API 5L Line Pipe

API 5L is a standard for steel pipes that are designed for transporting oil and gas. These pipes are made from carbon steel and are available in two different types: seamless and welded (including ERW and SAW). This standard specifies requirements for the manufacture of two product specification levels (PSL 1 and PSL 2) steel pipes for use in pipeline transportation systems in the petroleum and natural gas industries. This standard outlines the specifications for line pipes and is used to implement steel pipes in pipeline transportation systems.

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API 5L Specification

The API 5L product comes in a variety of dimensions, with production procedures adhering to the highest industry standards. The steel grades used in its manufacture are top-notch, ensuring durability and longevity. The surface coatings are designed to withstand harsh conditions, while the end types and joint methods are tailored to facilitate easy installation. Our machining services are also available to customize the product to your specific needs.

Standard	API Spec 5L 46th 2018
Procedure	ERW, SMLS, SSAW, LSAW
Dimensions	10.3mm ~ 2134mm
	1/8″ ~ 84″
	1.7 ~ DN400
Thickness	1.7mm ~ 52mm
Thickness	SCH5S, SCH10, SCH20, SCH30, SCH40, STD, XXS, SCH60, SCH100, SCH120, SCH140, SCH160
Unit Length	3 ~ 18 mtrs
Steel Grade	API 5L Gr. B
	API 5L X42
	API 5L X46
	API 5L X52
	API 5L X56
	API 5L X60
	API 5L X65
	API 5L X70
	API 5L X80
Surface Coating	Black Lacquer,Varnishing, Oiling, Hot Dip Galvanizing
Surface Coating	FBE, 2PP, 3PP, 2PE, 3PE
End Type	Plain, Bevelled, Threaded, Grooved, Shouldered
Joint Method	Fitting, Flange, Coupling, Clamp, Pipe Shoulder, Welding
Pipe Machining	Welding, Bending, Hole Drilling, Punching, Swaging, Tapering, Flaring, Expanding

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API 5L Dimension Table

Our API 5L product comes in a wide range of sizes, catering to various pipeline requirements. The dimension table provides a comprehensive overview of the product’s size range, including diameter, wall thickness, and weight per unit length.

Chemical Requirements of API 5L

The chemical composition of API 5L ensures its ability to withstand harsh conditions. The product is designed with a balance of elements that enhance its strength, durability, and resistance to corrosion.

Elements	Grade A	Grade B	Grade C
Carbon max. %	0.25	0.3	0.35
Manganese %	0.27 to 0.93	0.29 to 1.06	0.29 to 1.06
Phosphorous, max. %	0.025	0.025	0.025
Sulfur, max. %	0.025	0.025	0.025
Silicon, min. %	0.1	0.1	0.1

Mechanical Requirements of API 5L

API 5L’s mechanical properties, including its yield strength, tensile strength, and hardness, are meticulously tested to ensure it can withstand the pressures of pipeline transportation.

	Grade A	Grade B	Grade C
Tensile Strength, min., psi	48,000	60,000	70,000
Yield Strength, min., psi	30,000	35,000	40,000

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Steel Grades in API 5L

API 5L is a robust product designed to meet the rigorous demands of the oil and gas industry. API 5L covers a variety of steel grades. The materials used for these pipes include grades such as B, X42, X46, X52, X56, X60, X65, X70, and X80, which are suitable for use in onshore, offshore, and sour services.

API 5L Product Specification Level (PSL)

API 5L specification includes two product specification levels (PSLs). These are PSL1 and PSL2.

API 5L PSL-1

PSL-1 is a standard quality for line pipe. PSL-1 pipes are available in Grades A25 through X70.

API 5L PSL-2

PSL-2 is a higher standard than PSL-1. PSL-2 pipes are available in Grade B through X80.