API Flanges Manufacturer

API 6A Flanges, API 650 Flanges Manufacturer.

API Weld Neck Flange Supplier, API 5000 Flanges Exporter in India.

API Flanges
API Flanges
API 6A Weld Neck Flanges
API 6A Weld Neck Flanges
API 605 Flanges
API 605 Flanges

Regal Sales Corporation Offer Latest Technical Advancements and carry well Maintained Inventory ready for Fastest Delivery to Any Location.We are Reckoned Amongst the prominent in API Flanges manufacturers and exporters of a wide range Of industrial flanges. These forged flanges are designed in accordance with the industrial standards and are fabricated using quality material. Stainless Steel API 6A Flanges are known for excellent performance, resistance against corrosion and durability. These API 650 Flanges meet the requirements of various industries like automobile, heavy engineering, railways and pipeline engineering. Available in Standard Specifications, Our Flanges Range Can also be Customized as Per the Requirements of our Clients. Our API 605 Flanges is fabricated with the wall thickness having the same dimensions of the matching pipes. Our range is catering to the requirements of various industries and is ideal for use at high pressure, and varied cold or hot temperatures.

API 6A Flanges Sizes, API 605 Forged Flanges Dimensions and Weight

Standard Specification For API Flange
  • Type:API Slip on flange, API Blind flange, API Welded neck flange, API Threaded flange, API Lapped joint flange (loose flange), API Socket welded flange, API Orifice Flanges, API Long welded neck flange
  • Standard:API, API 6A, API 650, API 605
  • Size: 1/2-60 inch
  • Pressure:Class 150, 300, 600, 1500, 2500
  • Packing: No Fumigate or Fumigate Plywood/Wood Pallet or Case
  • Surface Treatment: Anti-rust Oil, Black Anti-rust Paint, Zinc, and Hot Dipped Galvanized.
  • E-catalogue: Available , please visit Catalogue of Flange
Material & Grades of API Flanges

Carbon Steel : ASTM A 105 (high temperature carbon steel), ASTM A350 LF1 to LF3 (low temperature carbon steel), ASTM A694 Gr. F42 / F52 / F56 / F60 / F65 (high yield carbon steel flange to match API 5L linepipes)

Alloy Steel : ASTM A182 Gr. F1 / F2 / F5 / F9 / F11 Cl. 2 / F12 Cl. 2 / F22 Cl. 3 / F91 (alloy steel flanges)

Stainless Steel : ASTM A182 F 304/304L, 316/316L, 321, 347, 348 (stainless steel flanges), 904/904L

Duplex Steel : ASTM A182 F51 (duplex flanges) / F53-F55 (superduplex)

Nickel Alloys / Super Alloys : ASTM B166 UNS NO6600 (inconel 600) ASTM B564 UNS N06625 (Inconel 625), ASTM B425 UNS-NO8800 (Incoloy 800), ASTM B564 UNS N08825 (Incoloy 825), ASTM B160 UNS N0200 (Nickel 200), ASTM B564 UNS N04400 (Monel 400), ASTM B564 UNS N10276 (Hastelloy C-276)

Titanium : ASTM B381 Gr. 2 (Titanium)

Aluminium, Copper, Polypropylene, etc.

API Flange Pressure Ratings

Flange Size Working Pressure (PSI) Outside Diameter Number of Bolt Holes Diameter of Bolt Holes Length of Bolts API Ring Gasket
1-13/16" 10,000 7-3/8" 8 3/4" 5-1/4" BX-151
1-13/16" 15,000 8-3/16" 8 7/8" 6" BX-151
1-13/16" 20,000 10-1/8" 8 1" 7-3/4" BX-151
2-1/16" 2,000 6-1/2" 8 5/8" 5/8" R-23
2-1/16" 3,000/5,000 8-1/2" 8 7/8" 7/8" R-24
2-1/16" 10,000 7-7/8" 8 3/4" 3/4" BX-152
2-1/16" 15,000 8-3/4" 8 7/8" 7/8" BX-152
2-1/16" 20,000 11-5/16" 8 1-1/8" 1-1/8" BX-152
2-9/16" 2,000 7-1/2" 8 3/4" 5-1/4" R-26
2-9/16" 3,000/5,000 9-5/8" 8 1" 7" R-27
2-9/16" 10,000 9-1/8" 8 7/8" 6-1/4" BX-153
2-9/16" 15,000 10" 8 1" 7" BX-153
2-9/16" 20,000 12-13/16" 8 1-1/4" 9-1/2" BX-153
3-1/8" 2,000 8-1/4" 8 3/4" 5-1/2" R-31
3-1/8" 3,000 9-1/2" 8 7/8" 6-1/4" R-31
3-1/8" 5,000 10-1/2" 8 1-1/8" 7-3/4" R-35
3-1/16" 10,000 10-5/8" 8 1" 7-1/4" BX-154
3-1/16" 15,000 11-5/16" 8 1-1/8" 8" BX-154
3-1/16" 20,000 14-1/16" 8 1-3/8" 10-3/4" BX-154
4-1/16" 2,000 10-3/4" 8 7/8" 6-1/4" R-37
4-1/16" 3,000 11-1/2" 8 1-1/8" 7-1/2" R-37
4-1/16" 5,000 12-1/4" 8 1-1/8" 8-3/8" BX-155
4-1/16" 20,000 17-9/16" 8 1-3/4" 12-3/4" BX-155
5-1/8" 5,000 14-3/4" 8 1-1/2" 10-3/4" R-44
7-1/16" 2,000 14" 12 1" 7-1/2" R-45
7-1/16" 3,000 15" 12 1-1/8" 8-1/2" R-45
7-1/16" 5,000 15-1/2" 12 1-3/8" 11-1/4" R-46
7-1/16" 10,000 18-7/8" 12 1-1/2" 11-3/4" BX-156
7-1/16" 15,000 19-7/8" 16 1-1/2" 13" BX-156
7-1/16" 20,000 24-13/16" 16 2" 17-3/4" BX-156
9" 2,000 16-1/2" 12 1-1/8" 8-1/2" R-49
9" 3,000 18-1/2" 12 1-3/8" 9-1/2" R-49
9" 5,000" 19" 12 1-5/8" 12-1/2" R-50
9" 10,000 21-3/4" 16 1-1/2" 13-1/4" BX-157
9" 15,000 25-1/2" 16 1-7/8" 16" BX-157
11" 2,000 20" 16 1-1/4" 9-1/4" R-53
11" 3,000 21-1/2" 16 1-3/8" 10" R-53
11" 5,000 23" 12 1-7/8" 14-1/4" R-54
11" 10,000 25-3/4" 16 1-3/4" 15-3/8" BX-158
11" 15,000 32" 20 2" 19-1/2" BX-158
13-5/8" 2,000 22" 20 1-1/4" 9-1/2" R-57
13-5/8" 3,000 24" 20 1-3/8" 10-3/4" R-57
13-5/8" 5,000 26-1/2" 16 1-5/8" 12-3/4" BX-160
13-5/8" 10,000 30-1/4" 20 1-7/8" 17-3/4" BX-159
13-5/8" 15,000 34-7/8" 20 2-1/4" 21" BX-159
16-3/4" 2,000 27" 20 1-1/2" 10-3/4" R-65
16-3/4" 3,000 27-3/4" 20 1-5/8" 12-1/4" R-66
16-3/4" 5,000 30-3/8" 16 1-78" 14-3/4" BX-162
16-3/4" 10,000 34-5/16" 24 1-7/8" 17-3/4" BX-162
18-3/4" 5,000 35-5/8" 20 2" 18" BX-163
16-3/4" 10,000 40-15/16" 24 2-1/4" 23" BX-164
20-3/4" 3,000 33-3/4" 20 2" 15-1/4" R-74
21-1/4" 2,000 32" 24 1-5/8" 12-1/2" R-73
21-1/4" 5,000 39" 24 2" 19" BX-165
21-1/4" 10,000 45" 24 2-1/2" 24-3/4" BX-166
26-3/4" 2,000 41" 20 1-3/4" 14-1/4" BX-167
21-1/4" 3,000 43-3/8" 24 2" 17-1/2" BX-168
API 6A Type 6BX 15000PSI Blind / API 6A Welding Neck Flange

API Flanges Dimension

Dimension of 15000PSI(103.5MPA) type 6BX Blind and API 6A Welding Neck Flange

Size B OD C E1 Q G K T J1 J2 J3 J4 R BC N H Ring Number
1 13/16" 46.8 210 3 - 5.56 77.77 106 45.3 97.6 71.4 47.6 - 10 160.3 8 26 151
2 1/16" 53.2 220 3 - 5.95 86.23 114 50.8 111.1 82.5 54 - 10 174.6 8 26 152
2 9/16" 65.9 255 3 - 6.75 102.77 133 57.2 128.6 100 57.1 - 10 200 8 29 153
3 1/16" 78.6 290 3 - 7.54 119 154 64.3 154 122.2 63.5 - 10 230.2 8 32 154
4 1/16" 104 360 3 - 8.33 150.62 194 78.6 195.3 158.7 73 - 10 290.5 8 39 155
5 1/8" 131 420 3 9.5 9.53 176.66 225 98.5 244.5 200 81.8 6.4 16 342.9 12 42 169
7 1/16" 180.2 505 6 11.1 11.11 241.83 305 119.1 325.4 276.2 92.1 7.9 16 428.6 16 42 156
9 " 229.4 650 6 12.7 12.7 299.06 381 146.1 431.8 349.2 123.8 14.2 16 552.4 16 51 157
11" 280.2 815 6 14.3 14.29 357.23 454 187.4 584.2 427 235.7 12.7 16 711.2 20 54 158
13 5/8" 346.9 885 6 15.9 15.88 432.64 541 204.8 595.3 528.6 114.3 17.5 25 771.5 20 61 159
18 3/4" 477 1160 6 18.3 18.26 577.9 722 255.6 812.8 730.2 155.6 35.1 25 1016 20 80 164

1. RING NUMBER BX, 2. C should be the max value 3. Tolerance and Ring Gasket according to API 6A-20TH

API 6A Type 6B 2000PSI Blind / Welding Neck Flange

API Flanges Dimension

Dimension of 2000PSI (13.8MPA) type 6B Blind and Welding Neck API 6A Flange

Size B OD C K P E T Q X BC N H LN HL JL R/RX
2 1/16" 53.2 165 3 108 82.55 7.9 33.4 25.4 84 127 8 20 81 60.3 53.3 23
2 9/16" 65.9 190 3 127 101.6 7.9 36.6 28.6 100 149.2 8 23 88 73 63.5 26
3 1/8" 81.8 210 3 146 123.83 7.9 39.7 31.8 117 168.3 8 23 91 88.9 78.7 31
4 1/16" 108.7 275 3 175 149.23 7.9 46.1 38.1 152 215.9 8 26 110 114.3 103.1 37
5 1/8" 131 330 3 210 180.98 7.9 52.4 44.5 189 266.7 8 29 122 141.3 122.9 41
7 1/16" 181.8 355 6 241 211.15 7.9 55.6 47.6 222 292.1 12 29 126 168.3 147.1 45
9" 229.4 420 6 302 269.88 7.9 63.5 55.6 273 349.3 12 32 141 219.1 199.1 49
11" 280.2 510 6 356 323.85 7.9 71.5 63.5 343 431.8 16 35 160 273 248.4 53
13 5/8" 346.9 560 6 413 381 7.9 74.7 66.7 400 489 20 35 - - - 57
16 3/4" 426.2 685 6 508 469.9 7.9 84.2 76.2 495 603.2 20 42 - - - 65
21 1/4" 540.5 815 6 635 584.2 9.7 98.5 88.9 610 723.9 24 45 - - - 73

1. RING NUMBER R or RX, 2. C should be the max value 3. Tolerance and Ring Gasket according to API 6A-20TH

API 6A Type 6BX 2000PSI Blind Flange

API Blind and Weld Neck Flanges Dimension

Dimension of 2000PSI (13.8MPA) type 6BX Blind API 6A Flange
Size OD C E1 G K T J1 J4 R BC N H BX
26 3/4" 1040 6 21.4 768.33 805 126.3 835.8 9.7 16 952.5 20 48 167
30" 1120 6 23 862.3 908 134.2 931.9 17.5 16 1039.8 32 45 303
API 6A Type 6B 3000PSI Blind / Welding Neck Flange

API Flanges Dimension

Dimension of 3000PSI (20.7MPA) Type 6B Blind and API 6A Welding Neck Flange
Size B OD C K P E T Q X BC N H LN HL JL R/RX
2 1/16" 53.2 215 3 124 95.25 7.9 46.1 38.1 104.8 165.1 8 26 109.6 60.3 50 24
2 9/16" 65.9 245 3 137 107.95 7.9 49.3 41.3 123.8 190.5 8 29 112.7 73 59.7 27
3 1/8" 81.8 240 3 156 123.83 7.9 46.1 38.1 127 190.5 8 26 109.5 88.9 74.4 31
4 1/16" 108.7 290 3 181 149.23 7.9 52.4 44.4 158.8 235 8 32 122.2 114.3 98 37
5 1/8" 131 350 3 216 180.98 7.9 58.8 50.8 190.5 279.4 8 35 134.9 141.3 122.9 41
7 1/16" 181.8 380 6 241 211.15 7.9 63.5 55.6 235 317.5 12 32 147.6 168.3 147.1 45
9" 229.4 470 6 308 269.88 7.9 71.5 63.5 298.5 393.7 12 39 169.9 219.1 189.7 49
11" 280.2 545 6 362 323.85 7.9 77.8 69.9 368.3 469.9 16 39 192.1 273 237.2 53
13 5/8" 346.9 610 6 419 381 7.9 87.4 79.4 419.1 533.4 20 39 - - - 57
16 3/4" 426.2 705 6 524 469.9 11.2 100.1 88.9 508 616 20 45 - - - 66
20 3/4" 527.8 855 6 648 584.2 12.7 120.7 108 622.3 749.3 20 54 - - - 74

1. RING NUMBER R or RX, 2. C should be the max value 3. Tolerance and Ring Gasket according to API 6A-20TH

API 6A Type 6B 5000PSI Blind / Welding Neck Flange

API Flanges Dimension

Dimension of 5000PSI (34.5MPA) type 6B Blind and API 6A Welding Neck Flange
Size B OD C K P E T Q X BC N H LN HL JL R/RX
2 1/16" 53.2 215 3 124 95.25 7.9 46.1 38.1 104.8 165.1 8 26 109.5 60.3 43.7 24
2 9/16" 65.9 245 3 137 107.95 7.9 49.3 41.3 123.8 190.5 8 29 112.7 73 54.9 27
3 1/8" 81.8 265 3 168 136.53 7.9 55.6 47.7 133.3 203.2 8 32 125.4 88.9 67.5 35
4 1/16" 108.7 310 3 194 161.93 7.9 62 54 161.9 241.3 8 35 131.8 114.3 88.1 39
5 1/8" 131 375 3 229 193.68 7.9 81 73.1 196.8 292.1 8 42 163.5 141.3 110.3 44
7 1/16" 181.8 395 6 248 211.15 9.7 92.1 82.6 228.6 317.5 12 39 181 168.3 132.6 46
9" 229.4 485 6 318 269.88 11.2 103.2 92.1 292.1 393.7 12 45 223.8 219.1 173.8 50
11" 280.2 585 6 371 323.85 11.2 119.1 108 368.3 482.6 12 51 265.1 273.1 216.7 54

1. RING NUMBER R or RX, 2. C should be the max value 3. Tolerance and Ring Gasket according to API 6A-20TH

API 6A Type 6BX 10000PSI Blind / Welding Neck Flange

API Flanges Dimension

Dimension of 10000PSI(69.0MPA) type 6BX Blind and API 6A Welding Neck Flange
Size B OD C E1 Q G K T J1 J2 J3 J4 R BC N H BX
1 13/16" 46.8 185 3 - 5.56 77.77 105 42.1 88.9 65.1 48.5 - 10 146.1 8 23 151
2 1/16" 53.2 200 3 - 5.95 86.23 111 44.1 100 74.7 51.6 - 10 158.8 8 23 152
2 9/16" 65.9 230 3 - 6.75 102.77 132 51.2 120.7 92.1 57.2 - 10 184.2 8 26 153
3 1/16" 78.6 270 3 - 7.54 119 152 58.4 142.1 110.2 63.5 - 10 215.9 8 29 154
4 1/16" 104 315 3 - 8.33 150.62 185 70.3 182.6 146.1 73.1 - 10 258.8 8 32 155
5 1/8" 131 360 3 9.5 9.53 176.66 221 79.4 223.8 182.6 81 6.4 10 300 12 32 169
7 1/16" 180.2 480 6 11.1 11.11 241.83 302 103.2 301.6 254 95.3 9.7 16 403.2 12 42 156
9 " 229.4 550 6 12.7 12.7 299.06 359 123.9 374.7 327.1 93.7 9.7 16 476.3 16 42 157
11" 280.2 655 6 14.3 14.29 357.23 429 141.3 450.9 400.1 103.2 14.2 16 565.2 16 48 158
13 5/8" 346.9 770 6 15.9 15.88 432.64 518 168.3 552.5 495.3 114.3 17.5 16 673.1 20 51 159
16 3/4" 426.2 870 6 8.3 8.33 478.33 576 168.3 655.6 601.7 76.2 30.2 19 776.3 24 51 162
18 3/4" 477 1040 6 18.3 18.26 577.9 697 223.1 752.5 674.7 155.6 25.4 16 925.5 24 61 164
21 1/4" 540.5 1145 6 19.1 19.05 647.88 781 241.3 847.7 762 165.1 31.8 21 1022.4 24 67 166

1. RING NUMBER BX, 2. C should be the max value 3. Tolerance and Ring Gasket according to API 6A-20TH

API Flange Available Types
API Flange Manufacturers API 650 Face Flanges Suppliers
ANSI B16.5 API Flanges API 6A Flange Dimensions
API 605 Flanges Dimension ANSI B16.5 Class 150 API Flanges
Stainless Steel API 650 Flanges Suppliers SS API 6A Flange Exporter
ANSI B16.5 Class 150 API Flange Stockholder API Flange Distributors
Carbon Steel API 6A Flange High Quality API Flanges Manufacturer
Super Duplex Steel API 6A Flange Copper Nickel API Pipe Flanges
High Nickel Alloy API 605 Flanges Hastelloy API 650 Flanges Stockist

Other Types of API Flanges

API Flange Application
  • API Flanges uses in Oil and Gas Pipeline
  • API 605 Threaded Flanges uses in Chemical Industry
  • API 6A Plate Flanges uses in Plumbing
  • API Loose Flanges uses in Oil & Gas Industry
  • API 650 Blind Flanges uses in Water Supply Systems
  • API Slip On Flanges uses in Paper & Pulp Industry