Line Pipes API 5L

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Loading Port:: China Main Port

Payment Terms:: TT or L/C

Min Order Qty:: 50MT m.t.

Supply Capability:: based on order m.t./month

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Application:

It is widely applied to line pipe and casing and tubing in oil transportation and casing field, and it is used in Low,high pressure liquid and gassy transportation and it is also good Structure pipe (for furniture, window, door, building , bridge, mechanical etc).

Package: bundles with anti-rust painting and with plastic caps

Standard:

API SPEC 5L, API SPEC 5CT, ASTM A53, GB/T9711.1

Steel Grade:

API SPEC 5L: B, X42, X46, X52, X56, X60, X65

API SPEC 5CT: J55, K55, N80, L80-1

ASTM A53: A, B, C

GB/T9711.1:L242、L290、L320、L360、L390、L415、L450

Standard: GB/9711. Mechanical Properties

Standard	Grade	（MPa）	（MPa）	Min(%)
Standard	Grade	Yield strength	Tensile Strength	Elongation
GB/T9711.1	L245	≥245	≥415	21
	L290	≥290	≥415	21
	L320	≥320	≥435	20
	L360	≥360	≥460	19
	L390	≥390	≥490	18
	L415	≥415	≥520	17
	L450	≥450	≥535	17
	L485	≥485	≥570	17

Chemical Composition(%)

Standard	Grade	C	Mn	P	S
Standard	Grade	Max	Max	Max	Max
GB/T9711.1	L245	0.26	0.15	0.030	0.030
	L290	0.28	1.25	0.030	0.030
	L320, L360	0.30	1.25	0.030	0.030
	L390, L415	0.26	1.35	0.030	0.030
	L450	0.26	1.40	0.030	0.030
	L485	0.23	1.60	0.025	0.030

Standard: GB/9711.2 Mechanical Properties

Standard	Grade	（MPa） Yield strength		（MPa） Tensile Strength		Min(%) Elongation

GB/T9711.2		Rt0.5Min	Rt0.5Max	RmMin	Rt0.5/Rm Max
	L245	245	440		0.80	22
	L245				0.85
	L290	290	440		0.80	21
	L290				0.85
	L360	360	510		0.85	20
	L360				0.85
	L415	415	565		0.85	18
	L415				0.85
	L450	450	570	535	0.87	18
	L485	485	605	570	0.90	18

Chemical Composition (%)

Standard	Grade	C	Mn	P	S	V	Nb	Ti	CEV
Standard	Grade	Max	Max	Max	Max	Max	Max	Max	Max
GB/T9711.2	L245NB	0.16	1.1	0.025	0.020	-	-	-	0.42
	L290NB	0.17	1.2	0.025	0.020	0.05	0.05	0.04	0.42
	L360NB	0.20	1.6	0.025	0.020	0.10	0.05	0.04	0.45
	L415NB	0.21	1.6	0.025	0.020	0.15	0.05	0.04	-
	L245NB, L290NB	0.16	1.5	0.025	0.020	0.04	0.04	-	0.4
	L360NB	0.16	1.6	0.025	0.020	0.05	0.05	0.04	0.41
	L415NB	0.16	1.6	0.025	0.020	0.08	0.05	0.06	0.42
	L450NB	0.16	1.6	0.025	0.020	0.10	0.05	0.06	0.43
	L485NB	0.16	1.7	0.025	0.020	0.10	0.06	0.06	0.43

Standard: ASTM A53 Mechanical Properties

Standard	Grade	（MPa）	（MPa）
Standard	Grade	Yield strength	Tensile Strength
ASTM A53M	A	205	330
ASTM A53M	B	240	415

Chemical Composition(%)

Standard	Grade	C	Mn	P	S	V	Ni	Cu	Cr	Mo
Standard	Grade	Max	Max	Max	Max	Max	Max	Max	Max	Max
ASTM A53M	A	0.25	0.95	0.05	0.045	0.08	0.4	0.5	0.4	0.15
ASTM A53M	B	0.30	1.20	0.05	0.045	0.08	0.4	0.5	0.4	0.15

Raw Materials Line Pipes API 5L

Production Line of Line Pipes API 5L

Q: Can steel pipes be used for underground oil pipelines?: Yes, steel pipes can be used for underground oil pipelines. Steel pipes are commonly used in the construction of underground oil pipelines due to their strength, durability, and resistance to corrosion. They are able to withstand the high pressure and weight of the oil being transported, as well as any external forces such as soil movement or seismic activity. Additionally, steel pipes can be coated or lined with materials such as epoxy or polyethylene to further protect against corrosion and increase their lifespan. Overall, steel pipes are a reliable and widely used choice for underground oil pipelines.

Q: What are the safety regulations for working with steel pipes?: The safety regulations for working with steel pipes may vary depending on the specific circumstances and location, but some common safety measures include wearing appropriate personal protective equipment (PPE) such as gloves, safety glasses, and steel-toed boots, ensuring proper handling techniques to prevent injuries, using proper lifting equipment to prevent strain or back injuries, implementing proper ventilation and respiratory protection when working in confined or poorly ventilated spaces, and following proper procedures for welding, cutting, or bending steel pipes to minimize the risk of fire or explosions. It is essential to consult and adhere to local safety regulations and guidelines to ensure a safe working environment when dealing with steel pipes.

Q: What is the maximum diameter of steel pipes?: The maximum diameter of steel pipes can vary depending on the specific manufacturing capabilities, but generally, it can range from a few inches to several feet.

Q: How do steel pipes handle high-pressure applications?: Steel pipes are able to handle high-pressure applications due to their inherent strength and durability. They have a high tensile strength and are resistant to deformation under extreme pressure. Additionally, the seamless construction of steel pipes ensures that there are no weak points or joints that can compromise their ability to handle high pressures.

Q: How are steel pipes coated for insulation purposes?: Various methods and materials are commonly used to coat steel pipes for insulation. One method involves applying a thermal insulation coating, typically made of a high-performance polymer or epoxy-based material, to the surface of the pipe. To ensure proper adhesion of the coating, the steel pipe is first thoroughly cleaned to remove dirt, grease, and rust. This cleaning process, known as abrasive blasting, involves propelling small particles at high speed to remove contaminants and create a clean, rough surface. Once the surface is prepared, the thermal insulation coating is applied using techniques such as spraying, brushing, or rolling. Multiple layers of the coating are carefully applied to ensure adequate coverage and thickness. This forms a protective barrier between the steel pipe and the external environment, preventing heat transfer and reducing energy loss. In addition to thermal insulation coatings, steel pipes can also be coated with materials like polyurethane foam or mineral wool. These materials offer excellent thermal insulation properties and are often used in applications where high-temperature resistance is necessary. Overall, the insulation of steel pipes involves a combination of surface preparation and the application of specialized coatings. These coatings serve to minimize heat loss, improve energy efficiency, and protect against corrosion and other environmental factors.

Q: What are the different end finishes for steel pipes?: The different end finishes for steel pipes include plain ends, beveled ends, threaded ends, and grooved ends.

Q: Can steel pipes be used for electrical conduit systems?: No, steel pipes cannot be used for electrical conduit systems as they are conductive and can pose a safety risk. Non-metallic conduits, such as PVC or fiberglass, are commonly used for electrical wiring to ensure insulation and protect against electrical hazards.

Q: Can steel pipes be recycled after their useful life?: Yes, steel pipes can be recycled after their useful life. Steel is a highly recyclable material, and this includes steel pipes. Recycling steel pipes involves collecting the used pipes, cleaning them to remove any contaminants, and then processing them into new steel products. The recycling process helps to conserve natural resources, reduce energy consumption, and minimize waste. Additionally, recycling steel pipes helps to reduce the environmental impact associated with the production of new steel.

Q: Do steel pipes require maintenance?: Yes, steel pipes do require maintenance. Regular maintenance is necessary to ensure their proper functioning and longevity. This may involve cleaning, inspecting for any signs of corrosion or damage, and applying protective coatings to prevent rusting. Additionally, periodic maintenance checks and repairs may be needed to address any leaks or structural issues that may arise over time.

Q: How are steel pipes made?: Steel pipes are made through a process called pipe manufacturing, which involves multiple steps. Firstly, raw steel is melted in a furnace and then subjected to continuous casting to form a solid billet. This billet is then heated and pierced to create a hollow tube called a shell. Next, the shell is rolled and stretched to the desired diameter and thickness using a series of rollers. The pipe is then subjected to a process called welding, where two edges of the shell are fused together to create a seamless or welded pipe. Finally, the pipe undergoes various finishing processes such as cutting, straightening, and inspection before being ready for use.

All these steel pipes are suitable for the industries of oil, natural gas,ship building,chemical, environmental protection,boiler, water conservancy, electrical industry,steel structure, building and other related fields.Our company following the principle that ‘customer supemacy, business integrity’We will do our best to supply best products and service to our customers. We expect mutual benefit.

1. Manufacturer Overview

Location	Tianjin, China
Year Established	2004
Annual Output Value	250,000Tons
Main Markets	Europe; South America; Americas;etc.
Company Certifications	API 5L；API 5CT；ISO 9001:2008 GB/T 19001-2008;ISO 9001:2008

2. Manufacturer Certificates

a) Certification Name
Range
Reference
Validity Period

3. Manufacturer Capability

a) Trade Capacity
Nearest Port	Tianjin
Export Percentage	50% - 60%
No.of Employees in Trade Department	1000-2000 People
Language Spoken:	English; Chinese; Spanish
b) Factory Information
Factory Size:	Above 70,000 square meters
No. of Production Lines	Above 8
Contract Manufacturing	OEM Service Offered; Design Service Offered
Product Price Range	Average