API 6A Type 6B WN & BL Flanges

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Leading Manufacturer & Exporter of API 6A Type 6B WN & BL Flanges

API 6A Type 6B Weld Neck & Blind Flanges

Kalpataru Pipings Solutions is a leading manufacturer, dealer, distributor, stockist, and supplier of various types of flanges. Our extensive range includes Blind Flanges, Reducing Threaded Flanges, Lap Joint Flanges, Flange Gaskets, Threaded Flanges, Socket Weld Flanges, Flange Bolts, Ring Flanges, Spectacle Blind Flanges, Weld Neck Flanges, Orifice Flanges, Slip-On Flanges, and High Hub Blind Flanges. These flanges are made using high-quality steel grades such as Stainless Steel (SS) Flanges, including 310, 321, 202, 347, 304, 316, and 316L.

Our flanges are known for their durability and precision manufacturing to fit various pipe sizes. They are widely used by engineers and top project consultants in machined components and Kalpataru Pipings. For over two decades, we have been supplying flanges to prominent government sector companies such as HPCL, and BPCL. We are also an approved supplier for the United Kingdom & France.

Our flanges are used in equipment manufacturing, mining, oil refineries, chemical manufacturing, steel and aluminum production, utilities, transportation, and industrial construction. Additionally, we maintain a substantial stock of other grades of flanges, including Alloy Steel (A182 F1, F5, F9, F11, F22, F91), Nickel Alloy (200, 201), Duplex Steel (UNS S31803, UNS S32205), Carbon Steel, Copper Nickel, Inconel 600, Incoloy 800, Hastelloy, and Monel 400.

For more information and to check our stock, please contact us.

API 6A Type 6B Welding Neck | Blind Flange

  • API 6A Type 6B 2000 PSI Weld Neck & Blind Flanges
  • API 6A Type 6B 3000 PSI Weld Neck & Blind Flanges
  • API 6A Type 6B 5000 PSI Weld Neck & Blind Flanges
  • API Flange Description-API Flanges, specifically API 6A Flanges, are designed and manufactured to meet the stringent standards of the API 6A specification. These flanges are produced in a variety of materials, including forged steel, stainless steel, and carbon steel. Types of flanges available include blind, target, threaded, weld-neck, and adapter flanges.
  • API 6A Flange Manufacturer-Antong is a reputable supplier of API 6A Flanges, offering high-quality products that conform to the API 6A specifications. Our range includes flanges suitable for various industrial applications, ensuring reliability and performance.

Type 6B Flanges

Type 6B flanges are ring joint type flanges, not designed for face-to-face make-up. The bolting force for the connection acts on the metallic ring gasket. These flanges are available in through-bolted or studded designs. The dimensions for 6B blind flanges conform to Table 36, Table 37, and Table 38, as referenced in Figure 8 on page 108 of API 6A (19th Edition, July 2004).

API 6A Type 6B WN & BL Flanges
API 6A Type 6B WN & BL Flanges
API 6A Type 6B WN & BL Flanges
API 6A Type 6B WN & BL Flanges
API 6A Type 6B WN & BL Flanges
API 6A Type 6B WN & BL Flanges

API 6A Type 6B WN & BL Flanges Specification

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

Description of API 6A Flange

API 6A Blind Flange is a specialized flange system originating from the USA, designed for high-pressure and high-temperature applications. The system includes various flange types, primarily Welding Neck Flanges and Blind Flanges with Ring Joint Connections.

  • Type: Weld Neck Flanges and Blind Flanges with Ring Joint Connections
  • Material:Carbon Steel: A105, SS400, SF440, RST37.2, S235JRG2, P250GH, C22.8 Stainless Steel: F304, F304L, F316, F316L, 316Ti Others: Copper, etc.
  • Standard: API 6A
  • Size Range: 1-13/16″ to 21-1/4″
  • Pressure Ratings: 2000 psi, 3000 psi, 5000 psi, 
  • Packing: Options include No Fumigate or Fumigate Plywood/Wood Pallet or Case
  • Surface Treatment: Anti-rust oil, transparent/yellow/black anti-rust paint, zinc coating, and hot-dip galvanizing.
  • E-catalogue: Available; please visit the catalog for detailed information
  • Usage: Suitable for Oil Fields, Offshore, Water Systems, Shipbuilding, Natural Gas, Electric Power, and Pipe Projects

    API 6A Flanges are essential in industries requiring robust and reliable connections for pipelines and pressure vessels, ensuring safety and performance in demanding environments.

    We Supply to API 6A Type 6B WN & BL Flanges

    Kolkata, Madrid, Al Khobar, Sharjah, Perth, Haryana, Montreal, Navi Mumbai, Ranchi, Chiyoda, Toronto, Atyrau, Sydney, Petaling Jaya, Thiruvananthapuram, Bengaluru, Brisbane, Lagos, Tehran, Caracas, Melbourne, Ludhiana, Ahvaz, Algiers, Doha, Kuwait City, Istanbul, New Delhi, Aberdeen, Ankara, London, Howrah, Bogota, Ahmedabad, Noida, Singapore, Surat, Calgary, Cairo, Jaipur, Thane, Vung Tau, Port-of-Spain, Riyadh, Santiago, Hanoi, Colombo, Ernakulam, Mumbai, Jakarta, Dubai, Seoul, Karachi, Manama, Kuala Lumpur, Los Angeles, Chennai, Houston, Baroda, Geoje-si, Indore, Jamshedpur, Dammam, Ho Chi Minh City, Courbevoie, Vadodara, Lahore, Edmonton, Rio de Janeiro, Nashik, Muscat, Bangkok, Pune, Jeddah, Hong Kong, Visakhapatnam, Secunderabad, Dallas, Moscow, Gimhae-si, Milan, Ulsan, Coimbatore, Granada, Abu Dhabi, Kanpur, Faridabad, Busan, Mexico City, New York, Al Jubail, Gurgaon, Chandigarh, Nagpur, Rajkot, Pimpri-Chinchwad, Hyderabad, Bhopal, La Victoria, Germany, Belgium, Italy, Turkey, Denmark and UK.

    FAQ

    What is API 6A Type 6B?

    API 6A Type 6B flanges are a type of weld neck flange used in the oil and gas industry. These flanges are designed with a ring joint for sealing and are not intended for face-to-face makeup. They use a metallic ring gasket to achieve a tight seal. API 6A Type 6B flanges come in sizes ranging from 2-1/16″ to 21-1/4″ and are rated for pressure classes of 2000#, 3000#, and 5000#.

    What is a WN RF flange?

    A Weld Neck Raised Face Flange (WNRF) is a type of flange used to connect pipes in various high-pressure applications. It features a long tapered hub that is welded to the pipe, providing reinforcement and reducing stress concentrations at the base of the flange. The “raised face” part of the flange means that the sealing surface is slightly elevated above the bolting circle face. This design helps ensure a secure seal with the use of a gasket between the flanges. WNRF flanges are commonly used in pipelines, pressure vessels, and other critical systems requiring high reliability and strength.

    What does API stand for in flanges?

    API stands for the American Petroleum Institute, the organization that was established in the 1930s to create standards for flanges that could handle higher pressure ratings compared to the ASA flanges of that era. API flanges are specifically designed to meet the stringent requirements of the oil and gas industry.

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