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:What is the difference between carbon steel and stainless steel pipes?: The main difference between carbon steel and stainless steel pipes lies in their composition and corrosion resistance. Carbon steel pipes are primarily made of iron and carbon, while stainless steel pipes contain iron, carbon, and a minimum of 10.5% chromium. This chromium content in stainless steel provides excellent corrosion resistance, making it more suitable for applications where pipes may come in contact with moisture or corrosive substances. Carbon steel pipes, on the other hand, are more cost-effective and commonly used in applications where corrosion resistance is not a primary requirement.

Q:Which is better, galvanized steel pipe or stainless steel?: Stainless steel is good.Stainless steel (Stainless Steel) is referred to as the stainless steel, the resistance of air, steam, water and other weak corrosive medium or with stainless steel known as stainless steel; while the resistance to chemical corrosion (acid, alkali and salt chemical etching) corrosion of steel called acid resistant steel. Because of the difference in the chemical composition of the two, and make their corrosion resistance is different, ordinary stainless steel is generally not resistant to chemical medium corrosion, and acid resistant steel are generally stainless steel.

Q:Are steel pipes suitable for underground gas distribution?: Yes, steel pipes are suitable for underground gas distribution. They have a high tensile strength, corrosion resistance, and can withstand extreme temperatures, making them an ideal choice for transporting natural gas underground. Additionally, steel pipes are durable and have a long lifespan, making them a reliable option for gas distribution systems.

Q:Can steel pipes be used for underground fire hydrants?: Steel pipes are a suitable choice for underground fire hydrants due to their durability, strength, and corrosion resistance. They are commonly used in underground water supply systems, including fire hydrant installations. Furthermore, steel pipes can withstand high water pressures and offer a reliable and long-lasting solution for fire hydrants. However, it is important to ensure that the steel pipes used for underground fire hydrants are adequately coated or lined to prevent corrosion and maintain their structural integrity over time. Regular maintenance and inspections should also be carried out to detect and resolve any potential problems that may arise.

Q:What steel pipes are buried for outdoor heating pipes? Seamless or welded tube? Are there any rules for specific countries? Can use the seamed tube?: The pipe material of heating pipe network should be designed according to the requirement. When the design is not specified, the following requirements shall be met:1 when the pipe diameter is less than or equal to 40mm, welded steel pipe shall be used.2 when the pipe diameter is 50 ~ 200mm, welded steel pipe or seamless steel pipe shall be used.3 when the pipe diameter is greater than 200mm, spiral welded steel pipe shall be used.

Q:What is the dimensional stability of steel pipes?: The dimensional stability of steel pipes refers to their ability to maintain their shape and size under different conditions and over time. Steel pipes are known for their excellent dimensional stability, as they are highly resistant to deformation, warping, and expansion or contraction caused by temperature variations or external forces. This stability is attributed to the inherent strength and rigidity of steel, making it a reliable choice for various applications where maintaining precise dimensions is crucial.

Q:Can steel pipes be used for solar energy systems?: Yes, steel pipes can be used for solar energy systems. Steel pipes are often used for the construction of solar water heating systems, solar thermal collectors, and solar panel mounting structures. They are durable, cost-effective, and provide the necessary support for various components of a solar energy system.

Q:What are the different types of coatings used for internal lining of steel pipes?: There are several types of coatings commonly used for the internal lining of steel pipes, including epoxy coatings, polyurethane coatings, and cement mortar linings. These coatings are applied to protect the steel pipes from corrosion, improve the flow of fluids, and enhance the longevity and durability of the pipes.

Q:Can steel pipes be used for conveying solid materials?: Yes, steel pipes can be used for conveying solid materials. Steel pipes are known for their high strength and durability, making them suitable for transporting solid materials such as ores, grains, or construction materials. They are commonly used in industries such as mining, agriculture, and construction for this purpose.

Q:Can steel pipes be used for power plant construction?: Yes, steel pipes can be used for power plant construction. Steel pipes are commonly employed in power plants for various applications such as the transportation of fluids, steam, and gases, as well as for structural support. They offer high strength, durability, and resistance to extreme temperatures and pressures, making them suitable for the demanding conditions found in power plants.

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