API Spec 5L is a global standard that outlines the manufacturing criteria for two product specification grades (PSL 1 and PSL 2) of seamless and welded steel pipes utilized in pipeline transportation systems within the oil and gas industry.
The API-5L welded spiral steel pipe is produced using hot-rolled strip or steel plate as the raw material. The strip or steel plate is shaped into a round or special-shaped steel pipe by a forming machine, followed by butt welding of the formed steel pipe using a high-frequency welding unit. PSL1 and PSL2 pipelines entail varying levels of quality requirements. This type of steel pipe offers advantages such as high strength, toughness, corrosion resistance, and ease of welding. API Spec 5L steel pipes are widely utilized in the manufacturing of pipeline steel pipes within the oil and gas industry.
Product Parameters
Product Name
API Spec 5L Steel Pipe
Standard
EN/DIN/JIS/ASTM/BS/ASME/AISI etc.
Outer Diameter
Seamless: 1/4"-36"
Welding: 21.3mm-3620mm
Round Tube: 1/2"-10"
Square Tube/Rectangular Tube: 15x15mm-400x600mm
Wall Thickness
Seamless: 1.25mm-50mm
Welding: 1.65mm-65mm
Length
3-12 meters, Support customization
Surface Process
Bright, Polished, Black
Other Services
Machining(cnc), Centerless Grinding(cg), Heat Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting, Bending, Small Machining, etc.
Chemical Composition
API Spec 5L PSL1
Brand
C
Mn
P
S
B
≤ 0.28
≤ 1.20
≤ 0.030
≤ 0.030
X42
≤ 0.28
≤ 1.30
≤ 0.030
≤ 0.030
X46
≤ 0.28
≤ 1.40
≤ 0.030
≤ 0.030
X52
≤ 0.28
≤ 1.40
≤ 0.030
≤ 0.030
API Spec 5L PSL2
B
≤ 0.24
≤ 1.20
≤ 0.025
≤ 0.015
X42
≤ 0.24
≤ 1.30
≤ 0.025
≤ 0.015
X46
≤ 0.24
≤ 1.40
≤ 0.025
≤ 0.015
X52
≤ 0.24
≤ 1.40
≤ 0.025
≤ 0.015
Mechanical Properties
Standard
Brand
Yield Strength(MPa)
Tensile Strength(MPa)
API Spec 5L PSL1
A25
172
310
A
207
331
B
241
414
X42
290
414
X46
317
434
X52
359
455
X56
386
490
X60
414
517
X65
448
531
X70
483
565
API Spec 5L PSL2
B
290-496
414-758
X42
317-524
434-758
X46
359-531
455-758
X52
386-544
490-758
X56
414-565
517-758
X60
448-600
531-758
X65
483-621
565-758
X70
552-690
621-827
Scope of Application
API Spec 5L specifies the manufacture of two product levels (PSL1 and PSL2). PSL refers to the product specification level established for the API 5L standard. Piping specification classes are classified into PSL1 and PSL2. For pipeline standards, PSL1 and PSL2 pipelines have different levels of quality requirements. API Spec 5L pipeline steel plate is used to manufacture pipeline steel pipes that extract oil, steam, and water on the ground in the oil and gas industry.