API ERW Line Pipes

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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 of API ERW Line Pipes :

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 of API ERW Line Pipes:

bundles with anti-rust painting and with plastic caps

Standard of API ERW Line Pipes:

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

Steel Grade of API ERW Line Pipes:

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

Sizes of pipes of API ERW Line Pipes:

*Remark: Besides below sizes, we also can arrange production based on requirement of customers

OD		WT			WEIGHT
INCH	MM	SCH	MM	INCH	KG/M	LB/INCH
1 1/2”	48.3	STD-40	3.68	0.145	4.09	2.75
1 1/2”	48.3	XS-80	5.08	0.2	5.47	3.68
2”	60.3	STD-40	3.91	0.154	5.49	3.69
2”	60.3	XS-80	5.54	0.218	7.56	5.08
2 1/2”	73	STD-40	5.16	0.203	8.72	5.86
2 1/2”	73	XS-80	7.01	0.276	11.52	7.74
3”	88.9	STD-40	5.49	0.216	11.41	7.67
3”	88.9	XS-80	7.62	0.3	15.43	10.37
3 1/2”	101.6	STD-40	5.74	0.226	13.71	9.21
3 1/2”	101.6	XS-80	8.08	0.318	18.83	12.65
4”	114.3	STD-40	6.02	0.237	16.24	10.91
4”	114.3	XS-80	8.56	0.337	22.55	15.15
5”	141.3	STD-40	6.55	0.258	21.99	14.78
5”	141.3	XS-80	9.53	0.375	31.28	21.02
6”	168.3	STD-40	7.11	0.28	28.55	19.19
6”	168.3	XS-80	10.97	0.432	42.99	28.89
8”	219.1	STD-40	8.18	0.322	42.98	28.88
8”	219.1	XS-80	12.7	0.5	65.3	43.88
10”	273	STD-40	9.27	0.365	60.9	40.92
10”	273	80	15.09	0.594	96.95	65.15
12”	323.8	STD	9.53	0.375	74.61	50.13
12”	323.8	40	10.31	0.406	80.51	54.1
12”	323.8	XS	12.7	0.5	98.42	66.14
12”	323.8	80	17.48	0.688	133.38	89.63
14”	355.6	40	11.13	0.438	95.51	64.18
14”	355.6	XS	12.7	0.5	108.48	72.9
14”	355.6	80	19.05	0.75	159.71	107.32
16”	406.4	XS-40	12.7	0.5	124.55	83.69
18”	457	STD	9.53	0.375	106.23	71.38
18”	457	40	14.27	0.562	157.38	105.75
18”	457	80	23.83	0.938	257.13	172.78
20”	508	40	15.09	0.594	185.28	124.5
20”	508	80	26.19	1.031	314.33	211.22

Machinical 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 of ERW Pipes

API ERW Line Pipes Raw Materials

Unfold Machine

API ERW Line Pipes unfold

Production Line

ERW Steel Pipe Production Line

ERW UT Offline Weld Flaw Detection Machine

API ERW Line Pipes

Q:What are the different methods of joining steel pipes?: There are several different methods of joining steel pipes, including welding, threading, flanging, grooving, and using mechanical connectors.

Q:How are steel pipes used in the construction of hydroelectric power plants?: Steel pipes are used in the construction of hydroelectric power plants for various purposes, such as transporting water, containing and directing the flow of water, and supporting the weight of turbines and other equipment. They are typically used for penstocks, which are large pipes that carry water from the dam to the turbines, and for discharge pipes that release water back into the river. The strength and durability of steel pipes make them ideal for withstanding the high pressure and heavy loads involved in hydroelectric power generation.

Q:Can steel pipes be threaded?: Yes, steel pipes can be threaded. Threading is a common process used to create a screw-like pattern on the outer surface of the pipe, allowing it to be connected to other fittings or components. Threading can be done manually or with the help of machinery, depending on the size and requirements of the pipe.

Q:Are steel pipes suitable for high-pressure applications?: Yes, steel pipes are highly suitable for high-pressure applications. Steel is known for its strength and durability, making it an ideal material for carrying fluids or gases under high pressure. Steel pipes have the ability to withstand extreme conditions and maintain their structural integrity, making them a reliable choice for various industries such as oil and gas, chemical processing, and power generation.

Q:How are steel pipes used in the manufacturing of bridges?: Steel pipes are commonly used in the manufacturing of bridges for various purposes, such as supporting heavy loads, providing structural strength, and ensuring durability. They are often used as piling foundations, allowing the bridge to be securely anchored to the ground. Steel pipes can also be used as bridge components, such as support columns, beams, and trusses, providing the necessary strength and stability to withstand the weight and forces exerted on the bridge. Additionally, steel pipes are used for drainage systems, allowing water to flow away from the bridge structure, preventing potential damage or erosion. Overall, steel pipes play a crucial role in the construction and structural integrity of bridges.

Q:Can steel pipes be used for underground telecommunications networks?: Yes, steel pipes can be used for underground telecommunications networks. Steel pipes are commonly used for their durability, strength, and resistance to corrosion, making them suitable for protecting and housing telecommunication cables underground. They provide reliable protection against external elements and mechanical damage, ensuring the smooth operation of underground telecommunications networks.

Q:DN80 seamless steel tube, what is the standard thickness?: Generally speaking, the diameter of the pipe can be divided into outer diameter, inner diameter and nominal diameter. Tubes are made of seamless steel tubes. The outer diameter of the tubes is indicated by the letter D, followed by additional outer diameter dimensions and wall thicknesses such as seamless steel tubes with an outer diameter of 108.

Q:25 of the steel pipe with 6 in charge of what is the difference?: 25 of the steel pipe with 6 in charge of the difference:25 of the steel pipe refers to the DN25 tube, the outer diameter of 25mm; 6, in charge of refers to DN20 steel pipe, the outer diameter is 20mm.

Q:What is a valve and how is it used in steel pipes?: A valve is a device that controls the flow of fluid or gas by opening, closing, or partially obstructing passageways within a pipeline system. In the context of steel pipes, valves are used to regulate the flow of liquid or gas through the pipe network, allowing for control over the volume, pressure, and direction of the fluid. This ensures efficient and safe operation of the steel pipes by preventing excessive flow, leakage, or backflow. Additionally, valves in steel pipes enable the isolation and maintenance of specific sections of the pipeline without interrupting the entire system.

Q:Are steel pipes resistant to corrosion?: Yes, steel pipes are generally resistant to corrosion due to the protective layer of oxide that forms on their surface, but their resistance can vary depending on the specific grade of steel and the environment they are exposed to.

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