Piping Coordination Systems
Symbols for single line Piping Arrangements

Butt Welded Piping Arrangement Symbols

NAMEEND
VIEW
SITE
VIEW
END
VIEW
Butt weldButt weld
Elbow
LR 90°
Elbow LR 90°Elbow LR 90°Elbow LR 90°
Elbow
SR 90°
Elbow SR 90°Elbow SR 90°Elbow SR 90°
Elbow 45°Elbow 45°Elbow 45°Elbow 45°
Elbow 180°
return
Elbow 180° returnElbow 180° returnElbow 180° return
TeeTee equalTee equalTee equal
CrossCross TeeCross TeeCross Tee
Reducer
concentric
Reducer concentricReducer concentricReducer concentric
Reducer
eccentric
Top View
Reducer eccentric
Reducer eccentricReducer eccentric
CapCapCap 
NAMEEND
VIEW
SITE
VIEW
END
VIEW
Weld Neck
flange
Weld Neck flangeWeld Neck flangeWeld Neck flange
Slip-On
flange
Slip-On flangeSlip-On flangeSlip-On flange
Lap-Joint
flange &
Stub End
Lap-Joint flange & Stub EndLap-Joint flange & Stub EndLap-Joint flange & Stub End
Blind
flange
Blind flangeBlind flangeBlind flange
Weldolet®Weldolet®Weldolet®Weldolet®
Nipolet®Nipolet®Nipolet®Nipolet®
Sockolet®
same as
Weldolet®
Sockolet®Sockolet®Sockolet®
Thredolet®
same as
Weldolet®
Thredolet®Thredolet®Thredolet®
Coupling
full or half
Coupling full or halfCoupling full or halfCoupling full or half
PipePipePipePipe

Socket Welded Piping Arrangement Symbols

NAMEEND
VIEW
SITE
VIEW
END
VIEW
PipePipePipePipe
Elbow 90°Elbow 90°Elbow 90°Elbow 90°
Elbow 45°Elbow 45°Elbow 45°Elbow 45°
Tee straight
or reducing
Tee straight or reducingTee straight or reducingTee straight or reducing
CrossCrossCrossCross
CapCapCap 
Hose Hose 
NAMEEND
VIEW
SITE
VIEW
END
VIEW
Socket Weld
flange
Socket Weld flangeSocket Weld flangeSocket Weld flange
Blind
flange
Blind flangeBlind flangeBlind flange
Sockolet®Sockolet®Sockolet®Sockolet®
ReducerReducerReducerReducer
Union Union 
Swage
concentric
Swage concentricSwage concentricSwage concentric
Swage
eccentric
Top view
Swage eccentric
Swage eccentricSwage eccentric

Threaded Piping Arrangement symbols

NAMEEND
VIEW
SITE
VIEW
END
VIEW
PipePipePipePipe
Elbow 90°Elbow 90°Elbow 90°Elbow 90°
Elbow 45°Elbow 45°Elbow 45°Elbow 45°
Tee straight
or reducing
Tee straight or reducingTee straight or reducingTee straight or reducing
CrossCrossCrossCross
CapCapCap 
Hose Hose 
NAMEEND
VIEW
SITE
VIEW
END
VIEW
Socket Weld
flange
Socket Weld flangeSocket Weld flangeSocket Weld flange
Blind
flange
Blind flangeBlind flangeBlind flange
Thredolet®Thredolet®Thredolet®Thredolet®
ReducerReducerReducerReducer
Union Union 
Swage
concentric
Swage concentricSwage concentricSwage concentric
Swage
eccentric
Top view
Swage eccentric
Swage eccentricSwage eccentric

Note: Symbols are shown in black lines. Lighter lines show connected pipe, and are not parts of the symbols.

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