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 Flange, API 5000PSI, 10000PSI,15000PSI flange,AISI 4130 Flange Nace MR 0175

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 
All kind of flanges are delimited by API 6A as below:

Welding neck flange is the flange with a neck on the side opposite the sealing face prepared with a bevel to weld to corresponding pipe or transition pieces.

Threaded flange is the flange having a sealing face on one side and a female thread on the other for the purpose of joining flanged connections to threaded connections.

Blind flange is the flange with no centre bore, used to close off completely a flanged end or outlet connection.

Target flange is a special configuration of blind flange used downstream, facing upstream, to cushion and reduce the erosive affect of high velocity abrasive fluid. This flange has a counter bore filled with lead.

Type 6B flanges are of the ring joint type and are not designed for face-to-face make-up. The connection make-up bolting force reacts on the metallic ring gasket.

 

Type 6BX Flanges:

Type 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 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

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.

API 6A 6BX Flange

Categories: Blind Flange