EDGE FEATURES / TYPES OF JOINTS

EDGE FEATURE	SHAPE	DESIGNATIPN
INSIDE BEVEL EDGE		IB
INTRNAL BEVEL EDGE UNDER CUT		I B U
INSIDE STEP		IS
INSIDE STEP UNDER CUT		I S U
REVERSE TORSION		RT
OIL RETAINING GROOVE ON OD PERIPHERY		ORG
OUTER EDGES CHAMFERED RING		KA
INSIDE EDGES CHAMFERED RING		K I
PERIPHERY COATINGS
PERIPHERY CHAROME PLATED		CR
PERIPHERY CHAROME PLATED INLAID		C R I
MOLY COATING INLAID		M
PHOSPHATIZED		P
TINNED		T
TYPE OF JOINTS
BUTT JOINT		T
ANGLE CUT/CROSS CUT		TA/C
STEP CUT		S/C
LOCK RING		L/R
BOX TYPE OVERLAPPED JOINT		BOX