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Eastern Steel Manufacturing Co.,Ltd is a leading manufacturer and distributor of seamless steel pipe, welded steel pipe, OCTG products and fittings. We supply first-step processing, semi-finished parts and finished parts to help our clients meet fabrication requirements beyond their capacity or to improve operations by moving forward the pre-production processing.
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In this column you can find the steel pipe related articles you need, including industry trends, product standards and materials, and some technical guidelines.
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Eastern Steel Manufacturing Co.,Ltd not only improve product production and sales services, but also provide additional value-added services. As long as you need, we can complete your specific needs together.
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Eastern Steel Manufacturing Co.,Ltd not only improve product production and sales services, but also provide additional value-added services. As long as you need, we can complete your specific needs together.
Projects
Many years of large-scale project experience in various fields（Oil & Gas, Construction, Power Energy, Marine & Offshore, Water Treatment, Exploration & Drilling Services, Pipeline & Petrochemical etc.）, professional project team is responsible from receiving until the end of the project.
API 5L PSL1 is a steel pipe material standard developed by the American Petroleum Institute (API), primarily used for oil and natural gas transportation. This standard ensures the steel pipe possesses sufficient strength, toughness, and corrosion resistance to withstand complex transportation environments and demanding operating pressures.
API 5L PSL1 material generally refers to a carbon steel grade. "PSL1" stands for Product Specification Level 1. This is a set of specific performance and quality requirements for the API 5L standard.
This steel pipe has strict specifications for chemical composition, mechanical properties, weldability, and non-destructive testing to ensure its safety and reliability in practical applications.
The PSL1 standard requires that seamless carbon steel pipe undergo tensile testing at room temperature and meet specific mechanical property requirements. These requirements include tensile strength, yield strength, elongation, and impact energy.
PSL1 seamless carbon steel pipe is typically used to transport fluids such as oil and natural gas, requiring high corrosion resistance and pressure resistance.
Furthermore, since these fluids often involve high temperatures and pressures, the pipe also requires high resistance to these temperatures and pressures.
|
Chemical composition（Max.） |
C |
Mn |
P |
S |
V |
Nb |
Ti |
|
Seamless pipe |
0.28% |
1.20% |
0.03% |
0.03% |
a,b |
a,b |
b |
|
Welded pipe |
0.26% |
1.20% |
0.03% |
0.03% |
b |
b |
b |
|
Note |
a.Nb + V ≤ 0.06%, b.Nb + V + Ti ≤ 0.15% |
||||||
The mechanical properties of PSL1 vary depending on the grade:
|
Pipe grade |
Pipe body of seamless pipes |
||
|
Yield strength |
Tensile strength |
Elongation |
|
|
MPa (psi) min |
MPa (psi) min |
% min |
|
|
B |
245(35 500) |
415(60 200) |
c |
|
X42 |
290(42 100) |
415(60 200) |
c |
|
X46 |
320(46 400) |
435(63 100) |
c |
|
X52 |
360(52 200) |
460(66 700) |
c |
|
X56 |
390(56 600) |
490(71 100) |
c |
|
X60 |
415(60 200) |
520(75 400) |
c |
|
X65 |
450(65 300) |
535(77 600) |
c |
|
X70 |
485(70 300) |
570(82 700) |
c |
Compared to PSL2, PSL1 has fewer testing requirements: impact (Charpy) testing is generally not required, and non-destructive testing (NDT) is not mandatory. The mechanical and chemical properties of PSL1 are generally minimum standards and are not suitable for use in extreme conditions or for high-specification pipelines.
Oil and Gas
API 5L PSL1 seamless carbon steel pipe is widely used in oil and gas pipeline systems, particularly in applications where safety and durability are paramount.
These pipes are not only capable of withstanding high pressures and high flow rates in oil and gas transportation, but also maintain stable performance in harsh environments and corrosive media.
Refineries and Chemical Plants
API 5L-B PSL1 steel pipe is also commonly used in refineries, chemical plants, and other related industrial sectors for the construction and maintenance of various fluid conveying systems.
Its superior mechanical properties and good weldability ensure excellent connectivity and overall performance in complex pipeline networks.
PSL1 and PSL2 have different quality control requirements defined in the API 5L standard. Simply put, PSL2 has more stringent technical specifications than PSL1, including chemical composition, mechanical properties, and manufacturing processes.
During the production process, PSL2-grade steel pipe undergoes more stringent quality inspections and testing to ensure stable and reliable product performance. This includes tighter dimensional tolerances, surface finish, and non-destructive testing.
PSL2-grade steel pipe undergoes more rigorous inspections and testing before shipment. For example, hydrostatic testing and non-destructive testing are all designed to ensure product quality meets higher standards.
|
Standard |
Steel Grade |
Outer Diameter |
Wall Thickness |
|
API5L PSL1 |
B, X42、X46, X52, X56, X60, X65, X70 |
21.3-1067mm 1/2”-42” |
2-150mm |
|
API5L PSL2 |
BN, X42N, X46N, X52N, X56N, X60N, BQ, X42Q , X46Q, X52Q, X56Q, X60Q, X65Q, X70Q, X80Q, X90Q, X100Q |
21.3-1067mm 1/2”-42” |
2-150mm |
PSL1 carbon steel pipe is generally seamless. PSL1 carbon steel pipe generally refers to seamless carbon steel pipe that meets the ASTM A106/API 5L standard and is commonly used in high-pressure, high-temperature applications (such as oil pipelines).
PSL1 and PSL2 represent two product specification levels, not specific materials.
Common materials used under this standard include carbon steel (carbon content ≤ 0.26%) and low-alloy steel (with added elements such as Cr and Mo).
API 5L PSL1 seamless carbon steel pipe is a common industrial transmission pipe with stable performance, reasonable cost, and a comprehensive range of specifications. It is the most common and cost-effective steel pipe, primarily used for oil and natural gas transportation.
E-mail: sales@eastern-steels.com
