What is 6B flanges?
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. 6BX flanges are of the ring joint type and designed with a raised face.
What is api 6B?
API STD 6B. May 1, 1949. Specification for Ring-Joint flanges (Tentative) This specification covers materials and dimensions for cast and forged, carbon-steel and alloy-steel ring-joint flanges intended for use in accordance with the service pressure ratings given in Sect….
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 is FF and RF flange?
The flange face is the surface area that hosts the gasket. The 6 available types of flange face are flat (FF), raised (RF), ring joint (RTJ), lap joint, male and female (M&F), tongue and groove (T&G). RF and FF flanges may have different types of “finish” (i.e. roughness on top the surface): smooth, stock and serrated.
What is API flange?
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.
Can a RF flange mate to a FF flange?
RF flanges are commonly used on forged steel or forged stainless steel flanges. An RF flange uses a gasket called a ring gasket. FF flanges are made specifically to mate with other FF flanges. These flanges are often made from cast instead of forged metal.
What is the difference between RF and RTJ flange?
Answer: RF means “Raised Face.” RTJ means “Ring Type Joint.” RF flanges seal with a flat gasket, formerly made of asbestos but now made of more environmentally friendly material, designed for installation between the raised faces of two mating flanges (both with raised faces).
What pressure is a 1500 flange rated for?
ANSI FLANGE ASTM A105, A350 Gr. LF2/LF6 Class 1
| ANSI/ASME B16.34 | ANSI PRESSURE RATING | |
|---|---|---|
| Temperature in C° | 150# | 1500# |
| -29 / 38 | 19.6 | 255.3 |
| 50 | 19.2 | 250.6 |
| 100 | 17.7 | 233 |
Is ASME and ANSI flange same?
ANSI Flanges are manufactured based on standards developed by organizations and ASME Flanges are based on codes and standards for mechanical devices. The ANSI Flanges are designed based on approx. 9500 standards whereas ASME Flanges manufactured on 600 codes and standards for different mechanical devices.
What are the 6bx and 6b 6b flanges made of?
6BX and 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. They are robust and high cost performance. 6B flanges are of the ring joint type and are not designed for face-to-face make-up.
What are the different types of API 6A flanges?
Api 6A 6BX and API 6A 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. They are robust and high cost performance. API 6 A 6B flanges are of the ring joint type and are not designed for face-to-face make-up.
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.
Why are API 6A 6bx pipe fittings have a raised face?
API 6A 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.