EXPLANATION OF CRITICAL ROLL GROOVE DIMENSIONS FOR
ORIGINAL GROOVE SYSTEM (OGS) PRODUCTS
WARNING
• Pipe dimensions and groove dimensions must be within the tolerances specified in the
tables on the following pages to ensure proper joint performance.
Failure to follow these specifications could cause joint failure, resulting in serious personal
injury and/or property damage.
NOTICE
FOR STANDARD COUPLINGS WITH RATINGS ON LIGHT-WALL STAINLESS STEEL PIPE:
• Victaulic RX rolls MUST be used when roll grooving light-wall stainless steel pipe for use
with standard couplings.
Pipe Outside Diameter – Nominal NPS Pipe Size (ANSI B36.10) and Basic Metric Pipe Size
(ISO 4200)
– The average pipe outside diameter must not vary from the specifications listed in the
tables on the following pages. Maximum allowable pipe ovality shall comply with the requirements
of ASTM A-999 and API 5L. Greater variations between the major and minor diameters will result in
difficult coupling assembly.
For NPS pipe, the maximum allowable tolerance
from square-cut pipe ends is:
1/16
inch/1.6 mm for
4 to 24-inch/114.3 to 610-mm sizes and
3/32
inch/2.4
mm for 26-inch/660-mm and larger sizes. This is
measured from the true square line.
Any internal and external weld beads or seams must be ground flush to the pipe surface. The inside
diameter of the pipe end must be cleaned to remove coarse scale, dirt, and other foreign material
that might interfere with or damage grooving rolls. The front edge of the pipe end shall be uniform
with no concave/convex surface features that will cause improper grooving roll tracking or result in
difficulties during coupling assembly.
A
B
D
B
T
C
OD
F
STANDARD ROLL GROOVE
Illustration is exaggerated for clarity
"S" Max.
TM-VE268_52
REV_H
TM-VE268
/ Operating and Maintenance Instructions Manual
