This copy belongs to Cenex Harvest States Coop.
PFI Standard ES-22
(Revised September 2002)
|Denotes Revision
RECOMMENDED PRACTICE FOR
COLOR CODING OF PIPING MATERIALS
1. Scope
1.1 The intent of this standard is to provide a system
for easy identification of piping materials by
general material classifications.
2. General
2.1 This standard cannot possibly distinguish between
all the various grades or specifications of material.
However, the user is encouraged to develop his
own identification system depending on the
specific materials involved for a project. Table 1
identifies the most common grades of material
used in piping systems.
2.2 Color markings are assigned on the basis of
nominal chemical composition.
2.3 Identification by this method is not a substitute for
other permanent manufacturer’s marking, as is
required by applicable ASTM or other piping
material specifications.
2.4 The principal purpose of this standard is to
simplify identification of the pipe during storage
and after the pipe has been cut for fabrication or
returned to stock.
2.5 Where pipe spool pieces are painted after
completion of fabrication, further material color
marking is not necessary except where required
by code or the purchaser. Spool pieces are
generally marked with special identifications (i.e.
piece mark numbers) which identifies the material
on a paper document.
2.6 Paint and marking materials for use on nuclear
piping systems shall be approved as suitable for
the material to which it will be applied. Marking
materials for stainless steel and nickel alloy piping
must not contain undesirable substances such as
chlorides, fluorides, sulfur, and low melting point
metals.
3. Location Of Marking
3.1 Pipe shall be marked with paint, dyes, tapes, etc.,
for its full length.
3.2 Flanges shall be banded on the back of the flange
at the intersection of the back face and the hub.
3.3 Fittings shall be striped from bevel to bevel.
3.4 Miscellaneous material shall be color marked so
as to provide proper identity.
3.5 The paint shall not cover welding surfaces.
3.6 Typical markings are shown in Figure 1.
This copy belongs to Cenex Harvest States Coop.
This copy belongs to Cenex Harvest States Coop.
PFI Standard ES-22
(Revised September 2002)
|Denotes Revision
Table 1
COLOR CODE FOR MATERIAL IDENTIFICATION
Common
Designation
Material
UNS
Designation
Color of Stripe(s)
Carbon Steel
Carbon Steel, Electric Resistance Welded Pipe
Carbon Steel, Smls, specified tensile strength under 70,000
psi (483 MPA)
Carbon Steel, killed steel
Carbon Steel, specified tensile strength 70,000 psi
(483 MPA) and over
Carbon Steel, low temperature (impact tested)
A53 Gr. B/API
5LB Wld
A53 Gr. B
None
1 solid white
K03005
No Marking
A106 Gr. B
A106 Gr. C
K03006
K03501
1 solid green
2 solid green
A333 Gr. 6
K03006
1 solid red
High Yield Carbon Steel
52,000 min. yield
60,000 min. yield
65,000 min. yield
70,000 min. yield
API 5LX-52
API 5LX-60
API 5LX-65
API 5LX-70
1 solid yellow, 1 solid green
1 solid yellow, 1 solid pink
2 solid yellow
1 solid yellow, 1 solid orange
Low Alloy Materials
C-Mo steel
1 Cr-1/2 Mo Steel
1 1/4 Cr-1/2 Mo Steel
2 1/4 Cr-1 Mo Steel
5 Cr-1/2 Mo Steel
9 Cr-1 Mo Steel
9 Cr 1 Mo 0.2V
9 Cr ½ Mo 0.2V 2W
A335 Gr. P1
A335 Gr. P12
A335 Gr. P11
A335 Gr. P22
A335 Gr. P5
A335 Gr. P9
A335 Gr. P91
A335 Gr. P92
K11522
K11562
K11597
K21590
K41545
S50400
K91560
K92460
1 solid orange
1 solid orange, 1 solid blue
1 solid yellow
1 solid blue
1 solid blue, 1 solid yellow
2 solid orange
1 solid pink, 1 solid gray
1 solid green, 1 solid gray
A268 TP405
A268 TP410
S40500
S41000
1 solid green, 1 solid black
1 solid green, 1 solid red
A312 TP304
A312 TP304L
A312 TP304H
A358 Gr309
A358 Gr310
A312 TP316
A312 TP316L
A312 TP316H
A312 TP317
A312 TP317L
A312 TP321
A312 TP321H
A312 TP347
A312 TP347H
S30400
S30403
S30409
S30900
S31000
S31600
S31603
S31609
S31700
S31703
S32100
S32109
S34700
S34709
1 solid black
2 solid black
1 intermittent black
1 solid black, 1 solid brown
1 solid green, 1 solid orange
1 solid gray
2 solid gray
1 intermittent gray
1 solid brown, 1 solid green
1 solid brown, 1 solid red
1 solid pink
2 solid pink
1 solid brown
2 solid brown
B161
B407
B407
B423
B167
B444
B622
B622
B622
B622
B464
B165
N02200
N08800
N08810
N08825
N06600
N06625
N10665
N10276
N06022
N06007
N08020
N04400
1 solid black, 1 solid pink
1 solid black, 1 solid orange
1 solid gray, 1 solid red
1 solid gray, 1 solid blue
2 solid blue
1 solid blue, 1 solid pink
1 solid red, 1 solid orange
1 solid red, 1 solid blue
2 solid red
1 solid red, 1 solid yellow
1 solid black, 1 solid blue
1 solid black, 1 solid yellow
B241
B241
A93003
A96061
1 solid purple
1 solid tan
Ferritic and Martensitic Stainless Steels
Type 405
Type 410
Austenitic Stainless Steels
Type 304
Type 304L
Type 304H
Type 309
Type 310
Type 316
Type 316L
Type 316H
Type 317
Type 317L
Type 321
Type 321H
Type 347
Type 347H
Nickel Based Alloys
Nickel 200
Incoloy 800
Incoloy 800H
Incoloy 825
Inconel 600
Inconel 625
Hastelloy Alloy B-2
Hastelloy Alloy C-276
Hastelloy Alloy C-22
Hastelloy Alloy G
Carpenter Alloy 20 CB-3
Monel 400
Aluminum Alloys
Alloy 3003 Aluminum
Alloy 6061 Aluminum
Note: Any product manufactured by welding shall have an additional white stripe.
This copy belongs to Cenex Harvest States Coop.
MATERIAL
COLOR OF STRIPE (S)
MATERIAL
CS, ERW, A53
1 SOLID WHITE
304 S.S.
CS, Smls, A53 B
NO MARKING
304L S.S.
CS, Smls, A106 B
316 S.S.
CS, Smls, A106 C
316L S.S.
CS, Low Temp, A33-6
317 S.S.
CS, API 5LX-52
317L S.S.
CS, API 5LX-60
321 S.S.
CS, API 5LX-65
347 S.S.
CS, API 5LX-70
Incoloy 800
C-Mo steel
Incoloy 825
1 Cr - 1/2 Mo
Inconel 600
1 1/4 Cr – 1/2 Mo
Inconel 625
2 1/4 Cr - 1 Mo
Carpenter 20
5 Cr - 1/2 Mo
Monel 400
9 Cr - 1/2 Mo
Hastelloy C-276
COLOR OF STRIPE (S)