API 5L Steel Pipe

API 5L is the implementation standard of steel pipe for pipeline transportation systems and the specification for line pipe.
API 5L steel pipe is carbon steel pipe used for oil and gas transmissions, it includes the pipes manufactured in seamless and welded (ERW, SAW), designed for transporting oil, gas, and water. These steel pipes are known for their durability, corrosion resistance, and strength, making them suitable for both onshore and offshore applications.

Manufacturing types: Available in seamless and welded (ERW, LSAW, SSAW/HSAW) forms.
Applications: Primarily used in oil and gas transmission, but also for subsea pipelines, high-pressure steam piping, and process facility piping.
Common uses
Transporting crude oil and natural gas.
Subsea pipelines for offshore fields.
High-pressure steam lines in industrial plants.
Structural and architectural applications requiring high-pressure resistance.
Conveying chemicals and fluids in processing facilities.

Sizes
Seamless pipe from 2″ NPS to 36″ OD
ERW pipe from 2″ NPS to 24″ OD
DSAW pipe from 20″ to 48″ OD

Grade examples
API 5L Grade B: A common and widely used material in the industry.
API 5L X52: A higher-strength pipe with a minimum yield strength of 52,000 psi.
API 5L X60: A strong pipe with a minimum yield strength of 60,000 psi, suitable for high-stress systems.

Dimensional Tolerance Checks(Per ASTM A530/API 5L)

Parameter	Tolerance	Instrument Used
Outer Diameter(OD)	±1%of nominal OD (or±0.79mm)	Pi tape/Laser micrometer
Wall Thickness(WT)	±12.5%(SCH40 and below)	Ultrasonic thickness gauge(UTG)
Length	±3mm for random,±6mm for cut-length	Calibrated tape measure
Straightness	≤0.2%of total length	Optical comparator
Bevel Angle (for welding)	30°-35°(±5°)	Bevel protractor

Certificates

Our commitment to quality is backed by international certifications:

ISO 9001:2015 Quality Management System

CE Marking for European market compliance

GOST-R certification for Russian market standards

API Spec Q1 for oil and gas industry requirements

 

 

 

 

 

 

 

 

API 5L Line Pipe Manufacturers China

JSFITTINGS manufactures the API 5L line pipe required to transport natural gas, crude oil, and liquid gases from the producing field to the refinery. We manufacture line pipe according to the API 5L standard, which is supported by our USP of world-class quality, committed delivery periods, and better service at the most competitive prices.
MSL API 5L line pipes come in a variety of sizes and wall thicknesses, manufactured in China, to meet our customers’ requirements. We offer both ERW and Seamless to meet the challenge of all transmission conditions.

JSFittings, as an API Line pipe manufacturer in China, is a leading name worldwide. We are the one-stop solution for our wide range of products. JSFITTINGS has established itself as a most trusted brand, especially in the oil and gas sector.

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