Name: API 5L Grade X52 Steel Pipe - High-Quality Petroleum Pipeline Solution
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API 5L Grade X52 Steel Pipe - High-Quality Petroleum Pipeline Solution

API 5L Grade X52 Steel Pipe is a carbon steel pipe designed for petroleum and natural gas transportation, available in seamless and welded types with various end designs.

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Detailed introduction

API 5L Grade X52 Steel Pipe

API 5L Grade X52 Steel Pipe is a high-performance carbon steel pipe specifically designed for the transportation of oil, natural gas, and water. As part of the American Petroleum Institute (API) standards, this pipe offers exceptional durability and reliability for pipeline projects.

Product Specifications：

Property	Value
Material	Carbon Steel
Standard	API 5L
Grade	X52
Types	Seamless / Welded
Outer Diameter Range	406.3mm and above
Wall Thickness	12.7mm and above
Pipe End Types	Plain End, Threaded End, Socket End
Yield Strength	52,000 psi (358 MPa) minimum
Tensile Strength	66,000 psi (455 MPa) minimum

Superior Material Quality

The API 5L Grade X52 Steel Pipe is manufactured from high-quality carbon steel that meets strict API standards. This ensures:

Excellent strength-to-weight ratio
Superior resistance to internal pressure
Enhanced durability in harsh environments
Long service life with minimal maintenance

Versatile Manufacturing Options

Available in both seamless and welded varieties, our API 5L X52 pipes offer flexibility for different project requirements:

Seamless Pipes: Ideal for high-pressure applications with superior structural integrity
Welded Pipes: Cost-effective solution for standard pressure requirements

Customizable End Preparations

To accommodate various connection methods, we offer multiple end preparations:

Plain End: For standard welding applications
Threaded End: For quick assembly and disassembly
Socket End: For secure socket welding connections

API 5L Line Pipe PSL1 Chemical Requirement Chemical Composition for PSL 1 pipe with t ≤ 0.984”

Steel Grade	Mass fraction, % based on heat and product analyses a,g
	C	Mn	P	S	V	Nb	Ti
	max b	max b	max	max	max	max	max
Seamless Pipe
A	0.22	0.9	0.3	0.3	–	–	–
B	0.28	1.2	0.3	0.3	c,	c,	D
X42	0.28	1.3	0.3	0.3
X46	0.28	1.4	0.3	0.3
X52	0.28	1.4	0.3	0.3
X56	0.28	1.4	0.3	0.3
X60	0.28 e	1.40 e	0.3	0.3	f	f	f
X65	0.28 e	1.40 e	0.3	0.3	f	f	f
X70	0.28 e	1.40 e	0.3	0.3	f	f	f
Welded Pipe
A	0.22	0.9	0.3	0.3	–	–	–
B	0.26	1.2	0.3	0.3	c,	c
X42	0.26	1.3	0.3	0.3
X46	0.26	1.4	0.3	0.3
X52	0.26	1.4	0.3	0.3
X56	0.26	1.4	0.3	0.3
X60	0.26 e	1.40 e	0.3	0.3	f	f	f
X65	0.26 e	1.45 e	0.3	0.3	f	f	f
X70	0.26e	1.65 e	0.3	0.3	f	f	f
a. Cu ≤ = 0.50% Ni; ≤ 0.50%; Cr ≤ 0.50%; and Mo ≤ 0.15%,
b. for each reduction of 0.01% below the specified max. concentration for carbon, and increase of 0.05% above the specified max. concentration for Mn is permissible, up to a max. of 1.65% for grades ≥ B, but ≤ = X52; up to a max. of 1.75% for grades X52, but X70; and up to a maximum of 2.00% for X70.,
c. Unless otherwise agreed NB + V ≤ 0.06%,
d. Nb + V + TI ≤ 0.15%,
e. Unless otherwise agreed.,
f. Unless otherwise agreed, NB + V = Ti ≤ 0.15%,
g. No deliberate addition of B is permitted and the residual B ≤ 0.001%

Chemical Composition for PSL 2 pipe with t ≤ 0.984”

Steel Grade	Mass fraction, % based on heat and Steel Products analyses													Carbon Equiv a
	C	Si		Mn		P		S		V	Nb	Ti	Other	CE IIW	CE Pcm
	max b	max		max b		max		max		max	max	max		max	max
Seamless and Welded Pipe
BR	0.24	0.4		1.2		0.025		0.015		c	c	0.04	e,l	0.043	0.25
X42R	0.24	0.4		1.2		0.025		0.015		0.06	0.05	0.04	e,l	0.043	0.25
BN	0.24	0.4		1.2		0.025		0.015		c	c	0.04	e,l	0.043	0.25
X42N	0.24	0.4		1.2		0.025		0.015		0.06	0.05	0.04	e,l	0.043	0.25
X46N	0.24	0.4		1.4		0.025		0.015		0.07	0.05	0.04	d,e,l	0.043	0.25
X52N	0.24	0.45		1.4		0.025		0.015		0.1	0.05	0.04	d,e,l	0.043	0.25
X56N	0.24	0.45		1.4		0.025		0.015		0.10f	0.05	0.04	d,e,l	0.043	0.25
X60N	0.24f	0.45f		1.40f		0.025		0.015		0.10f	0.05f	0.04f	g,h,l	As agree
BQ	0.18	0.45		1.4		0.025		0.015		0.05	0.05	0.04	e,l	0.043	0.25
X42Q	0.18	0.45		1.4		0.025		0.015		0.05	0.05	0.04	e,l	0.043	0.25
X46Q	0.18	0.45		1.4		0.025		0.015		0.05	0.05	0.04	e,l	0.043	0.25
X52Q	0.18	0.45		1.5		0.025		0.015		0.05	0.05	0.04	e,l	0.043	0.25
X56Q	0.18	0.45f		1.5		0.025		0.015		0.07	0.05	0.04	e,l	0.043	0.25
X60Q	0.18f	0.45f		1.70f		0.025		0.015		g	g	g	h,l	0.043	0.25
X65Q	0.18f	0.45f		1.70f		0.025		0.015		g	g	g	h,l	0.043	0.25
X70Q	0.18f	0.45f		1.80f		0.025		0.015		g	g	g	h,l	0.043	0.25
X80Q	0.18f	0.45f		1.90f		0.025		0.015		g	g	g	i,j	As agree
X90Q	0.16f	0.45f		1.9		0.02		0.01		g	g	g	j,k	As agree
X100Q	0.16f	0.45f		1.9		0.02		0.01		g	g	g	j,k	As agree
Welded Pipe
BM		0.22	0.45		1.2		0.025		0.015	0.05	0.05	0.04	e,l	0.043	0.25
X42M		0.22	0.45		1.3		0.025		0.015	0.05	0.05	0.04	e,l	0.043	0.25
X46M		0.22	0.45		1.3		0.025		0.015	0.05	0.05	0.04	e,l	0.043	0.25
X52M		0.22	0.45		1.4		0.025		0.015				e,l	0.043	0.25
X56M		0.22	0.45f		1.4		0.025		0.015				e,l	0.043	0.25
X60M		0.12f	0.45f		1.60f		0.025		0.015	g	g	g	h,l	0.043	0.25
X65M		0.12f	0.45f		1.60f		0.025		0.015	g	g	g	h,l	0.043	0.25
X70M		0.12f	0.45f		1.70f		0.025		0.015	g	g	g	h,l	0.043	0.25
X80M		0.12f	0.45f		1.85f		0.025		0.015	g	g	g	i,j	.043f	0.25
X90M		0.1	0.55f		2.10f		0.02		0.01	g	g	g	i,j	鈥?/td>	0.25
X100M		0.1	0.55f		2.10f		0.02		0.01	g	g	g	i,j	鈥?/td>	0.25
a. SMLS t 0.787”, CE limits shall be as agreed. The CEIIW limits applied fi C 0.12% and the CEPcm limits apply if C ≤ 0.12%, b. for each reduction of 0.01% below the specified max. concentration for carbon, and increase of 0.05% above the specified max. concentration for Mn is permissible, up to a max. of 1.65% for grades ≥ B, but ≤ = X52; up to a max. of 1.75% for grades X52, but X70; and up to a maximum of 2.00% for X70., c. Unless otherwise agreed Nb = V ≤ 0.06%, d. Nb = V = Ti ≤ 0.15%, e. Unless otherwise agreed, Cu ≤ 0.50%; Ni ≤ 0.30% Cr ≤ 0.30% and Mo ≤ 0.15%, f. Unless otherwise agreed, g. Unless otherwise agreed, Nb + V + Ti ≤ 0.15%, h. Unless otherwise agreed, Cu ≤ 0.50% Ni ≤ 0.50% Cr ≤ 0.50% and MO ≤ 0.50%, i. Unless otherwise agreed, Cu ≤ 0.50% Ni ≤ 1.00% Cr ≤ 0.50% and MO ≤ 0.50%, j. B ≤ 0.004%, k. Unless otherwise agreed, Cu ≤ 0.50% Ni ≤ 1.00% Cr ≤ 0.55% and MO ≤ 0.80%, l. for all PSL 2 pipe grades except those grades with footnotes j noted, the following applies. Unless otherwise agreed no intentional addition of B is permitted and residual B ≤ 0.001% .

API 5L MECHANICAL PROPERTIES：

Pipe Grade	Tensile Properties – Pipe Body of SMLS and Welded Pipes PSL 1			Seam of Welded Pipe
	Yield Strength a	Tensile Strength a	Elongation	Tensile Strength b
	Rt0,5 PSI Min	Rm PSI Min	(in 2in Af % min)	Rm PSI Min
A	30,500	48,600	c	48,600
B	35,500	60,200	c	60,200
X42	42,100	60,200	c	60,200
X46	46,400	63,100	c	63,100
X52	52,200	66,700	c	66,700
X56	56,600	71,100	c	71,100
X60	60,200	75,400	c	75,400
X65	65,300	77,500	c	77,500
X70	70,300	82,700	c	82,700
a. for intermediate grade, the difference between the specified minimum tensile strength and the specified minimum yield for the pipe body shall be as given for the next High Temperature grade.
b. for the intermediate grades, the specified minimum tensile strength for the weld seam shall be the same as determined for the body using foot note a.
c. The specified minimum elongation, Af, expressed in percent and rounded to the nearest percent, shall be determined using the following equation:
Where C is 1 940 for calculation using Si units and 625 000 for calculation using USC units
Axc is the applicable tensile test piece cross-sectional area, expressed in square millimeters (square inches) , as follows
– for circular cross-section test pieces, 130mm2 (0.20 in2) for 12.7 mm (0.500 in) and 8.9 mm (.350 in) diameter test pieces; and 65 mm2 (0.10 in2) for 6.4 mm (0.250in) diameter test pieces.
– for full-section test pieces, the lesser of a) 485 mm2 (0.75 in2) and b) the cross-sectional area of the test piece, derived using the specified outside diameter and the specified wall thickness of the pipe, rounded to the nearest 10 mm2 (0.10in2)
– for strip test pieces, the lesser of a) 485 mm2 (0.75 in2) and b) the cross-sectional area of the test piece, derived using the specified width of the test piece and the specified wall thickness of the pipe, rounded to the nearest 10 mm2 (0.10in2)
U is the specified minimum tensile strength, expressed in megapascals (pounds per square inch)

Pipe Grade	Tensile Properties – Pipe Body of SMLS and Welded Pipes PSL 2						Seam of Welded Pipe
	Yield Strength a		Tensile Strength a		Ratio a,c	Elongation	Tensile Strength
	Rt0,5 PSI Min		Rm PSI Min		R10,5IRm	(in 2in)	Rm (psi)
						Af %
	Minimum	Maximum	Minimum	Maximum	Maximum	Minimum	Minimum
BR, BN,BQ,BM	35,500	65,300	60,200	95,000	0.93	f	60,200
X42,X42R,X2Q,X42M	42,100	71,800	60,200	95,000	0.93	f	60,200
X46N,X46Q,X46M	46,400	76,100	63,100	95,000	0.93	f	63,100
X52N,X52Q,X52M	52,200	76,900	66,700	110,200	0.93	f	66,700
X56N,X56Q,X56M	56,600	79,000	71,100	110,200	0.93	f	71,100
X60N,X60Q,S60M	60,200	81,900	75,400	110,200	0.93	f	75,400
X65Q,X65M	65,300	87,000	77,600	110,200	0.93	f	76,600
X70Q,X65M	70,300	92,100	82,700	110,200	0.93	f	82,700
X80Q,X80M	80,.500	102,300	90,600	119,700	0.93	f	90,600
a. for intermediate grade, refer to the full API5L specification.
b. for grades X90 refer to the full API5L specification.
c. This limit applies for pies with D 12.750 in
d. for intermediate grades, the specified minimum tensile strength for the weld seam shall be the same value as was determined for the pipe body using foot a.
e. for pipe requiring longitudinal testing, the maximum yield strength shall be ≤ 71,800 psi
f. The specified minimum elongation, Af, expressed in percent and rounded to the nearest percent, shall be determined using the following equation:
Where C is 1 940 for calculation using Si units and 625 000 for calculation using USC units
Axc is the applicable tensile test piece cross-sectional area, expressed in square millimeters (square inches) , as follows
– for circular cross-section test pieces, 130mm2 (0.20 in2) for 12.7 mm (0.500 in) and 8.9 mm (.350 in) diameter test pieces; and 65 mm2 (0.10 in2) for 6.4 mm (0.250in) diameter test pieces.
– For full-section test pieces, the lesser of a) 485 mm2 (0.75 in2) and b) the cross-sectional area of the test piece, derived using the specified outside diameter and the specified wall thickness of the pipe, rounded to the nearest 10 mm2 (0.10in2)
– For strip test pieces, the lesser of a) 485 mm2 (0.75 in2) and b) the cross-sectional area of the test piece, derived using the specified width of the test piece and the specified wall thickness of the pipe, rounded to the nearest 10 mm2 (0.10in2)
U is the specified minimum tensile strength, expressed in megapascals (pounds per square inch
g. Lower values fo R10,5IRm may be specified by agreement
h. for grades x90 refer to the full API5L specification.

Delivery condition：

PSL	Delivery Condition	Pipe grade
PSL1	As-rolled, normalized, normalizing formed	A
	As-rolled, normalizing rolled, thermomechanical rolled, thermo-mechanical formed, normalizing formed, normalized, normalized and tempered or if agreed Q&T SMLS only	B
	As-rolled, normalizing rolled, thermomechanical rolled, thermo-mechanical formed, normalizing formed, normalized, normalized and tempered	X42, X46, X52, X56, X60, X65, X70
PSL 2	As-rolled	BR, X42R
	Normalizing rolled, normalizing formed, normalized or normalized and tempered	BN, X42N, X46N, X52N, X56N, X60N
	Quenched and tempered	BQ, X42Q, X46Q, X56Q, X60Q, X65Q, X70Q, X80Q, X90Q, X100Q
	Thermomechanical rolled or thermomechanical formed	BM, X42M, X46M, X56M, X60M, X65M, X70M, X80M
	Thermomechanical rolled	X90M, X100M, X120M
	The suffice (R, N, Q or M) for PSL2 grades, belongs to the steel grade

Applications

The API 5L Grade X52 Steel Pipe is extensively used in:

Oil and gas transmission pipelines
Natural gas distribution networks
Water transportation systems
Petrochemical processing plants
Pipeline infrastructure projects

China National Petroleum Corporation Projects

This pipe grade has been specifically designed to meet the rigorous standards of China National Petroleum Corporation's pipeline projects, ensuring:

Compliance with national safety regulations
Optimal performance in diverse climatic conditions
Reliable operation over extended periods

Quality Assurance

All API 5L Grade X52 Steel Pipes undergo rigorous quality control measures:

Chemical composition analysis
Mechanical property testing
Non-destructive examination
Hydrostatic pressure testing
Dimensional inspection

These comprehensive tests ensure that every pipe meets or exceeds API 5L specifications and project requirements.

Why Choose Our API 5L X52 Pipes?

Strict compliance with international standards
Customizable specifications to meet project needs
Competitive pricing without compromising quality
Timely delivery to keep projects on schedule
Technical support from industry experts

For more information about our API 5L Grade X52 Steel Pipe or to discuss your specific requirements, please contact our sales team.

Packaging and shipment

Company Profile

Guangqing Ganglian Metal Manufacturing Co., Ltd. is a professional steel Supplier. We are committed to providing global users with a wide variety of high-quality one-stop supply chain solutions. The predecessor of the company has been deeply engaged in the domestic market for over a decade. In 2021, the export department was established. Relying on its strong resource integration capabilities and service network, its products have been exported to Vietnam, the Philippines, Thailand, Myanmar, Indonesia, Turkey, Poland, Italy, Spain, Saudi Arabia, the United Arab Emirates, Bahrain, Iran, Russia, Brazil, Kenya, and South Africa. More than 80 countries and regions.

With a professional team, high-quality resources, efficient processes and considerate services, we guarantee your delivery timeliness, create greater value for our customers and help you gain the upper hand in the global market.

Enterprise certification

The product range covers various types such as Steel plates, coils, tubes, profiles, etc. The materials include carbon steel, stainless steel, galvanized, color-coated, alloys, copper and aluminum, etc. The enterprise has passed international certifications such as ISO9001 and 13485. Its products comply with different standards including JIS,DIN,ASTM,EN,AISI, GOST etc, and have successfully passed CE certification. The company actively cooperates with third-party certification companies such as TUV,BV, and SGS to provide customers with authoritative and reliable third-party test reports.

ISO9001
ISO14001
ISO45001
CE

Exhibition-related

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