Stainless Steel Blind Flange is a type of pipe fitting that is made up of stainless steel. There are different types of flanges made out of different material grades. The material grades correspond to the mechanical properties of the flanges. The blind flange is a special type of flange in that it does not connect two pieces of pipes together but it ends the connection at one end of the pipe. The BLRF Flanges are raised face blind flanges. These raised faces enable the flanges be fitted with other raised face components with bolting for temporary sealing or by welding for permanent sealing of pipes. The ASME B16.5 blind flange belongs to the range of ½ inches to 24 inches diameter flanges. There are pressure classes ranging from 150 to 2500 in this standard. The Carbon Steel Blind Flanges are also used in applications with carbon steel pipes.
| Standard Specification | Stainless Steel Blind Flange |
|---|---|
| Use Of SS Blind Flange | Stainless Steel Blind Flange Has A RF (Raised Face) Which Allows For Much Grip At Installation. |
| EN Standard | 6Bar/ 10Bar/ 16Bar/ 25Bar/ 40Bar |
| Manufacturer of | Forged/ Threaded/ Screwed / Plate |
| Manufacturer Pressure Class | Class 150 (lb) up to 24" Class 300 (lb) up to 20" Class 600 (lb) up to 20" Class 900 (lb) up to 16" Class 1500 (lb) up to 10" Class 2500 (lb) up to 8" |
| DIN Standard | PN6/ PN10/ PN16/ PN25/ PN40/ PN64 |
| Face Type Of ASME B16.5 Blind Flange | Raised Face Blind Flanges Flat Face Blind Flanges RTJ Blind Flanges Slip On Blind Flanges |
| Size Diameters | 1/2”/ 2”/ 3”/ 4”/ 6”/ 8”/ 10”/ 12” to 24”. |
| JIS Standard | 5K/ 10K/ 16K 20K/ 30K/ 40K/ 63K |
| Test Certificates | EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc |
| Production Technique | Forged/ Heat treated and machined |
| Flange Test | Hydrostatic testing machine/ UI trasonic flaw detector/ X-ray detector/ Direct-reading Spectrograph/ Magnetic particle detector |
| Flange Equipment | Pushing Machine/ electric bevelling machine/ Press machine/ Bending machine/ Sand-blasting machine etc |
| Coating | Anti-rust Paint/ Zinc Plated/ Oil Black Paint/ Yellow Transparent/ Cold and Hot Dip Galvanized |
| Other Standard | B16.47 Series A & B/ B16.48, BS4504/ GOST |
| Dimensions | ASME B16.47/ MSS SP-44/ ASME B16.5/ EN 1092-1/ AWWA C207/ BS10 |
| Application | Bitumen upgraders Heavy oil refineries. Nuclear power (mostly seamless). Petrochemicals and acids. |
| UNI Standard | 6 Bar/ 10 Bar/ 16 Bar/ 25 Bar/ 40 Bar |
| Supporting Material | Gasket/ Ring Joint/ Flange Bolts |
| Size | 1/2 to 34", (Customized Up to 48 inch) |
| Wall Thickness | Sch 10S/ Sch 20/ Sch 30/ Sch 40/ Sch 60/ Sch 80/ Sch 100/ Sch 120/ Sch 140. Sch 160 to SCH 180 |
| NPS | (D) | (G) | (K) | (T) |
|---|---|---|---|---|
| 1/2 | 90 | 34.9 | 60.3 | 9.6 |
| 3/4 | 100 | 42.9 | 69.9 | 11.2 |
| 1 | 110 | 50.8 | 79.4 | 12.7 |
| 1-1/4 | 115 | 63.5 | 88.9 | 14.3 |
| 1-1/2 | 125 | 73.0 | 98.4 | 15.9 |
| 2 | 150 | 92.1 | 120.7 | 17.5 |
| 2-1/2 | 180 | 104.8 | 139.7 | 20.7 |
| 3 | 190 | 127.0 | 152.4 | 22.3 |
| 3-1/2 | 215 | 139.7 | 177.8 | 22.3 |
| 4 | 230 | 157.2 | 190.5 | 22.3 |
| 5 | 255 | 185.7 | 215.9 | 22.3 |
| 6 | 280 | 215.9 | 241.3 | 23.9 |
| 8 | 345 | 269.9 | 298.5 | 27.0 |
| 10 | 405 | 323.8 | 362.0 | 28.6 |
| 12 | 485 | 381.0 | 431.8 | 30.2 |
| 14 | 535 | 412.8 | 476.3 | 33.4 |
| 16 | 595 | 469.9 | 539.8 | 35.0 |
| 18 | 635 | 533.4 | 577.9 | 38.1 |
| 20 | 700 | 584.2 | 635.0 | 41.3 |
| 22 | 750 | 641.4 | 692.2 | 44.5 |
| 24 | 815 | 692.2 | 749.3 | 46.1 |
| Tapped Blind Of Size | Threaded Hole |
|---|---|
| 3/8" | 10.5 |
| 1/2" | 13.5 |
| 3/4" | 14.0 |
| 1" | 17.5 |
| 1-1/4" | 18.1 |
| 1-1/2" | 18.3 |
| 2" | 19.4 |
| (Normal Size Of Steel Pipe) In Inch | Outer Daimeter Of (A) |
WT Of (B) |
RF Daimeter Of (C) |
(D) (B.C.D.) |
# BLRF Flanges Bolts Holes |
Daimeter Of BLRF Bolt Holes |
Weight In Kilogram (KG) |
|---|---|---|---|---|---|---|---|
| 1/2 | 3-1/2 | 7/16 | 1-3/8 | 2-3/8 | 4 | 5/8 | 2 |
| 3/4 | 3-7/8 | 1/2 | 1-11/16 | 2-3/4 | 4 | 5/8 | 2 |
| 1 | 4-1/4 | 9/16 | 2 | 3-1/8 | 4 | 5/8 | 2 |
| 1-1/4 | 4-5/8 | 5/8 | 2-1/2 | 3-1/2 | 4 | 5/8 | 3 |
| 1-1/2 | 5 | 11/16 | 2-7/8 | 3-7/8 | 4 | 5/8 | 3 |
| 2 | 6 | 3/4 | 3-5/8 | 4-3/4 | 4 | 3/4 | 4 |
| 2-1/2 | 7 | 7/8 | 4-1/8 | 5-1/2 | 4 | 3/4 | 7 |
| 3 | 7-1/2 | 15/16 | 5 | 6 | 4 | 3/4 | 9 |
| 3-1/2 | 8-1/2 | 15/16 | 5-1/2 | 7 | 8 | 3/4 | 13 |
| 4 | 9 | 15/16 | 6-3/16 | 7-1/2 | 8 | 3/4 | 17 |
| 5 | 10 | 15/16 | 7-5/16 | 8-1/2 | 8 | 7/8 | 20 |
| 6 | 11 | 1 | 8-1/2 | 9-1/2 | 8 | 7/8 | 27 |
| 8 | 13-1/2 | 1-1/8 | 10-5/8 | 11-3/4 | 8 | 7/8 | 47 |
| 10 | 16 | 1-3/16 | 12-3/4 | 14-1/4 | 12 | 1 | 67 |
| 12 | 19 | 1-1/4 | 15 | 17 | 12 | 1 | 123 |
| 14 | 21 | 1-3/8 | 16-1/4 | 18-3/4 | 12 | 1-1/8 | 139 |
| 16 | 23-1/2 | 1-7/16 | 18-1/2 | 21-1/4 | 16 | 1-1/8 | 187 |
| 18 | 25 | 1-9/16 | 21 | 22-3/4 | 16 | 1-1/4 | 217 |
| 20 | 27-1/2 | 1-11/16 | 23 | 25 | 20 | 1-1/4 | 283 |
| 24 | 32 | 1-7/8 | 27-1/4 | 29-1/2 | 20 | 1-3/8 | 415 |
| (Normal Size Of Steel Pipe) In Inch | Outer Daimeter Of (A) |
WT (B) |
RF Daimeter Of (C) |
(D) (B.C.D.) |
# BLRF Flange Bolts Holes |
Daimeter Of BLRF Bolt Holes |
Weight in Kg (Kilogram) |
|---|---|---|---|---|---|---|---|
| 1/2 | 3-3/4 | 9/16 | 1-3/8 | 2-5/8 | 4 | 5/8 | 2 |
| 3/4 | 4-5/8 | 5/8 | 1-11/16 | 3-1/4 | 4 | 3/4 | 3 |
| 1 | 4-7/8 | 11/16 | 2 | 3-1/2 | 4 | 3/4 | 4 |
| 1-1/4 | 5-1/4 | 3/4 | 2-1/2 | 3-7/8 | 4 | 3/4 | 6 |
| 1-1/2 | 6-1/8 | 13/16 | 2-7/8 | 4-1/2 | 4 | 7/8 | 7 |
| 2 | 6-1/2 | 7/8 | 3-5/8 | 5 | 8 | 3/4 | 8 |
| 2-1/2 | 7-1/2 | 1 | 4-1/8 | 5-7/8 | 8 | 7/8 | 12 |
| 3 | 8-1/4 | 1-1/8 | 5 | 6-5/8 | 8 | 7/8 | 16 |
| 3-1/2 | 9 | 1-3/16 | 5-1/2 | 7-1/4 | 8 | 7/8 | 21 |
| 4 | 10 | 1-1/4 | 6-3/16 | 7-7/8 | 8 | 7/8 | 28 |
| 5 | 11 | 1-3/8 | 7-5/16 | 9-1/4 | 8 | 7/8 | 37 |
| 6 | 12-1/2 | 1-7/16 | 8-1/2 | 10-5/8 | 12 | 7/8 | 48 |
| 8 | 15 | 1-5/8 | 10-5/8 | 13 | 12 | 1 | 79 |
| 10 | 17-1/2 | 1-7/8 | 12-3/4 | 15-1/4 | 16 | 1-1/8 | 122 |
| 12 | 20-1/2 | 2 | 15 | 17-3/4 | 16 | 1-1/4 | 183 |
| 14 | 23 | 2-1/8 | 16-1/4 | 20-1/4 | 20 | 1-1/4 | 241 |
| 16 | 25-1/2 | 2-1/4 | 18-1/2 | 22-1/2 | 20 | 1-3/8 | 315 |
| 18 | 28 | 2-3/8 | 21 | 24-3/4 | 24 | 1-3/8 | 414 |
| 20 | 30-1/2 | 2-1/2 | 23 | 27 | 24 | 1-3/8 | 515 |
| 24 | 36 | 2-3/4 | 27-1/4 | 32 | 24 | 1-5/8 | 800 |
| (NPS) In Inch | Outer Daimeter | BLRF (Bolts Circle) | (Raised Face) | Raised Face (RF) | WT Of Raised Face | FF Of (T2) | BLRF Bolts Holes | Number Of BLRF Bolts Holes |
|---|---|---|---|---|---|---|---|---|
| 1/2 | 3.75 | 2.62 | 0.12 | .250 | 0.81 | 0.56 | 0.62 | 4 |
| 3/4 | 4.62 | 3.25 | 0.12 | .250 | 0.87 | 0.62 | 0.75 | 4 |
| 1 | 4.88 | 3.50 | 0.12 | .250 | 0.94 | 0.69 | 0.75 | 4 |
| 1-1/4 | 5.25 | 3.88 | 0.19 | .250 | 1.06 | 0.81 | 0.75 | 4 |
| 1-1/2 | 6.12 | 4.50 | 0.25 | .250 | 1.13 | 0.88 | 0.88 | 4 |
| 2 | 6.50 | 5.00 | 0.31 | .250 | 1.25 | 1.00 | 0.75 | 8 |
| 2-1/2 | 7.50 | 5.88 | 0.31 | .250 | 1.37 | 1.12 | 0.88 | 8 |
| 3 | 8.25 | 6.62 | 0.38 | .250 | 1.50 | 1.25 | 0.88 | 8 |
| 3-1/2 | 9.00 | 7.25 | 0.38 | .250 | 1.63 | 1.38 | 1.00 | 8 |
| 4 | 10.00 | 7.88 | 0.44 | .250 | 1.63 | 1.38 | 1.00 | 8 |
| 5 | 11.00 | 9.25 | 0.44 | .250 | 1.75 | 1.50 | 1.00 | 8 |
| 6 | 12.50 | 10.62 | 0.50 | .250 | 1.87 | 1.62 | 1.00 | 12 |
| 8 | 15.00 | 13.00 | 0.50 | .250 | 2.13 | 1.88 | 1.12 | 12 |
| 10 | 17.50 | 15.25 | 0.50 | .250 | 2.37 | 2.12 | 1.25 | 16 |
| 12 | 20.50 | 17.75 | 0.50 | .250 | 2.50 | 2.25 | 1.38 | 16 |
| 14 | 23.00 | 20.25 | 0.50 | .250 | 2.63 | 2.38 | 1.38 | 20 |
| 16 | 25.50 | 22.50 | 0.50 | .250 | 2.75 | 2.50 | 1.50 | 20 |
| 18 | 28.00 | 24.75 | 0.50 | .250 | 2.87 | 2.62 | 1.50 | 24 |
| 20 | 30.50 | 27.00 | 0.50 | .250 | 3.00 | 2.75 | 1.62 | 24 |
| 22 | 33.00 | 29.25 | 0.50 | .250 | 3.13 | 2.88 | 1.75 | 24 |
| 24 | 36.00 | 32.00 | 0.50 | .250 | 3.25 | 3.00 | 1.88 | 24 |
| (NPS) In Inch | (Outer Daimeter) | BLRF (Bolts Circle) | Raised | (Raised Face) | Thickness Of (RF) | Flat Face Of (T2) | BLRF Bolt Holes | No. Of BLRF Bolts Holes |
|---|---|---|---|---|---|---|---|---|
| 3 | 9.50 | 7.50 | 5.00 | .250 | 1.75 | 1.50 | 1.00 | 8 |
| 4 | 11.50 | 9.25 | 6.19 | .250 | 2.00 | 1.75 | 1.25 | 8 |
| 5 | 13.75 | 11.00 | 7.31 | .250 | 3.25 | 3.00 | 1.38 | 8 |
| 6 | 15.00 | 12.50 | 8.50 | .250 | 2.44 | 2.19 | 1.25 | 12 |
| 8 | 18.50 | 15.50 | 10.63 | .250 | 2.75 | 2.50 | 1.50 | 12 |
| 10 | 21.50 | 18.50 | 12.75 | .250 | 3.00 | 2.75 | 1.50 | 16 |
| 12 | 24.00 | 21.00 | 15.00 | .250 | 3.38 | 3.13 | 1.50 | 20 |
| 14 | 25.25 | 22.00 | 16.25 | .250 | 3.63 | 3.38 | 1.63 | 20 |
| 16 | 27.75 | 24.25 | 18.50 | .250 | 3.75 | 3.50 | 1.75 | 20 |
| 18 | 31.00 | 27.00 | 21.00 | .250 | 4.25 | 4.00 | 2.00 | 20 |
| 20 | 33.75 | 29.50 | 23.00 | .250 | 4.50 | 4.25 | 2.13 | 20 |
| 24 | 41.00 | 35.50 | 27.25 | .250 | 5.75 | 5.50 | 2.63 | 20 |
| (NPS) In Inch | (Outer Daimeter) | BLRF (Bolts Circle) | Raised | (Raised Face) | Thickness Of (RF) | Flat Face Of (T2) | BLRF Bolt Holes | No. Of BLRF Bolts Holes |
|---|---|---|---|---|---|---|---|---|
| 3 | 9.50 | 7.50 | 5.00 | .250 | 1.75 | 1.50 | 1.00 | 8 |
| 4 | 11.50 | 9.25 | 6.19 | .250 | 2.00 | 1.75 | 1.25 | 8 |
| 5 | 13.75 | 11.00 | 7.31 | .250 | 3.25 | 3.00 | 1.38 | 8 |
| 6 | 15.00 | 12.50 | 8.50 | .250 | 2.44 | 2.19 | 1.25 | 12 |
| 8 | 18.50 | 15.50 | 10.63 | .250 | 2.75 | 2.50 | 1.50 | 12 |
| 10 | 21.50 | 18.50 | 12.75 | .250 | 3.00 | 2.75 | 1.50 | 16 |
| 12 | 24.00 | 21.00 | 15.00 | .250 | 3.38 | 3.13 | 1.50 | 20 |
| 14 | 25.25 | 22.00 | 16.25 | .250 | 3.63 | 3.38 | 1.63 | 20 |
| 16 | 27.75 | 24.25 | 18.50 | .250 | 3.75 | 3.50 | 1.75 | 20 |
| 18 | 31.00 | 27.00 | 21.00 | .250 | 4.25 | 4.00 | 2.00 | 20 |
| 20 | 33.75 | 29.50 | 23.00 | .250 | 4.50 | 4.25 | 2.13 | 20 |
| 24 | 41.00 | 35.50 | 27.25 | .250 | 5.75 | 5.50 | 2.63 | 20 |
| NPS | Outer Daimeter | (WT) | Hub Daimeter | BLRF Bolts Circle Daimeter | Bolts Holes Daimeter | Number Of BLRF Bolts | Bolts Daimeter In (Inches) | Weight in kilogram (KG) | ||
|---|---|---|---|---|---|---|---|---|---|---|
| inches | (dn) | (O) | (C) | (X) | (BC) | (BH) | (BN) | (BD) | (KG/PCS) | (LB/PCS) |
| 1/2 | 15 | 120.7 | 22.4 | 38.1 | 82.6 | 22.4 | 4 | 3/4 | 1.9 | 4.2 |
| 3/4 | 20 | 130 | 25.4 | 44.5 | 88.9 | 22.4 | 4 | 3/4 | 2.7 | 6 |
| 1 | 25 | 149.4 | 28.4 | 52.3 | 101.6 | 25.4 | 4 | 7/8 | 3.7 | 8.1 |
| 1-1/4 | 32 | 158.8 | 28.4 | 63.5 | 111.3 | 25.4 | 4 | 7/8 | 4.3 | 9.5 |
| 1-1/2 | 40 | 177.8 | 31.8 | 69.9 | 124 | 28.4 | 4 | 1 | 5.9 | 13 |
| 2 | 50 | 215.9 | 38.1 | 104.6 | 165.1 | 25.4 | 8 | 7/8 | 11.3 | 24.9 |
| 2-1/2 | 65 | 244.3 | 41.1 | 124 | 190.5 | 28.4 | 8 | 1 | 16 | 35.2 |
| 3 | 80 | 266.7 | 47.8 | 133.4 | 190.5 | 25.4 | 8 | 7/8 | 19.5 | 43 |
| 4 | 100 | 311.2 | 53.8 | 162.1 | 235 | 31.8 | 8 | 1 1/8 | 33 | 72.8 |
| 5 | 125 | 374.7 | 73.2 | 196.9 | 279.4 | 35.1 | 8 | 1 1/4 | 60 | 132 |
| 6 | 150 | 393.7 | 82.6 | 228.6 | 317.5 | 31.8 | 12 | 1 1/8 | 75 | 165 |
| 8 | 200 | 482.6 | 91.9 | 292.1 | 393.7 | 38.1 | 12 | 1 3/8 | 125 | 275 |
| 10 | 250 | 584.2 | 108 | 368.3 | 469.9 | 38.1 | 16 | 1 3/8 | 215 | 474 |
| 12 | 300 | 673.1 | 124 | 450.9 | 533.4 | 38.1 | 20 | 1 3/8 | 316 | 697 |
| 14 | 350 | 749.3 | 133.4 | 495.3 | 558.8 | 41.1 | 20 | 1 1/2 | ||
| 16 | 400 | 825.5 | 146.1 | 552.5 | 616 | 44.5 | 20 | 1 5/8 | ||
| 18 | 450 | 914.4 | 162.1 | 596.9 | 685.8 | 50.8 | 20 | 1 7/8 | ||
| 20 | 500 | 984.3 | 177.8 | 641.4 | 749.3 | 53.8 | 20 | 2 | ||
| 24 | 600 | 1168.4 | 203.2 | 762 | 901.7 | 66.5 | 20 | 2 1/2 | ||
| NPS | Outer Daimeter | (WT) | Hub Daimeter | BLRF Bolts Circle Daimeter | Bolts Holes Daimeter | Number Of BLRF Bolts | Bolts Daimeter In (Inches) | Weight in kilogram (KG) | ||
|---|---|---|---|---|---|---|---|---|---|---|
| inches | (dn) | (O) | (C) | (X) | (BC) | (BH) | (BN) | (BD) | (KG/PCS) | (LB/PCS) |
| 1/2 | 15 | 120.7 | 22.4 | 38.1 | 82.6 | 22.4 | 4 | 3/4 | 1.9 | 4.2 |
| 3/4 | 20 | 130 | 25.4 | 44.5 | 88.9 | 22.4 | 4 | 3/4 | 2.7 | 6 |
| 1 | 25 | 149.4 | 28.4 | 52.3 | 101.6 | 25.4 | 4 | 7/8 | 3.7 | 8.1 |
| 1-1/4 | 32 | 158.8 | 28.4 | 63.5 | 111.3 | 25.4 | 4 | 7/8 | 4.3 | 9.5 |
| 1-1/2 | 40 | 177.8 | 31.8 | 69.9 | 124 | 28.4 | 4 | 1 | 5.9 | 13 |
| 2 | 50 | 215.9 | 38.1 | 104.6 | 165.1 | 25.4 | 8 | 7/8 | 11.3 | 24.9 |
| 2-1/2 | 65 | 244.3 | 41.1 | 124 | 190.5 | 28.4 | 8 | 1 | 16 | 35.2 |
| 3 | 80 | 266.7 | 47.8 | 133.4 | 190.5 | 25.4 | 8 | 7/8 | 19.5 | 43 |
| 4 | 100 | 311.2 | 53.8 | 162.1 | 235 | 31.8 | 8 | 1 1/8 | 33 | 72.8 |
| 5 | 125 | 374.7 | 73.2 | 196.9 | 279.4 | 35.1 | 8 | 1 1/4 | 60 | 132 |
| 6 | 150 | 393.7 | 82.6 | 228.6 | 317.5 | 31.8 | 12 | 1 1/8 | 75 | 165 |
| 8 | 200 | 482.6 | 91.9 | 292.1 | 393.7 | 38.1 | 12 | 1 3/8 | 125 | 275 |
| 10 | 250 | 584.2 | 108 | 368.3 | 469.9 | 38.1 | 16 | 1 3/8 | 215 | 474 |
| 12 | 300 | 673.1 | 124 | 450.9 | 533.4 | 38.1 | 20 | 1 3/8 | 316 | 697 |
| 14 | 350 | 749.3 | 133.4 | 495.3 | 558.8 | 41.1 | 20 | 1 1/2 | ||
| 16 | 400 | 825.5 | 146.1 | 552.5 | 616 | 44.5 | 20 | 1 5/8 | ||
| 18 | 450 | 914.4 | 162.1 | 596.9 | 685.8 | 50.8 | 20 | 1 7/8 | ||
| 20 | 500 | 984.3 | 177.8 | 641.4 | 749.3 | 53.8 | 20 | 2 | ||
| 24 | 600 | 1168.4 | 203.2 | 762 | 901.7 | 66.5 | 20 | 2 1/2 | ||
| NPS | Outer Daimeter | Minimum (WT) | BLRF Bolts Circle Daimeter | Bolts Holes Daimeter | Number Of BLRF Bolts | Daimeter of Bolts In (inch) | Weight In Kilogram | Weight In LB | |
|---|---|---|---|---|---|---|---|---|---|
| Inches | (dn) | (O) | (C) | (BC) | (BH) | (BN) | (BD) | ||
| 1/2 | 15 | 133.4 | 30.2 | 88.9 | 22.4 | 4 | 3/4 | 3 | 7 |
| 3/4 | 20 | 139.7 | 31.8 | 95.3 | 22.4 | 4 | 3/4 | 4.5 | 10 |
| 1 | 25 | 158.8 | 35.1 | 108 | 25.4 | 4 | 7/8 | 5 | 12 |
| 1-1/4 | 32 | 184.2 | 38.1 | 130 | 28.4 | 4 | 1 | 8 | 18 |
| 1-1/2 | 40 | 203.2 | 44.5 | 146.1 | 31.8 | 4 | 1 1/8 | 11 | 25 |
| 2 | 50 | 235 | 50.8 | 171.5 | 28.4 | 8 | 1 | 17 | 38 |
| 2-1/2 | 65 | 266.7 | 57.2 | 196.9 | 31.8 | 8 | 1 1/8 | 25 | 55 |
| 3 | 80 | 304.8 | 66.5 | 228.6 | 35.1 | 8 | 1 1/4 | 39 | 86 |
| 4 | 100 | 355.6 | 76.2 | 273.1 | 41.1 | 8 | 1 1/2 | 60 | 133 |
| 5 | 125 | 419.1 | 91.9 | 323.9 | 47.8 | 8 | 1 3/4 | 101 | 223 |
| 6 | 150 | 482.6 | 108 | 368.3 | 53.8 | 8 | 2 | 156 | 345 |
| 8 | 200 | 552.5 | 127 | 438.2 | 53.8 | 12 | 2 | 242 | 533 |
| 10 | 250 | 673.1 | 165.1 | 539.8 | 66.5 | 12 | 2 1/2 | 465 | 1023 |
| 12 | 300 | 762 | 184.2 | 619.3 | 73.2 | 12 | 2 3/4 | 665 | 1463 |
| Diameter Of PN16 Blank Flange | Flange | Screws/ Threaded | Weight In Kilogram | ||||
| (D) | (b) | (k) | (Number) | (Thread) | (d2) | (Shape B) | |
| 15 | 95 | 14 | 65 | 4 | M 12 | 14 | |
| 20 | 105 | 16 | 75 | 1,01 | |||
| 25 | 115 | 16 | 85 | 1,23 | |||
| 32 | 140 | 16 | 100 | M 16 | 18 | 1,8 | |
| 40 | 150 | 16 | 110 | 2,09 | |||
| 50 | 165 | 18 | 125 | 2,88 | |||
| 65 | 185 | 18 | 145 | 3,66 | |||
| 80 | 200 | 20 | 160 | 8 | 4,77 | ||
| 100 | 220 | 20 | 180 | 5,65 | |||
| 125 | 250 | 22 | 210 | 8,42 | |||
| 150 | 285 | 22 | 240 | M 20 | 22 | 10,4 | |
| 200 | 340 | 24 | 295 | 12 | 16,1 | ||
| 250 | 405 | 26 | 355 | M 24 | 26 | 24,9 | |
| 300 | 460 | 28 | 410 | 35,1 | |||
| 350 | 520 | 30 | 470 | 16 | 47,8 | ||
| 400 | 580 | 32 | 525 | M 27 | 30 | 63,5 | |
| 500 | 715 | 36 | 650 | 20 | M 30 | 33 | 102 |
| Normal Size Of Steel Pipe In Inches | Size In Millimeter | BLRF Flanges Outer Daimeter (O.D.) In (MM) |
BLRF Flanges Wall Thickness Of (D) (In M) |
(ANSI B16.5 Blind Flanges) |
|---|---|---|---|---|
| 1/2 | 15 | 88.9 | 11.2 | 0.4 |
| 3/4 | 20 | 98.6 | 12.7 | 0.6 |
| 1 | 25 | 108 | 14.2 | 0.9 |
| 1 1/4 | 32 | 117.3 | 15.7 | 1.2 |
| 1 1/2 | 40 | 127 | 17.5 | 1.5 |
| 2 | 50 | 152.4 | 19.1 | 2.4 |
| 2 1/2 | 65 | 177.8 | 22.4 | 3.9 |
| 3 | 80 | 190.5 | 23.9 | 4.9 |
| 3 1/2 | 90 | 215.9 | 23.9 | 6.2 |
| 4 | 100 | 228.6 | 23.9 | 7.0 |
| 5 | 125 | 254 | 23.9 | 8.6 |
| 6 | 150 | 279.4 | 25.4 | 11.3 |
| 8 | 200 | 342.9 | 28.4 | 19.6 |
| 10 | 250 | 406.4 | 30.2 | 28.6 |
| 12 | 300 | 482.6 | 31.8 | 43.2 |
| 14 | 350 | 533.4 | 35.1 | 58.1 |
| 16 | 400 | 596.9 | 36.6 | 76.1 |
| 18 | 450 | 635 | 39.6 | 93.7 |
| 20 | 500 | 698.5 | 42.9 | 122.0 |
| Normal Pipe Size | DN |
|---|---|
|
1/2 |
15 |
|
3/4 |
20 |
|
1 |
25 |
|
1 1/4 |
32 |
|
1 1/2 |
40 |
|
2 |
50 |
|
2 1/2 |
65 |
|
3 |
80 |
|
4 |
100 |
| (Normal Size Of Steel Pipes) In Inch | (I.D.) Inner Daimeter Gasket |
(O.D.) Outer Daimeter Gasket | ||||
|---|---|---|---|---|---|---|
| Class 150#/ LB | Class 300#/ LB | Class 400#/ LB | Class 600#/ LB | Class 900#/ LB | ||
| 1/2 | 0.84 | 1.875 | 2.125 | 2.125 | 2.125 | 2.50 |
| 3/4 | 1.06 | 2.25 | 2.625 | 2.625 | 2.625 | 2.75 |
| 1 | 1.31 | 2.625 | 2.875 | 2.875 | 2.875 | 3.125 |
| 1 1/4 | 1.66 | 3 | 3.25 | 3.25 | 3.25 | 3.50 |
| 1 1/2 | 1.91 | 3.375 | 3.75 | 3.75 | 3.75 | 3.875 |
| 2 | 2.38 | 4.125 | 4.375 | 4.375 | 4.375 | 5.625 |
| 2 1/2 | 2.88 | 4.875 | 5.125 | 5.125 | 5.125 | 6.50 |
| 3 | 3.50 | 5.375 | 5.875 | 5.875 | 5.875 | 6.625 |
| 4 | 4.50 | 6.875 | 7.125 | 7.00 | 7.625 | 8.125 |
| 5 | 5.56 | 7.75 | 8.50 | 8.375 | 9.50 | 9.75 |
| 6 | 6.62 | 8.75 | 9.875 | 9.75 | 10.50 | 11.375 |
| 8 | 8.62 | 11 | 12.125 | 12.00 | 12.625 | 14.125 |
| 10 | 10.75 | 13.375 | 14.25 | 14.125 | 15.75 | 17.125 |
| 12 | 12.75 | 16.125 | 16.625 | 16.50 | 18.00 | 19.625 |
