We would like to share with you drawing and dimension of flanges,

You can get dimension in details from following link,

Flange drawing and dimension

 

Some styles of flange dimension links as below,

B16.47 Series A Class 150 Weld Neck & Blind

B16.47 Series A Class 150 Weld Neck & Blind

B16.47 Series B Class 150 Weld Neck & Blind

B16.47 Series B Class 150 Weld Neck & Blind

Class 125LW (175-150 psi*)/ Same as AWWA Class D Hub

Class 125LW AWWA Class D Hub

Class 125 SO (275 psi*) / Same as AWWA Table 4 Class E

Class 125 SO AWWA Table 4 Class E

Industry Standard Class 75 Weld Neck & Blind

Industry Standard Class 75 Weld Neck & Blind

AWWA Standard Steel-Hub Flange (175-150 psi), Table 3 Class D

AWWA Standard Steel-Hub Flange

 

Facing (RF, FF, RTJ, ect.)

Type (WN, SO, Threaded, Blind, SW, LJ

e.g. 2 – 4” 300# RFWN STD 304

26"-60" covered by ANSI B16.47- WN and Blinds only

e.g. 2 - 36" 300# RF Blind Ser A 304

Slip-Ons larger than 24”

Industry Standard 125LW, 125/150, Class 250
Boiler Code Class 75, 175, 350
B16.47 Ser A dimensions per Tube Turn
B16.47 Ser B dimensions with 1” hub (slightly tapered)
e.g. 30" 150# RFSO Series A per TT A105

AWWA Flanges
Size (nominal pipe size)
Class (B,D,E,F)
Type (ring, hub, blind)
Material (if not standard steel)
e.g. 3 - 30" Class D Ring 31 (RF, FF, RTJ, ect.)
Type (WN, SO, Threaded, Blind, SW, LJ)
e.g. 2 – 4” 300# RFWN STD 304

26"-60" covered by ANSI B16.47- WN and Blinds only
Size (nominal pipe size)
Pressure Class
Facing
Type
Bore (WN)
Series
Material
e.g. 2 - 36" 300# RF Blind Ser A 304

Slip-Ons larger than 24”

Industry Standard 125LW, 125/150, Class 250
Boiler Code Class 75, 175, 350
B16.47 Ser A dimensions per Tube Turn
B16.47 Ser B dimensions with 1” hub (slightly tapered)
e.g. 30" 150# RFSO Series A per TT A105

AWWA Flanges
Size (nominal pipe size)
Class (B,D,E,F)
Type (ring, hub, blind)

e.g. 3 - 30" Class D Ring 31