FLANGES

Flanges

Codes to be refer for flanges are

B16.5 - dimensions and ratings of steel flanges NPS 24 and smaller

B16.47 series A - dimensions and ratings of steel flanges NPS 26 though NPS 60.

B16.47  series B used to mate existing equipment hole dimensions and PCD.

B16.36 - orifice Flange

Type of Flanges
Weld neck flange

Slip on Flange

Lap joint Flange

Socket weld Flange

Based on face of Flange classified as

Flat face  (FF)

Raised face (RF)

Ring Type Joint (RTJ)

Tong and Grove (T&G)