API 6A Type 6B 5000 psi(34.5 MPa) 5K Blind Flange,API 3000 psi 3K Blind Flange
API 6BX flange and API 6B Flanges (welding neck flanges, blind flanges, target flanges and test flanges) are fully conformed to API 6A and made of modern alloy steel via advanced manufacturing techniques
C&N is a professional manufacturer of steel forged flange in China,
API 6A 6B Blind Flange, API 5000PSI Blind Flange, 10000PSI Blind Flange,15000PSI Blind flange,AISI 4130 Flange Nace MR 0175,API 6BX blind Flange
Type 6BX Flanges:
API 6BX flanges are of the ring joint type and designed with a raised face. Depending on the tolerances, the connection make-up bolting force may react on the raised face of the flange when the gasket has been properly seated. This support prevents damage to the flange or gasket from excessive bolt torque. Therefore, one of the flanges in 6 BX connection shall have a raised face. Type 6BX flanges are of through bolted or studded design. Face-to-face contact is not necessary for the proper functioning of the 6BX flange. Dimensions for 6BX flanges blind type shall conform to Table 46 of API 6A (19 th Edition, July 2004) as applicable.
API 6A-TYPE-6B 13.8 MPA (2000 PSI) BLIND FLANGE
API 6A-TYPE-6B 20.7 MPA (3000 PSI) FLANGE
API FLANGE Specification, API 6A Blind FLANGE
DESCRIPTION OF API 6A FLANGE
API 6A Type 6B 5000 psi(34.5 MPa) Blind RTJ Flange Dimensions and Drawing
API 6A Type 6B 5000 psi(34.5 MPa) Blind RTJ Flange Dimensions and Drawing
| SIZE | GROOVE | CHAMFER | FLANGE DIMENSIONS | BOLTING | RING | ||||||
| NPS | B | E | C | K | P | OD | T | BC | N | H | R / RX |
| 2-1/16″ | 53.2 | 7.9 | 3 | 124 | 95.25 | 215 | 46.1 | 165.10 | 8 | 26 | 24 |
| 2-9/16″ | 65.9 | 7.9 | 3 | 137 | 107.95 | 245 | 49.3 | 190.50 | 8 | 29 | 27 |
| 3-1/8″ | 81.8 | 7.9 | 3 | 168 | 136.53 | 265 | 55.6 | 203.20 | 8 | 32 | 35 |
| 4-1/16″ | 108.7 | 7.9 | 3 | 194 | 161.93 | 310 | 62.0 | 241.30 | 8 | 35 | 39 |
| 5-1/8″ | 131.0 | 7.9 | 3 | 229 | 193.68 | 375 | 81.0 | 292.10 | 8 | 42 | 44 |
| 7-1/16″ | 181.8 | 9.7 | 6 | 248 | 211.15 | 395 | 92.1 | 317.50 | 12 | 39 | 46 |
| 9″ | 229.4 | 11.2 | 6 | 318 | 269.88 | 485 | 103.2 | 393.70 | 12 | 45 | 50 |
| 11″ | 280.2 | 11.2 | 6 | 371 | 323.85 | 585 | 119.1 | 482.60 | 12 | 51 | 54 |
*All dimensions are in mm unless otherwise specified.
*Tolerances and ring gaskets are according to API 6A.
Materials for API 6A Type 6B 5000 psi(34.5 MPa) Blind RTJ Flange
1) Alloy Steel: ASTM A182 Grade F1 / F5 / F9 / F11 / F22 / F91
2) Carbon Steel: ASTM A105 / A105N, ASTM A694 Grade F42 / F46 / F52 / F56 / F60 / F65 / F70，AISI 4130，AISI 4140
ASTM A350 Grade. LF2
3) Stainless Steel: ASTM A182 Grade F304 / F304L, F316/ F316L, F310, F309, F317L, F321, F904L, F347
4) Duplex Stainless Steel: ASTM A182 Grade F44 / F45 / F51 / F53 / F55 / F61 / F60
5) Nickel Alloys: ASTM B472, ASTM B564, ASTM B160
Monel 400, Nickel 200, Inconel 825, Inconel 601, Hastelloy C276, Alloy 31,
Alloy 20, Inconel 625, Inconel 600
6)Copper Alloys: ASTM B61 / B152 / B151 / B62
