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Inspection

Equipment Inspection / Equipment Inspection Details

What is API line pipe

API line pipe is a high-strength steel pipe used for transmission of Oil, Water, Gas, and Petroleum Distillates. Line pipes make the pipeline and are different from casing and tubing. It is a pipeline which carries only one type of fuel. API line pipes are manufactured in a wide range of pipeline diameter sizes. And it with various sizes of thickness walls. But it is manufactured as per specifications established by API.

Size chart of API line pipe

Specification sheet of pipeline

Mechanical Properties:

Standard

Grade

Tensile(Mpa)

Yield(Mpa)

Yield Ratio

Elongation(%)

0℃ Impact Akv(J)

Heat Treatment

API SPEC 5L

B

≥415

245～?40

≤0.80

22

≥40

N

API SPEC 5L

X42

≥415

290～440

≤0.80

21

≥40

N

API SPEC 5L

X52

≥460

360～510

≤0.85

20

≥40

N

API SPEC 5L

X60

≥520

415～565

≤0.85

18

≥40

N

API SPEC 5L

X65

≥535

450～570

≤0.90

18

≥40

H+T

API SPEC 5L

X70

≥570

485～605

≤0.90

18

≥40

H+T


Manufacturing process of API line pipe


Standard of API line pipe

API Spec 5L PSL-1, API Spec 5L PSL-2, ASTM A53, ASTM A252, ASTM A500, AS/NZS 1163, AS/NZS 1074, AS/NZS 2885, ASTM A795, ASTM A135, BS1139, BS1387, EN 10217, EN 10219, EN 10255, JIS G3444, JIS G3452 and etc.

Application of API line pipe


  • Petroleum and natural gas industries

  • Pipeline transportation systems

  • Transmission of petroleum and natural gas


    line pipe inspection services identify defects in new pipe before it is put into service. Our quality post-mill inspection program helps ensure safe and efficient transportation of products throughout the design life of the line.

    All inspections are performed by ASNT-qualified Level I and II inspectors in accordance with API 5L

    Inspection services

    • EMI
    • Ultrasonic (UT)
    • Phased Array
    • Wall thickness measuring
    • Magnetic particle
    • Ring and bevel
    • Weldline
    • Full-length drift (FLD)
    • Special end area (SEA)
    • Tube body—grade

    Inspection systems used
    • Full-body UT systems measuring wall and detecting defects at multiple orientations
    • Single-pass, full-body UT and EMI inspection
    • 360° – 2D Phased Array UT technology uses a single two-dimensional Array to transmit multidirectional ultrasonic beams in a single shot for simultaneous flaw detection
    •  PA – Phased Array system that identifies pipe flaws at multiple orientations along with over 100% UT wall coverage for greater consistency and repeatability
    •  EMI detects longitudinal defects such as laps, seams, and gouges
    • EMI detects transverse defects and three-dimensional defects such as pitting and holes
    •  Wall thickness measurements.

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