Carbon Steel API 5L Pipes – Reliable Industrial Line Pipes

KVN Carbon Steel API 5L line pipes and tubes are engineered for reliability and efficiency in demanding environments, offering excellent performance in both seamless and welded forms. These pipes are known for their strength, affordability, and versatility, making them a preferred choice for industrial-scale applications across oil, gas, and infrastructure projects. The products are available in a variety of sizes, thicknesses, and end configurations such as plain ends, beveled ends, screwed, or threaded connections to meet client-specific operational needs. We serve a broad international clientele, with major supply destinations including India, the United Arab Emirates (UAE), the Kingdom of Saudi Arabia (KSA), Kuwait, Qatar, the Sultanate of Oman, Iran, and Iraq.

Technical Overview

The API 5L carbon steel line pipe range includes grades such as B, X42, X46, X52, X56, X60, and X65, conforming to PSL1 and PSL2 specifications. Pipes are manufactured in forms such as ERW (Electric Resistance Welded), seamless, cold drawn, fabricated, and custom-welded variants. Available lengths include single random, double random, and customer-specified cuts. Cross-sectional profiles range from round to square, rectangular, and hydraulic tubing formats. These pipes feature surface finishes including black paint, galvanization, or anti-corrosion oil, with end protection typically applied using plastic caps. Rigorous quality testing such as hydrostatic tests for leak detection, bend and flattening tests for structural integrity, and CVN impact tests for PSL2 grades ensure compliance with global standards. Specifications cover critical aspects such as chemical composition, electric weld integrity, fracture toughness, carbon equivalency, and heat treatment parameters.

Applications & Industry Use

API 5L and LSAW carbon steel pipes and tubes are widely implemented in high-stakes sectors requiring resilience and durability. They are integral to oil and gas transmission, petrochemical processing, power generation (thermal and nuclear), boiler and pressure vessel manufacturing, and pipeline infrastructure. These pipes are also used in marine construction, shipbuilding, heat exchangers, condensers, pulp and paper industries, and fossil fuel power plants. Their robustness under pressure, resistance to corrosion, and adaptability in different operating environments make them suitable for both critical applications and general-purpose engineering. For international delivery, packaging is carefully managed based on destination and handling requirements—ranging from plastic wrapping and steel strip bundling to wooden box crating—to ensure product integrity throughout the logistics chain.

API 5L Pipe Specification :

API 5L / ISO 3183 Hot Rolled.

API 5L Pipe Dimension :

ASTM, ASME, API

API 5L Pipe Outer Diameter Size : :

3/8" NB To 30" NB (Nominal Bore Size)

API 5L Pipe Wall Thickness : :

Schedule 20 To Schedule XXS (Heavier On Request) Up to 250 mm Thickness

API 5L Pipe Grades : :

API 5L GRADE B PSL1, PSL 2 / API 5L X42 PSL1, PSL 2 / API 5L X46 PSL1, PSL 2 / API 5L X52 PSL1, PSL 2 / API 5L X56 PSL1, PSL 2 / API 5L X60 PSL1, PSL 2 / API 5L X65 PSL1, PSL 2 / X70 PSL1, PSL 2 / API 5L X70 PSL1 / PSL2 / API 5L X80 PSL1, PSL 2 / ISO 3183 L245 PSL1, PSL 2, ISO 3183 L290 PSL1, PSL 2, ISO 3183 L320 PSL1, PSL 2, ISO 3183 L360 PSL1, PSL 2, ISO 3183 L390 PSL1, PSL 2, ISO 3183 L415 PSL1, PSL 2, ISO 3183 L450 PSL1, PSL 2, ISO 3183 L485 PSL1, PSL 2

API 5L Pipe Length :

5 To 7 Meters, 09 To 13 Meters, Single Random Length, Double Random Length And Customize Size.

API 5L Pipe Schedules :

SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS

API 5L Pipe Coating :

Epoxy Coating / Colour Paint Coating / 3LPE Coating.

Packing :

Packed in Wooden Boxes, Plastic Bags, Steel Strips Bundled, or as per Customers Requests

API 5L Pipe End :

Plain End, Beveled End, Treaded, Coupling

Surface :

Black painting, varnish paint, anti rust oil, hot galvanized, cold galvanized, 3PE

API 5L PSL1 Line Pipe Chemical Composition and Mechanical Properties

API 5L PIPE GRADE PSL1 CHECMICAL AND MECHANICAL PROPERTIES
GRADE		Chemical Composition				Mechanical Property
		C (Max)	Mn (Max)	P (Max)	S (Max)	TENSILE ( Min )		YIELD ( Min )
		C (Max)	Mn (Max)	P (Max)	S (Max)	Psi X 1000	Mpa	Psi X 1000	Mpa
A25	CL I	0.21	0.60	0.030	0.030	45	310	25	172
A25	CL II	0.21	0.60	0.030	0.030	45	310	25	172
A		0.22	0.90	0.030	0.030	48	335	30	210
B		0.28	1.20	0.030	0.030	60	415	35	245
X42		0.28	1.30	0.030	0.030	60	415	42	290
X46		0.28	1.40	0.030	0.030	63	435	46	320
X52		0.28	1.40	0.030	0.030	66	460	52	360
X56		0.28	1.40	0.030	0.030	71	490	56	390
X60		0.28	1.40	0.030	0.030	75	520	60	415
X65		0.28	1.45	0.030	0.030	77	535	65	450
X70		0.28	1.65	0.030	0.030	82	570	70	485

API 5L PSL2 Line Pipe Chemical Composition and Mechanical Properties

API 5L PIPE GRADE PSL2 CHECMICAL AND MECHANICAL PROPERTIES
GRADE	Chemical Composition				Mechanical Property
	C (Max)	Mn (Max)	P (Max)	S (Max)	Tensile		Yield		C. E. IMPACT ENERGY
	C (Max)	Mn (Max)	P (Max)	S (Max)	Psi x 1000	Mpa	Psi x 1000	Mpa	PCM	IIW	J	FT/LB
B	0.22	1.20	0.025	0.015	60 - 110	414 - 758	35 - 65	241 - 448	0.25	0.43	T/L 27/41	T/L 20/30
X42	0.22	1.30	0.025	0.015	60 - 110	414 - 758	42 - 72	290 - 496	0.25	0.43	T/L 27/41	T/L 20/30
X46	0.22	1.40	0.025	0.015	63 - 110	434 - 758	46 - 76	317 - 524	0.25	0.43	T/L 27/41	T/L 20/30
X52	0.22	1.40	0.025	0.015	66 - 110	455 - 758	52 - 77	359 - 531	0.25	0.43	T/L 27/41	T/L 20/30
X56	0.22	1.40	0.025	0.015	71 - 110	490 - 758	56 - 79	386 - 544	0.25	0.43	T/L 27/41	T/L 20/30
X60	0.22	1.40	0.025	0.015	75 - 110	517 - 758	60 - 82	414 - 565	0.25	0.43	T/L 27/41	T/L 20/30
X65	0.22	1.45	0.025	0.015	77 - 110	531 - 758	65 - 82	448 - 565	0.25	0.43	T/L 27/41	T/L 20/30
X70	0.22	1.65	0.025	0.015	82 - 110	565 - 758	70 - 82	483 - 565	0.25	0.43	T/L 27/41	T/L 20/30
X80	0.22	1.90	0.025	0.015	90 - 120	621 - 827	80 - 102	552 - 705	0.25	0.43	T/L 27/41	T/L 20/30

API 5L Line Pipe Grades

API 5L GRADE B Line Pipe	API 5L X56 Line Pipe
API 5L X42 Line Pipe	API 5L X60 Line Pipe
API 5L X46 Line Pipe	API 5L X65 Line Pipe
API 5L X52 Line Pipe	API 5L X70 Line Pipe