/B |
| Carbon Steel | ASTM A105 / A105N |
| Low Temp Carbon Steel | ASTM A350 LF2/LF3 |
| Pipeline Steel | ASTM A694 F42 / 46 / 56 / 60 / 65 |
ASME B16.5 Blind Flange Class 150 Dimension & Weight
| NPS | A | C | G | H | I | J | W |
| inch | inch | inch | No. of holes | inch | inch | kg/pc | |
| mm | mm | mm | mm | mm | |||
| 1/2 | 3.5 | 0.44 | 1.38 | 4 | 0.62 | 2.38 | 0.42 |
| 88.9 | 11.2 | 35.1 | 15.7 | 60.45 | |||
| 3/4 | 3.88 | 0.5 | 1.69 | 4 | 0.62 | 2.75 | 0.61 |
| 98.6 | 12.7 | 42.9 | 15.7 | 69.85 | |||
| 1 | 4.25 | 0.56 | 2 | 4 | 0.62 | 3.12 | 0.86 |
| 108 | 14.2 | 50.8 | 15.7 | 79.25 | |||
| 1-1/4 | 4.62 | 0.62 | 2.5 | 4 | 0.62 | 3.5 | 1.17 |
| 117.3 | 15.7 | 63.5 | 15.7 | 88.9 | |||
| 1-1/2 | 5 | 0.69 | 2.88 | 4 | 0.62 | 3.88 | 1.53 |
| 127 | 17.5 | 73.15 | 15.7 | 98.6 | |||
| 2 | 6 | 0.75 | 3.62 | 4 | 0.75 | 4.75 | 2.42 |
| 152.4 | 19.1 | 91.9 | 19.1 | 120.7 | |||
| 2-1/2 | 7 | 0.88 | 4.12 | 4 | 0.75 | 5.5 | 3.94 |
| 177.8 | 22.4 | 104.6 | 19.1 | 139.7 | |||
| 3 | 7.5 | 0.94 | 5 | 4 | 0.75 | 6 | 4.93 |
| 190.5 | 23.9 | 127 | 19.1 | 152.4 | |||
| 3-1/2 | 8.5 | 0.94 | 5.5 | 8 | 0.75 | 7 | 6.17 |
| 215.9 | 23.9 | 139.7 | 19.1 | 177.8 | |||
| 4 | 9 | 0.94 | 6.19 | 8 | 0.75 | 7.5 | 7 |
| 228.6 | 23.9 | 157.2 | 19.1 | 190.5 | |||
| 5 | 10 | 0.94 | 7.31 | 8 | 0.88 | 8.5 | 8.63 |
| 254 | 23.9 | 185.7 | 22.4 | 215.9 | |||
| 6 | 11 | 1 | 8.5 | 8 | 0.88 | 9.5 | 11.3 |
| 279.4 | 25.4 | 215.9 | 22.4 | 241.3 | |||
| 8 | 13.5 | 1.12 | 10.62 | 8 | 0.88 | 11.75 | 19.6 |
| 342.9 | 28.4 | 269.7 | 22.4 | 298.5 | |||
| 10 | 16 | 1.19 | 12.75 | 12 | 1 | 14.25 | 28.8 |
| 406.4 | 30.2 | 323.9 | 25.4 | 362 | |||
| 12 | 19 | 1.25 | 15 | 12 | 1 | 17 | 43.2 |
| 482.6 | 31.75 | 381 | 25.4 | 431.8 | |||
| 14 | 21 | 1.38 | 16.25 | 12 | 1.12 | 18.75 | 58.1 |
| 533.4 | 35.1 | 412.8 | 28.4 | 476.3 | |||
| 16 | 23.5 | 1.44 | 18.5 | 16 | 1.12 | 21.25 | 76 |
| 596.9 | 36.6 | 469.9 | 28.4 | 539.8 | |||
| 18 | 25 | 1.56 | 21 | 16 | 1.25 | 22.75 | 93.7 |
| 635 | 39.6 | 533.4 | 31.75 | 577.9 | |||
| 20 | 27.5 | 1.69 | 23 | 20 | 1.25 | 25 | 122 |
| 698.5 | 42.9 | 584.2 | 31.75 | 635 | |||
| 24 | 32 | 1.88 | 27.25 | 20 | 1.38 | 29.5 | 185 |
| 812.8 | 47.8 | 692.2 | 35.1 | 749.3 |
ASME B16.5 Blind Flanges Dimensions & Stud Bolts
Dimensions are in millimeters unless otherwise indicated.
Class | 150 | 300 | 600 | 900 | 1500 | 2500 |
DIA D | 190 | 210 | 210 | 240 | 265 | 305 |
DIA K | 152.4 | 168.3 | 168.3 | 190.5 | 205 | 230 |
DIA G | 127 | 127 | 127 | 127 | 127 | 127 |
Length B | 23.9 | 28.6 | 38.2 | 44.5 | 54.1 | 73.1 |
NO. L | 4 | 8 | 8 | 8 | 8 | 8 |
DIA L | 19.1 | 22.2 | 22.2 | 25.4 | 31.8 | 34.9 |
Stud Bolts Diameter x Length | ||||||
DIA (In) | 5/8 | 3/4 | 3/4 | 7/8 | 1.1/8 | 1.1/4 |
Length (mm) | 90 | 110 | 125 | 145 | 180 | 220 |
Blind Flange Inspection
For our client get good and profession purchase experience, we will do the test and inspection after goods done to make sure when our client receive the right and satisfactory products. Here below are some ASME B16.5 blind flange of Stainless Steel 304L for your reference:
Sincerely awaiting for your consult.
