API Steel Pipes
Special Grade Steel Pipes (API 5L X52)

The API 5L or pipeline is commonly used in the transportation of petroleum, electricity, water, and natural gas. The alternate use of these grade API Pipes is also piling.

Piling process is carried out in infrastructural and construction projects and activities. These API 5L X52 pipes are used in making of Kelly Bars which are then used in piling machines of MAIT, BAUER, XCMG, SANY and Zoomlion among others.

The American Petroleum Institute prepares and publishes API 5L standards all over the world.

The API 5L or pipeline is commonly used in the transportation of petroleum, electricity, water, and natural gas. The alternate use of these grade API Pipes is also piling.

Piling process is carried out in infrastructural and construction projects and activities. These API 5L X52 pipes are used in making of Kelly Bars which are then used in piling machines of MAIT, BAUER, XCMG, SANY and Zoomlion among others.

The American Petroleum Institute prepares and publishes API 5L standards all over the world.

Technical Specifications
  • API 5L / ISO 3183 Hot Rolled Steel
  • Seamless / ERW / Welded / Fabricated / CDW
  • Sizes range from 3/8″ NB to 30″ NB in outer diameter (Nominal Bore Size)
  • Thickness of the wall: From Schedule 20 to XXS (Heavier On Request) Thickness up to 250 mm
  • 5–7 metres, 09–13 metres, single random length, double random length, and custom sizes are available
  • Ends of Pipes: Plain Ends, Beveled Ends, and Coupling
Seamless and Welding API 5L Pipes

Seamless and welding API 5L Pipe are used in oil and gas pipelines, and in piling as well. There are three types of ends: plain, threaded, and socket. Grade B, X42, X46, X52, X56, X65, and X70 are the most common steel grades  in API Pipes

Seamless Pipe Welding Pipe
Steel Grade: B, X42, X52, X60, X65, X70 Steel Grade: B, X42, X52, X60, X65, X70, X80
Dimension: 1″/2″ – 24″ Dimension: 2″ – 30″
Process:hot rolling, hot expanding Process: ERW, SSAW, LSAW, HFW, JCOE.
API 5L PIPE PSL1 Chemical and Mechanical Properties
API 5L PIPE PSL1
 Chemical Composition Mechanical Property
C (Max)
Mn (Max)
P (Max)
S (Max)
 TENSILE ( Min ) YIELD ( Min )
Psi X 1000 Mpa Psi X 1000 Mpa
Grade A25
 CL I 0.21 0.6 0.03 0.03
45
310
25
172
CL II 0.21 0.6 0.03 0.03
Grade A 0.22 0.9 0.03 0.03 48 331 30 207
Grade B 0.26 1.2 0.03 0.03 60 414 35 241
Grade X42 0.26 1.3 0.03 0.03 60 414 42 290
Grade X46 0.26 1.4 0.03 0.03 63 434 46 317
Grade X52 0.26 1.4 0.03 0.03 66 455 52 359
Grade X56 0.26 1.4 0.03 0.03 71 490 56 386
Grade X60 0.26 1.4 0.03 0.03 75 517 60 414
Grade X65 0.26 1.45 0.03 0.03 77 531 65 448
Grade X70 0.26 1.65 0.03 0.03 82 565 70 483
API 5L PIPE PSL2 Chemical And Mechanical Properties
API 5L PIPE PSL2
Chemical Composition
Mechanical Property
C Mn P S Tensile Yield
C. E. IMPACT ENERGY
(Max) (Max) (Max) (Max) Psi x 1000 Mpa Psi x 1000 Mpa PCM IIW J FT/LB
Grade B 0.22 1.2 0.025 0.015 60 – 110 414 – 758 35 – 65 241 – 448 0.25 0.43 T/L 27/41 T/L 20/30
Grade X42 0.22 1.3 0.025 0.015 60 – 110 414 – 758 42 – 72 290 – 496 0.25 0.43 T/L 27/41 T/L 20/30
Grade X46 0.22 1.4 0.025 0.015 63 – 110 434 – 758 46 – 76 317 – 524 0.25 0.43 T/L 27/41 T/L 20/30
Grade X52 0.22 1.4 0.025 0.015 66 – 110 455 – 758 52 – 77 359 – 531 0.25 0.43 T/L 27/41 T/L 20/30
Grade X56 0.22 1.4 0.025 0.015 71 – 110 490 – 758 56 – 79 386 – 544 0.25 0.43 T/L 27/41 T/L 20/30
Grade X60 0.22 1.4 0.025 0.015 75 – 110 517 – 758 60 – 82 414 – 565 0.25 0.43 T/L 27/41 T/L 20/30
Grade X65 0.22 1.45 0.025 0.015 77 – 110 531 – 758 65 – 82 448 – 565 0.25 0.43 T/L 27/41 T/L 20/30
Grade X70 0.22 1.65 0.025 0.015 82 – 110 565 – 758 70 – 82 483 – 565 0.25 0.43 T/L 27/41 T/L 20/30
Grade X80 0.22 1.9 0.025 0.015 90 – 120 621 – 827 80 – 102 552 – 705 0.25 0.43 T/L 27/41 T/L 20/30
API 5L Equivalent Grades (ASTM, EN, DIN)
Line Pipe Materials: Werkstoff vs EN vs API
Werkstoff/DIN EN API
1.0486 StE 285 –
API 5L Grade X42
1.0562 StE 355 P355N
API 5L Grade X52
1.8902 StE 420 P420N
API 5L Grade X60
1.8905 StE 460 P460N
API 5L Grade X70
High Yield Steel Pipes
1.0457 StE 240.7 L245NB API 5L Grade B
1.0484 StE 290.7 L290NB
API 5L Grade X42
1.0582 StE 360.7 L360NB
API 5L Grade X52
1.8972 StE 415.7 L415NB
API 5L Grade X60
API 5L PSL1 VS. API 5L PSL2
PSL GRADE C, a Mn a P S Si V Nb Ti Other CEIIW CEpcm
1 0.24 1.4 0.025 0.015 0.45 0.1 0.05 0.04 b,c 0.043 0.025
2 0.28 1.4 0.03 0.03 – b b b – – –
Test Requirements
Test Requirement API 5L PSL1 API 5L PSL2
Charpy test None required
Required for all grades
Seamless NDT test Only if purchaser specifies SR4 SR4 mandatory
Certification Certificates when specified per SR15
Certificates (SR 15.1) mandatory
Traceability Traceable only until all tests are passed, unless SR15 is specified
Traceable after completion of tests (SR 15.2) mandatory
Hydrostatic Test Required Required