Piping Industry

API 5L Grade B Pipe

API 5L Grade B Seamless Pipe, API 5L Gr. B ERW pipe suppliers

API 5L is a specification which adheres to the standard for the ISO 3183. The materials, produced under this specification, say the API 5L Grade B Seamless Pipe are typically used in the transportation of various fluids and gases. For instance, the specified API 5L Grade B Carbon Steel Pipe is generally used in applications involving industries such as petroleum, petrochemical, as well as the natural gas industries. One such instance, where the API 5L Grade B PSL1 Material proves to be particularly useful is when they are used in sour wells. In fact, the API 5L specification Schedule 40 Grade B Pipe tend to be well suited for use in sour service, because the API 5L Grade B Erw Pipe has the ability to resist sulphide stress related cracking. Usually in sour service wells, conventionally used carbon steel popes are susceptible to cracking, due to deposition of Hydrogen sulphide on the inner layer of these pipes. Hydrogen sulphide, deposited on the inner walls of the API 5L Grade B Pipe makes steel pipes brittle. Since hydrogen sulphide gas reacts with water, as a result of which the free hydrogen molecule gets deposited in the inner walls of conventional steel pipes, thereby leaving it brittle. Addition of elements such as, Molybdenum and chromium can raise the resistance levels of the API 5L Gr B Pipe to both cracking and corrosion as well. Apart from offering these properties, the API 5L Grade B PSL2 pipes are known to have a rigid and compact design along with the Grade B Welded Pipe having precise and stable dimensions, properties which make them attractive. The Grade B Dsaw Pipe can also be machine bored. Additionally, the Sch 80 Grade B Pipe offers optimum efficiency whilst bearing pressure.

API 5L Grade B Pipe

API 5L Grade B Pipe

API 5L Grade B Seamless Pipe

API 5L Grade B Seamless Pipe

API 5L Gr. B Pipe specifications
API 5L Gr.B Seamless 1/2” NB – 60” NB
API 5L Gr.B SAW 16” NB – 100” NB
API 5L Gr.B ERW 1/2” NB – 24” NB
API 5L Gr.B LSAW / DSAW 16’OD TO 54′ OD (8 MM TO 50 MM THK)
Standard API, ASTM, ISO 3183, ASME
Test HIC / SSC TEST, NACE MR0175 / TM0177 / TM0284, H2 SERVICE, IBR etc.
Wall Thick. SCH10, 20, 30, STD, 40, 60, XS, 80, 100, 120, 140, 160, XXS DIN, JIS
PSL Level
  • API 5L Grade B PSL 1 used for for offshore service
  • API 5L Grade B PSL 2 (Most selling grade) used for sour service
Origins European, Korean, Indian, Japanese, US, Ukraine, Russian
API 5L Grade B Pipe Types

API 5L Grade B Carbon Steel Pipe

API 5L Grade B Line Pipe
API 5L Grade B Seamless Pipe
API 5L Grade B Erw Pipe
API 5L Grade B Welded Pipe
API 5L Gr B SAW

service

API 5L Gr B Low Temperature Pipe

API 5L Carbon Steel Pipe
API 5L Lsaw Pipe
API 5L Dsaw Pipe
API 5L PSL2 Pipe
API 5L PSL1 Pipe

service
Coating for API 5L Gr.b Seamless Pipe
  • Powder Coated
  • Epoxy Coated
  • 3LPE Coated
  • 3LPP Coating
  • Cement Lined Steel
  • Internal Coating
  • PTFE Lined
  • Bare Steel
  • Black
  • PE Coated
  • Galvanized
API 5L Grade B Nominal Pipe sizes

Size Range: 2" to 24" O.D.

Schedule Chart of API 5L Grade B Pipe
NPS
(in)
OD
(in)
SCH
SCH 10 SCH 20 SCH 30 SCH STD SCH 40 SCH 60 SCH XS SCH 80 SCH 100 SCH 120 SCH 140 SCH 160 SCH XXS
Wall Thickness (in)
1/8 0.405 0.068 0.068 0.095 0.095
1/4 0.540 0.088 0.088 0.119 0.119
3/8 0.675 0.091 0.091 0.126 0.126
1/2 0.840 0.109 0.109 0.147 0.147 0.187 0.294
3/4 1.050 0.113 0.113 0.154 0.154 0.219 0.308
1 1.315 0.133 0.133 0.179 0.179 0.250 0.358
1 1/4 1.660 0.140 0.140 0.191 0.191 0.250 0.382
1 1/2 1.900 0.145 0.145 0.200 0.200 0.281 0.400
2 2.375 0.154 0.154 0.218 0.218 0.344 0.436
2 1/2 2.875 0.203 0.203 0.276 0.276 0.375 0.552
3 3.500 0.216 0.216 0.300 0.300 0.438 0.600
3 1/2 4.000 0.226 0.226 0.318 0.318
4 4.500 0.237 0.237 0.337 0.337 0.438 0.531 0.674
5 5.563 0.258 0.258 0.375 0.375 0.500 0.625 0.750
6 6.625 0.280 0.280 0.432 0.432 0.562 0.719 0.864
8 8.625 0.250 0.277 0.322 0.322 0.406 0.500 0.500 0.594 0.719 0.812 0.906 0.875
10 10.750 0.250 0.307 0.365 0.365 0.500 0.500 0.594 0.719 0.844 1.000 1.125 1.000
12 12.750 0.250 0.330 0.375 0.406 0.562 0.500 0.688 0.844 1.000 1.125 1.312 1.000
14 14.000 0.250 0.312 0.375 0.375 0.438 0.594 0.500 0.750 0.938 1.094 1.250 1.406
16 16.000 0.250 0.312 0.375 0.375 0.500 0.656 0.500 0.844 1.031 1.219 1.438 1.594
18 18.000 0.250 0.312 0.438 0.375 0.562 0.750 0.500 0.938 1.156 1.375 1.562 1.781
20 20.000 0.250 0.375 0.500 0.375 0.594 0.812 0.500 1.031 1.281 1.500 1.750 1.969
22 22.000 0.250 0.375 0.500 0.375 0.875 0.500 1.125 1.375 1.625 1.875 2.125
24 24.000 0.250 0.375 0.562 0.375 0.688 0.969 0.500 1.219 1.531 1.812 2.062 2.344
30 30.000 0.312 0.500 0.625 0.375 0.500
32 32.000 0.312 0.500 0.625 0.375 0.688
34 34.000 0.312 0.500 0.625 0.375 0.688
36 36.000 0.312 0.500 0.625 0.375 0.750
42 42.000 0.500 0.625 0.375 0.750

API 5L Grade B Carbon Steel Pipe yield strength
Grade A PSL1
Min Yield Strength: 30,000 psi
Max Yield Strength: None
Min Tensile Strength: 48,000 psi

Grade B PSL1 PSL2
Min Yield Strength: 35,000 psi 35,000 psi
Max Yield Strength: None 65,000 psi
Min Tensile Strength: 60,000 psi 60,000 psi
Max Tensile Strength: None 110,000 psi
API 5L Grade B Pipe Chemical Properties
PSL

C (Max)

Mn (Max)

P (Max)

S (Max)

PSL1

0.26

1.20

0.030

0.030

PSL2

0.22

1.20

0.025

0.015

API 5L Grade B Pipe weight, pressure and Temperature rating
NPS OD SCH WT (mm) Temp. (°C)
204 260
Allowable Stress (MPa)
137.9 130.3
Maximum Allowable Stress (MPa)
1/2 21.3 STD 40 2.77 34.5 32.6
3/4 26.7 STD 40 2.87 28.1 26.5
XS 80 3.91 39.4 37.2
1 33.4 STD 40 3.38 26.3 24.8
XS 80 4.55 36.3 34.3
1.1/4 42.2 STD 40 3.56 21.6 20.4
XS 80 4.85 30.2 28.5
160 6.35 40.6 38.4
1.1/2 48.3 STD 40 3.68 19.4 18.4
XS 80 5.08 27.4 25.9
160 7.14 39.8 37.6
2 60.3 STD 40 3.91 16.4 15.5
XS 80 5.54 23.7 22.4
160 8.74 38.9 36.8
2.1/2 73 STD 40 5.16 17.9 17
XS 80 7.01 24.8 23.5
160 9.53 34.7 32.8
3 88.9 STD 40 5.49 15.6 14.7
XS 80 7.62 22 20.8
160 11.13 33.1 31.3
4 114.3 STD 40 6.02 13.2 12.5
XS 80 8.56 19.1 18
120 11.13 25.2 23.8
160 13.49 31 29.3
XXS 17.12 40.4 38.2
5 141.3 STD 40 6.55 11.6 10.9
XS 80 9.53 17.1 16.1
120 12.7 23.1 21.9
160 15.88 29.4 27.8
XXS 19.05 35.9 33.9
6 168.3 STD 40 7.11 10.5 9.9
XS 80 10.97 16.5 15.6
120 14.27 21.8 20.6
XXS 160 18.26 28.3 26.8
8 219.1 20 6.35 7.1 6.7
30 7.04 7.9 7.5
STD 40 8.18 9.3 8.7
60 10.31 11.7 11.1
XS 80 12.7 14.6 13.8
100 15.09 17.5 16.5
120 18.26 21.4 20.2
140 20.62 24.3 23
XXS 22.23 26.4 24.9
160 23.01 27.4 25.8
10 273.1 20 6.35 5.7 5.4
30 7.8 7 6.6
STD 40 9.27 8.4 7.9
XS 60 12.7 11.6 11
80 15.09 13.9 13.1
100 18.26 16.9 16
120 21.44 20 18.9
XXS 140 25.4 24 22.7
160 28.58 27.3 25.8
12 323.9 20 6.35 4.8 4.5
30 8.38 6.4 6
STD 9.53 7.2 6.9
40 10.31 7.9 7.4
XS 12.7 9.7 9.2
60 14.27 11 10.4
80 17.48 13.5 12.8
100 21.44 16.8 15.8
XXS 120 25.4 20 18.9
140 28.58 22.7 21.4
160 33.32 26.8 25.3
14 355.6 10 6.35 4.4 4.1
20 7.92 5.5 5.2
STD 30 9.53 6.6 6.2
40 11.13 7.7 7.3
XS 12.7 8.8 8.4
60 15.09 10.6 10
80 19.05 13.4 12.7
100 23.83 17 16
120 27.79 20 18.9
140 31.75 23 21.7
160 35.71 26.1 24.6
16 406.4 10 6.35 3.8 3.6
20 7.92 4.8 4.5
STD 30 9.53 5.8 5.4
XS 40 12.7 7.7 7.3
60 16.66 10.2 9.6
80 21.44 13.2 12.5
100 26.19 16.3 15.4
120 30.96 19.4 18.4
140 36.53 23.1 21.9
160 40.49 25.8 24.4
18 457 10 6.35 3.4 3.2
20 7.92 4.2 4
STD 9.53 5.1 4.8
XS 30 11.13 6 5.7
12.7 6.8 6.5
40 14.27 7.7 7.3
60 19.05 10.4 9.8
80 23.83 13.1 12.3
100 29.36 16.2 15.3
120 34.93 19.5 18.4
140 39.67 22.3 21.1
160 45.24 25.7 24.3
20 508 10 6.35 3 2.9
STD 20 9.53 4.6 4.3
XS 30 12.7 6.1 5.8
40 15.09 7.3 6.9
60 20.62 10.1 9.5
80 26.19 12.9 12.2
100 32.54 16.2 15.3
120 38.1 19.1 18.1
140 44.45 22.5 21.3
160 50.01 25.5 24.1
24 610 10 6.35 2.5 2.4
STD 20 9.53 3.8 3.6
XS 12.7 5.1 4.8
30 14.27 5.7 5.4
40 17.48 7.1 6.7
60 24.61 10 9.5
80 30.96 12.7 12
100 38.89 16.1 15.2
120 46.02 19.2 18.2
140 52.37 22 20.8
160 59.54 25.3 23.9

 

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