Nominal Pipe Size Chart
Inch / MM
Nominal
Pipe Size
OD
Schedule
Designations
Inch / MM
Inch / MM
ASME
1/8
6
0.405
10.3
1/4
8
0.540
13.7
3/8
10
0.675
17.1
1/2
15
0.840
21.3
3/4
20
1
25
1-1/4
32
1-1/2
40
2
50
2-1/2
65
3
80
3-1/2
90
4
100
4-1/2
115
1.050
26.7
1.315
33.4
1.660
42.2
1.900
48.3
2.375
60.3
2.875
73.0
3.500
88.9
4.000
101.6
4.500
114.3
5.000
127.0
10
STD
XS
10
STD
XS
10
STD
XS
5
10
STD
XS
160
XXS
5
10
STD
XS
160
XXS
5
10
STD
XS
160
XXS
5
10
STD
XS
160
XXS
5
10
STD
XS
160
XXS
5
10
STD
XS
160
XXS
5
10
STD
XS
160
XXS
5
10
STD
XS
160
XXS
5
10
STD
XS
XXS
5
10
STD
XS
120
160
XXS
STD
XS
XXS
Wall Thickness
40
80
10S
40S
80S
10S
40S
80S
10S
40S
80S
5S
10S
40S
80S
40
80
5S
10S
40S
80S
40
80
40
80
40
80
40
80
5S
10S
40S
80S
40
80
5S
10S
40S
80S
40
80
5S
10S
40S
80S
40
80
5S
10S
40S
80S
40
80
5S
10S
40S
80S
40
80
5S
10S
40S
80S
40
80
5S
10S
40S
80S
5S
10S
40
80
40
80
40S
80S
40S
80S
Nominal
Pipe Size
OD
Schedule
Designations
ASME
Inch
MM
Inch / MM
Inch / MM
0.049
0.068
0.095
0.065
0.088
0.119
0.065
0.091
0.126
0.065
0.083
0.109
0.147
0.188
0.294
0.065
0.083
0.113
0.154
0.219
0.308
0.065
0.109
0.133
0.179
0.250
0.358
0.065
0.109
0.140
0.191
0.250
0.382
0.065
0.109
0.145
0.200
0.281
0.400
0.065
0.109
0.154
0.218
0.344
0.436
0.083
0.120
0.203
0.276
0.375
0.552
0.083
0.120
0.216
0.300
0.438
0.600
0.083
0.120
0.226
0.318
0.636
0.083
0.120
0.156
0.188
0.237
0.337
0.438
0.531
0.674
0.247
0.355
0.710
1.24
1.73
2.41
1.65
2.24
3.02
1.65
2.31
3.20
1.65
2.11
2.77
3.73
4.78
7.47
1.65
2.11
2.87
3.91
5.56
7.82
1.65
2.77
3.38
4.55
6.35
9.09
1.65
2.77
3.56
4.85
6.35
9.70
1.65
2.77
3.68
5.08
7.14
10.16
1.65
2.77
3.91
5.54
8.74
11.07
2.11
3.05
5.16
7.01
9.53
14.02
2.11
3.05
5.49
7.62
11.13
15.24
2.11
3.05
5.74
8.08
16.15
2.11
3.05
3.96
4.78
6.02
8.56
11.13
13.49
17.12
6.27
9.02
18.03
5
125
5.563
141.3
267-203-1600 • PHTool.com • sales@phtool.com
6
150
6.625
168.3
7
175
7.625
193.7
8
200
8.625
219.1
9
225
9.625
244.5
10
250
10.750
273.0
11
275
11.750
298.5
12
300
12.750
323.8
14
350
14.000
355.6
5
10
STD
XS
120
160
XXS
5
10
STD
XS
120
160
XXS
STD
XS
XXS
10
20
30
STD
60
XS
100
120
140
XXS
160
STD
XS
XXS
40
80
Wall Thickness
5S
10S
40S
80S
5S
10S
40
80
40S
80S
40
80
40S
80S
5S
10S
40
40S
80
80S
40
80
40S
80S
5S
10S
20
30
STD
XS
80
100
120
140
160
STD
XS
XXS
40
60
40S
80S
XXS
40
80
40S
80S
5S
10S
20
30
STD
40
XS
60
80
100
120
140
160
10
20
STD
40
XS
60
80
100
120
140
160
40S
80S
XXS
10S
30
40S
80S
Inch
MM
0.109
0.134
0.258
0.375
0.500
0.625
0.750
0.109
0.134
0.188
0.280
0.432
0.562
0.719
0.864
0.301
0.500
0.875
0.109
0.148
0.250
0.277
0.322
0.406
0.500
0.594
0.719
0.812
0.875
0.906
0.342
0.500
0.875
0.134
0.165
0.188
0.250
0.307
0.365
0.500
0.594
0.719
0.844
1.000
1.125
0.375
0.500
0.875
0.156
0.180
0.188
0.250
0.330
0.375
0.406
0.500
0.562
0.688
0.844
1.000
1.125
1.312
0.188
0.250
0.312
0.375
0.438
0.500
0.594
0.750
0.938
1.094
1.250
1.406
2.77
3.40
6.55
9.53
12.70
15.88
19.05
2.77
3.40
4.78
7.11
10.97
14.27
18.26
21.95
7.65
12.70
22.23
2.77
3.76
6.35
7.04
8.18
10.31
12.70
15.09
18.26
20.62
22.23
23.01
8.69
12.70
22.23
3.40
4.19
4.78
6.35
7.80
9.27
12.70
15.09
18.26
21.44
25.40
28.58
9.53
12.70
22.23
3.96
4.57
4.78
6.35
8.38
9.53
10.31
12.70
14.27
17.48
21.44
25.40
28.58
33.32
4.78
6.35
7.92
9.53
11.13
12.70
15.09
19.05
23.83
27.79
31.75
35.71
We believe that our success depends on ensuring the
success of our customers by providing comprehensive,
consistent quality in everything we do.
Nominal Pipe Size Chart
Inch / MM
Nominal
Pipe Size
OD
Schedule
Designations
Inch / MM
Inch / MM
ASME
16
400
16.000
406.4
18
450
20
500
22
550
18.000
457
20.000
508
Wall Thickness
10S
10
20
STD
XS
60
80
100
120
140
160
30
40
40S
80S
10S
10
20
STD
30
XS
40
60
80
100
120
140
160
40S
80S
10S
10
STD
XS
40
60
80
100
120
140
160
20
30
40S
80S
10S
22.000
559
STD
XS
60
80
100
120
140
160
10
20
30
40S
80S
Nominal
Pipe Size
OD
Inch
MM
Inch / MM
Inch / MM
0.188
0.250
0.312
0.375
0.500
0.656
0.844
1.031
1.219
1.438
1.594
0.188
0.250
0.312
0.375
0.438
0.500
0.562
0.750
0.938
1.156
1.375
1.562
1.781
0.218
0.250
0.375
0.500
0.594
0.812
1.031
1.281
1.500
1.750
1.969
0.218
0.250
0.375
0.500
0.875
1.125
1.375
1.625
1.875
2.125
4.78
6.35
7.92
9.53
12.70
16.66
21.44
26.19
30.96
36.53
40.49
4.78
6.35
7.92
9.53
11.13
12.70
14.27
19.05
23.83
29.36
34.93
39.67
45.24
5.54
6.35
9.53
12.70
15.09
20.62
26.19
32.54
38.10
44.45
50.01
5.54
6.35
9.53
12.70
22.23
28.58
34.93
41.28
47.63
53.98
24
600
24.000
610
26
650
26.000
660
28
700
28.000
711
ASME Sec V Calibration Blocks
PH Tool manufactures hundreds of ASME Sec V Calibration Blocks every year. A
calibration block should be a section of pipe of the same nominal size, schedule,
heat treatment, and material specification as the material being examined. PH
Tool maintains a large inventory of raw material for the machining of these
standards, or they can be made from customer-supplied material as well.
ASME Pipe Calibration Blocks typically include 4 EDM notches made in
accordance with ASME Sec V, Art. 4, Fig. T-434.3-1. SDHs are also available,
made to Fig. T-434.3-2. We also manufacture a full-line of non-piping (flat)
ASME Sec V calibration blocks, as well as special designs for both pipe and
non-pipe applications for use with Phased Array Ultrasonic Testing (PAUT.)
Application-Specific Reference Standards with EDM Notches, Flat-Bottom Holes
PH Tool is highly-specialized in producing artificial discontinuities
known as electrical discharge machined (EDM) notches. EDM notches
are typically produced from an otherwise acceptable production item
supplied by the manufacturer of the part or the test lab performing the
inspection. A length of tubing, a section of wheel, a turbine blade
(almost anything imaginable!) can be shipped to PH Tool for machining
of EDM notches.
Other machined discontinuities such as Flat-bottom Holes, Side-drilled
Holes, simulated corrosion/pitting are available as well.
NDT Calibration Blocks
Standard test blocks are nonrepresentative tools, meaning that they
are not manufactured from actual parts. Rather, they are of
simplified design and contain manufactured discontinuities such as
holes, angles, radii and more. Standard Test Blocks serve the
purpose of standardizing and calibrating test equipment to ensure
that it is functioning properly. Most test blocks ship from stock.
267-203-1600 • PHTool.com • sales@phtool.com
30
750
32
800
34
850
30.000
762
32.000
813
34.000
864
Schedule
Designations
Wall Thickness
ASME
10
STD
XS
30
40
60
80
100
120
140
160
20
10S
40S
80S
10
40S
80S
STD
XS
10
STD
XS
STD
XS
STD
XS
STD
XS
36
900
36.000
914
42
1050
42.000
1067
STD
XS
STD
XS
48
1200
48.000
1219
STD
XS
20
30
10
20
30
10
40S
80S
40S
80S
20
30
40
10
20
30
40
10
Inch
MM
0.250
0.375
0.500
0.562
0.688
0.969
1.219
1.531
1.812
2.062
2.344
0.312
0.375
0.500
0.312
0.375
0.500
0.625
0.312
0.375
0.500
0.625
0.312
0.375
0.500
0.625
0.688
0.312
0.375
0.500
0.625
0.688
0.312
0.375
0.500
0.375
0.500
0.625
0.750
0.375
0.500
6.35
9.53
12.70
14.27
17.48
24.61
30.96
38.89
46.02
52.37
59.54
7.92
9.53
12.70
7.92
9.53
12.70
15.88
7.92
9.53
12.70
15.88
7.92
9.53
12.70
15.88
17.48
7.92
9.53
12.70
15.88
17.48
7.92
9.53
12.70
9.53
12.70
15.88
19.05
9.53
12.70
Custom Calibration Blocks
PH Tool has machined calibration blocks in all shapes, sizes, and
alloys, and is ready to work with you to create your ideal design.
Whether you need a block that has small holes or a pattern of holes;
a radiussed scanning surface, an block, or a custom geometry, we are
your go-to shop. We have the experience you need to make blocks in
any alloy you can imagine. Custom calibration Blocks can be made
from PH Tool-supplied materials, or those supplied by our customers.
The PH Tool Difference
• Rush Services
• Serving NDT for 50 Years
• Comprehensive QA Program
• Special Alloys
• Large Workpiece Capacity
(10,000 lbs. 40 ft.)
• Responsive Quotes
• Test Block Design
• 3D CAD/CAM Capabilities
• Specialized Low-Energy EDMs
• 50+ EDM Machines (Sinker / Wire Capability)
• 20+ CNC Milling Centers
• Deep FBH Drilling (20+ Inches)
• In-house Nickel-plating
• In-house Weld Lab
• Smallest EDM Notches / Holes
in the NDT Industry
• NIST-Traceability
• Heat/Lot Traceability
• Ultrasonic Inspection of Test Block
Raw Material
• Comprehensive Certification Reports with
As-built Dimensions
• XRF / PMI Test Reports
• Electrical Conductivity Measurement
• Serialization / Branding by Laser Engraving
• International Shipping Experts
• Customized, Fitted Hardwood Cases
• Pelican-style Plastic Cases
• Custom Shipping Crates for Large Items
• In-house Stress-relieving (Heat Treat)
• Recalibration Services
• Mechanical Gauges
• Industries Served: Aerospace, Primary Metals,
Power Generation, Oil & Gas, Commercial
Aviation, R&D, Government/Military,
Petrochemical, Medical, Automotive
We believe that our success depends on ensuring the
success of our customers by providing comprehensive,
consistent quality in everything we do.