Pipe Flange Abbreviations
A
B
- A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z
 - Blind Flange (BF)
 
C
D
E
- A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z
 - Expander Flange (EF)
 
F
G
H
I
J
K
L
- A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z
 - Lap Joint Flange (LJF)
 
M
N
O
- A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z
 - Olet Connection
- Nipoflange (NFOL)
 - Weldoflange (WFOL)
 
 
- Orifice Flange (ORF)
- Slip-on Orifice Flange (SOORF)
 - Threaded Orifice Flange (TORF)
 - Weld Neck Orifice Flange (WNORF)
 
 
P
Q
R
- A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z
 - Reducing Flange (RF)
- Reducing Slip-on Flange (RSOF)
 - Reducing Weld Neck Flange (RWNF)
 
 
S
- A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z
 - Slip-on Flange (SOF)
 - Socket Weld Flange (SF)
 - Standard Connection Flange (SCF)
- Full Barrel Flange (FBF)
 - Heavy Barrel Flange (HBF)
 - Long Weld Neck Flange (LWNF)
 
 
- Studding Outlet Flange (STOF)
- Flat Bottom Studding Outlet Flange (FSOF)
 - Shell Studding Outlet Flange (SSOF)
 - Tangential Studding Outlet Flange (TSOF)
 
 
T
- A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z
 - Threaded Flange (TF)
 
U
V
W
- A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z
 - Weld Neck Flange (WNF)
 
X
Y
Z

