What is API 6A flanges?
A standard developed for the American Petroleum Institute, the API 6A specification shares many characteristics with ANSI/ASME flanges. They are dimensionally similar, however their minimal design requirements for operating pressure begin in the 2000# class, which is derived from the ASME/ANSI 600# class.
What are swivel flanges?
Swivel flange is a kind of special weld neck flange whose outer ring allows 360° rotational of the inner ring for rapid alignment of bolt holes with the standard flange. the feature makes it ideal for offshore/subsea pipeline operations, which allows divers to adjust bolt holes more quickly and conveniently.
What is 6b flanges?
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.
What are API flanges?
API flanges are manufactured to resist corrosion, pitting, and cracking due to the stress of caustic solutions they are exposed to. This makes API flanges the only choice for refineries that handle substances such as oil and explosive gases, which require high pressure and temperature tolerances.
How does a swivel flange work?
A swivel ring flange has a heavy forged welding hub that is fixed to a forged ring that can be rotated to serve as a mating flange to a weld neck or another flange. In a swivel ring flange, the rotating ring is held on by the welding hub that is in turn secured by a retaining ring.
What is API flange?
What B16 5?
ASME B16. 5 standard covers Steel Pipe Flanges and Flanged Fittings from NPS 1/2 through NPS 24 Metric/Inch in pressure class 150 to class 2500. It covers pressure-temperature ratings, materials, dimensions, tolerances, marking, testing, and methods of designating openings for pipe flanges and flanged fittings.
How do I choose a flange?
Guidelines for Selection of Various Types of Flanges
- Pressure Temperature Rating of Flanges.
- Flange Dimensional Standards.
- Flange Facings.
- The bore of Welding Neck Flanges and Hub Design.
- Flange Material Limitations.
- Iron Flanges.
- Carbon Steel Flanges.
- Low and Intermediate Alloy Steel Flanges.
Are there any ANSI forged swivel flanges for pipe?
SP Metal offer a large range of API 6A and ANSI forged swivel flanges, Blind flanges, slip-on flanges and weld-neck flanges in 4130 carbon steel, to suit 2” to 6” nominal bore XXS pipe with pressure rating below. The API 6A specification requires a rigorous and unique quality system including stringent dimensional and NDT control.
What are the dimensions of an API 6A flange?
API FLANGE Specification, API 6A FLANGE Flange Size Working Pressure (PSI) Outside Diameter Diameter of Bolt Holes Length of Bolts 1-13/16″ 10,000 7-3/8″ 3/4″ 5-1/4″ 1-13/16″ 15,000 8-3/16″ 7/8″ 6″ 1-13/16″ 20,000 10-1/8″ 1″ 7-3/4″ 2-1/16″ 2,000 6-1/2″ 5/8″ 5/8″
Do you need face to face contact with 6bx flange?
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. Usage: Oil Field, Offshore, Water System, Shipbuilding, Natural Gas, Electric Power, Pipe Projects etc.
What’s the difference between type 6B and 6bx flanges?
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 are of the ring joint type and designed with a raised face.