Wholesale API 5L Grade B Carbon Seamless Pipe Steel Line Pipe for Oil & Gas Pipelines Manufacturer and Supplier

API 5L Grade B Carbon Seamless Pipe Steel Line Pipe for Oil & Gas Pipelines

Short Description:

High-quality, factory-direct API 5L Grade B carbon seamless line pipes for energy, water, and industrial pipeline projects. PSL1 & PSL2 options available.

Usage: API 5L Carbon Seamless Pipe

Surface: Black

Grades: API 5L Grade B, X42, X52, X56, X60, X65, X70, X80

Outer Diameter Range: 1/2” to 2”, 3”, 4”, 6”, 8”, 10”, 12”, 16 inches, 18 inches, 20 inches, 24 inches up to 40 inches

Delivery Time: 15-30 days (according to the actual tonnage)

FOB Port: Tianjin Port/Shanghai Port

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Product Detail

Product Tags

Product Detail

Feature	Specification / Details
Standard	API 5L, PSL1 / PSL2
Grade	B
Type	Seamless Carbon Steel Pipe
Outer Diameter (OD)	1/2” – 40”
Wall Thickness	SCH 10, SCH 20, SCH 40, SCH STD, SCH 80, SCH XS, SCH 160
Length	20FT / 40FT, SRL / DRL, or customizable
End Type	Beveled ends, Plain ends
Surface Treatment	Natural, Black Painted, FBE, 3PE/3LPE, 3PP, CWC, CRA Clad or Lined
Certification	Full API 5L certificates, Mill Test Report included
Ready Stock	Large inventory for fast delivery

API 5L Pipe is the specification for the oil and gas line pipe that applies to the carbon steel pipe for transportation of oil and natural gas. It is the most/one of the most suitable material for steam, water and mud transportation etc.,.

Manufacturing Types

API 5L Pipe Fabrication Types
The API 5L standard covers both seamless and welded steel pipes.

Welded Pipe Types:

ERW (Electric Resistance Welding): Suitable for pipe diameters under 24 inches, commonly used for standard line pipe applications.

DSAW / SAW (Double Submerged Arc Welding / Submerged Arc Welding): Alternative to ERW for larger diameter pipes, ensuring strong longitudinal welds.

LSAW (Longitudinal Submerged Arc Welding): Used for diameters up to 48 inches, also known as the JCOE fabrication process, ideal for high-pressure pipelines.

SSAW / HSAW (Spiral Submerged Arc Welding / Helical Submerged Arc Welding): Suitable for diameters up to 100 inches, widely used in large-diameter water, oil, and gas pipelines.

All welded pipes are manufactured according to API 5L standards, ensuring consistent strength, reliability, and performance for industrial and energy projects.

Contact Us to Learn the Differences Between ERW, LSAW, and SSAW pipe.

Types of Seamless Pipe : Hot rolled seamless pipe Cold rolled

seamless steel pipe is generally employed for small diameter pipes (usually less than 24 inches).
(Seamless steel pipe is preferred over welded pipe for diameters less than 150 mm (6 in)).
We do large diameter seamless pipe also. By employing a hot-rolled process, seamless pipe with a maximum diameter of 20 inches (508 mm) can be manufactured. If you need to seamless pipe with diameter > 20" , we can manufacture the seamless pipe by hot-expanded process with diameter up to 40" (1016 mm).

API 5L Pipe Grade

API 5L includes grades such as Grade B, X42, X46, X52, X56, X60, X65, X70 and X80.

API 5L Steel Pipe is available in several steel grades including Grade B, X42, X46, X52, X56, X60, X65, X70 and X80. The higher the grade of the steel, the tighter the carbon equivalent control and the higher the mechanical strength properties are.

Moreover, the chemical makeup of welded and seamless API 5L pipes with the same steel grade has a difference, in which the welded pipes have higher demands and less content of carbon and sulfur.

Chemical requirements

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	0.03	0.03	–	–	–
B	0.28	1.2	0.03	0.03	c,d	c,d	d
X42	0.28	1.3	0.03	0.03	d	d	d
X46	0.28	1.4	0.03	0.03	d	d	d
X52	0.28	1.4	0.03	0.03	d	d	d
X56	0.28	1.4	0.03	0.03	d	d	d
X60	0.28 e	1.40 e	0.03	0.03	f	f	f
X65	0.28 e	1.40 e	0.03	0.03	f	f	f
X70	0.28 e	1.40 e	0.03	0.03	f	f	f
Welded Pipe
A	0.22	0.9	0.03	0.03	–	–	–
B	0.26	1.2	0.03	0.03	c,d	c,d	d
X42	0.26	1.3	0.03	0.03	d	d	d
X46	0.26	1.4	0.03	0.03	d	d	d
X52	0.26	1.4	0.03	0.03	d	d	d
X56	0.26	1.4	0.03	0.03	d	d	d
X60	0.26 e	1.40 e	0.03	0.03	f	f	f
X65	0.26 e	1.45 e	0.03	0.03	f	f	f
X70	0.26e	1.65 e	0.03	0.03	f	f	f
a. Cu ≤ = 0.50% Ni; ≤ 0.50%; Cr ≤ 0.50%; and Mo ≤ 0.15%,
b. For the API 5L steel, if the content of carbon is 0.01% less than the upper limit, manganese content may be increased for 0.05%, with a maximum level for each grade as follows: 1.65% for L<1.65% for grades ≥ L245/B but ≤ L360/X52; 1.75% for grades > L360/X52 but < L485/X70; and 2.00% for grade L485/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 requirements

Chemical Composition for PSL 2 pipe with t ≤ 0.984”

Steel Grade

Mass fraction, % based on heat and product analyses

Carbon Equiv a

Other

CE IIW

CE Pcm

max b

max

max b

max

Seamless and Welded Pipe
BR	0.24	0.4	1.2	0.025	0.015	c	c	0.04	e,l	0.43	0.25
X42R	0.24	0.4	1.2	0.025	0.015	0.06	0.05	0.04	e,l	0.43	0.25
BN	0.24	0.4	1.2	0.025	0.015	c	c	0.04	e,l	0.43	0.25
X42N	0.24	0.4	1.2	0.025	0.015	0.06	0.05	0.04	e,l	0.43	0.25
X46N	0.24	0.4	1.4	0.025	0.015	0.07	0.05	0.04	d,e,l	0.43	0.25
X52N	0.24	0.45	1.4	0.025	0.015	0.1	0.05	0.04	d,e,l	0.43	0.25
X56N	0.24	0.45	1.4	0.025	0.015	0.10f	0.05	0.04	d,e,l	0.43	0.25
X60N	0.24f	0.45f	1.40f	0.025	0.015	0.10f	0.05f	0.04f	g,h,l	As agreed
BQ	0.18	0.45	1.4	0.025	0.015	0.05	0.05	0.04	e,l	0.43	0.25
X42Q	0.18	0.45	1.4	0.025	0.015	0.05	0.05	0.04	e,l	0.43	0.25
X46Q	0.18	0.45	1.4	0.025	0.015	0.05	0.05	0.04	e,l	0.43	0.25
X52Q	0.18	0.45	1.5	0.025	0.015	0.05	0.05	0.04	e,l	0.43	0.25
X56Q	0.18	0.45f	1.5	0.025	0.015	0.07	0.05	0.04	e,l	0.43	0.25
X60Q	0.18f	0.45f	1.70f	0.025	0.015	g	g	g	h,l	0.43	0.25
X65Q	0.18f	0.45f	1.70f	0.025	0.015	g	g	g	h,l	0.43	0.25
X70Q	0.18f	0.45f	1.80f	0.025	0.015	g	g	g	h,l	0.43	0.25
X80Q	0.18f	0.45f	1.90f	0.025	0.015	g	g	g	i,j	As agreed
X90Q	0.16f	0.45f	1.9	0.02	0.01	g	g	g	j,k	As agreed
X100Q	0.16f	0.45f	1.9	0.02	0.01	g	g	g	j,k	As agreed

Welded Pipe
BM	0.22	0.45	1.2	0.025	0.015	0.05	0.05	0.04	e,l	0.43	0.25
X42M	0.22	0.45	1.3	0.025	0.015	0.05	0.05	0.04	e,l	0.43	0.25
X46M	0.22	0.45	1.3	0.025	0.015	0.05	0.05	0.04	e,l	0.43	0.25
X52M	0.22	0.45	1.4	0.025	0.015	d	d	d	e,l	0.43	0.25
X56M	0.22	0.45f	1.4	0.025	0.015	d	d	d	e,l	0.43	0.25
X60M	0.12f	0.45f	1.60f	0.025	0.015	g	g	g	h,l	0.43	0.25
X65M	0.12f	0.45f	1.60f	0.025	0.015	g	g	g	h,l	0.43	0.25
X70M	0.12f	0.45f	1.70f	0.025	0.015	g	g	g	h,l	0.43	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	–	0.25
X100M	0.1	0.55f	2.10f	0.02	0.01	g	g	g	i,j	–	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 API 5L steel, for every a0.01% decrease in carbon below the maximum allowed, a 0.05% increase in manganese is permitted within the following limits: for grades ≥ L245/B and ≤ L360/X52 up to 1.65%; for grades > L360/X52 and < L485/X70 up to 1.75%; for grades ≥ L485/X70 and ≤ L555/X80 up to 2.00%; and for grades > L555/X80 up to 2.20.
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%.

Delivery Conditions

PSL 1

A Grade: As-rolled, Normalized, Normalizing formed
B Grade: As-rolled, Normalizing rolled, Thermomechanical rolled, Thermo-mechanical formed, Normalizing formed, Normalized, Normalized & tempered, or if agreed, Q&T seamless only
X Grades (X42 – X70): As-rolled, Normalizing rolled, Thermomechanical rolled, Thermo-mechanical formed, Normalizing formed, Normalized, Normalized & tempered

PSL 2

BR / X42R: As-rolled
BN / X42N – X60N: Normalizing rolled, Normalizing formed, Normalized, or Normalized & tempered
BQ / X42Q – X100Q: Quenched and tempered
BM / X42M – X80M: Thermomechanical rolled or Thermomechanical formed
X90M – X120M: Thermomechanical rolled

Note: The suffix R, N, Q, or M in PSL2 grades indicates the specific steel treatment method.

Specification Level : PSL1 , PSL2

PSL is short for Product Specification Level and consists of PSL1 and PSL2. It is something like a quality level.

PSL1 and PSL2 vary not only in the testing, but also the chemical composition and the mechanical properties.

PSL2 is more stringent than PSL1 regarding chemical composition, tensile properties, impact test, non-destructive testing, and so on.
Impact Testing

Impact testing - Not required for PSL1, but is for PSL2 (except X80).
Non-destructive Testing

PSL1 does not require non-destructive testing but PSL2 does.

(NDT (Non Destructive Testing): In accordance with the API 5L, to identify the defects and imperfections within the pipelines using radiographic, ultrasonic or other non-destructive methods which do not cause any damage to the material.)

For more details, contact us to learn more about the differences between API 5L PSL1 and PSL2.

Packing and Transportation

Packaging:

Normally naked pipes are bundled with steel wire, it is strong and convenient.

The rust-proof or customized packing can be optional for special needs or for better appearance.

Precautions:

Transportation, storage and handling NProtect the pipe from impact, extrude and cut damage.

Take all necessary precautions while handling carbon steel pipe to avoid incidents that could result in an explosion, fire, or exposure to toxic gases.

Don’t expose to high temperature, strong corrosive medium and other bad condition. For the above temperature select high temperature pipes and for above corrosive medium select corrosion resistant pipes.

According to the environment, nature of medium, pressure, temperature and other working conditions select suitable pipe material and pipe specifications.

The appropriate inspections and tests are made before use and the pipe meets the quality requirements.

Transportation: Express (Sample Delivery), Air, Rail, Land, Sea shipping (FCL or LCL or Bulk)

Our Customer

FAQ

Q1: What are the specifications & grades for your API 5L pipes?

A: We can offer API 5L PSL1 and PSL2 Grade B, X42, X52, X56, X60, X65, X70, X80 pipe. We provide both seamless and welded product (ERW, SAW, DSAW, LSAW, SSAW, HSAW) with size ranging from 1/2” to 40” and wall thickness from SCH 10–SCH 160.

Q2: Can you make different length and end type?

A: Yes. Pipes are offered in SRL (Single Random Length), DRL (Double Random Length), 20FT, 40FT or customized length. Ends can be bevelled or plain as per project requirements.

Q3: Do you have stock for fast delivery?

A: Yes, we have big stock of standard API 5L pipe for sales with quick delivery, lead time is short.

Q4: Are your pipes certified?

Pipes with full API 5L certificate including MTR can be purchased together. Non-destructive testing (radiography, ultrasonic) is performed to verify quality.

Q5: What packaging do you offer?

A: Standard packaging binding with steel wire. Optional rust-proof or customized packaging is available for international shipments or special project requirements.

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