Stainless pipe fitting,stainless fitting,duplex stainless,31803,32750,32760,we are one of largest sour service stainless fitting supplier according to ISO 10156.
API 6A 6B and 6BX flanges (welding neck flanges, blind flanges, target flanges) are field proven flanges which strictly designed and manufactured according to API 6A and API Spec Q1 forged.
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DESCRIPTION OF API 6A FLANGE
API 6A Flange:
- Type: Welding neck Flanges, Blind Flanges with Ring Joint Connetction
- Material: Carbon steel: A105, AISI4130,AISI4140
- Standard: API 6A
- Size: 1-13/16″ to 21-1/4″
- Pressure: 2000psi, 3000psi, 5000psi, 10000psi, 15000psi, 20000psi
- Packing: No Fumigate or Fumigate Plywood/Wood Pallet or Case
- Surface Treatment: Anti-rust Oil, Transparent/Yellow/Black Anti-rust Paint,Epoxy coating
- Usage: Oil Field, Offshore, Water System, Shipbuilding, Natural Gas, Electric Power, Pipe Projects etc.
Type 6BX Flanges:
Type 6B flanges are of the ring joint type and designed with a raised face. which are not designed for face-to-face make-up. The connection make-up bolting force reacts on the metallic ring gasket. 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.
C&N is a professional manufacturer of steel forged flange in China,API 6A Flange, API 5000PSI, 10000PSI,15000PSI flange,AISI 4130 Flange Nace MR 0175. Contact us for a quote!
API FLANGE Specification, API 6A FLANGE
| Flange Size | Working Pressure (PSI) | Outside Diameter | Number of Bolt Holes | Diameter of Bolt Holes | Length of Bolts | APIRing 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 |
