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: How do you determine the maximum allowable stress for a steel pipe?: To determine the maximum allowable stress for a steel pipe, several factors need to be considered. Firstly, the type of steel used in the pipe is crucial as different types of steel have different mechanical properties and strengths. Secondly, the dimensions and thickness of the pipe play a significant role in determining its maximum allowable stress. Thicker pipes generally have higher allowable stresses compared to thinner ones. Additionally, it is important to consider the operating conditions under which the pipe will be subjected. This includes factors such as the temperature, pressure, and the type of fluid flowing through the pipe. These conditions can greatly affect the maximum allowable stress as high temperatures or corrosive fluids may weaken the steel and reduce its strength. To determine the maximum allowable stress, engineers typically refer to industry standards and codes such as the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code and the American Petroleum Institute (API) standards. These standards provide guidelines and formulas for calculating the maximum allowable stress based on the material properties, dimensions, and operating conditions of the pipe. It is important to note that determining the maximum allowable stress is a critical step in ensuring the structural integrity and safety of the steel pipe. It requires a thorough understanding of the materials, design considerations, and industry standards. Therefore, it is recommended to consult with experienced engineers or professionals who specialize in piping design and analysis to accurately determine the maximum allowable stress for a steel pipe.

Q: How are steel pipes connected together?: Steel pipes are typically connected together through various methods such as welding, threading, and flanging. Welding involves fusing the ends of pipes together using high heat, creating a strong and permanent connection. Threading involves screwing the ends of pipes together using threads, while flanging involves connecting pipes by flaring or bending their ends and securing them with bolts. These methods ensure a secure and reliable connection between steel pipes.

Q: A333gr6 steel pipe and domestic material of the same?: The SA333 standard in ASME (cryogenic seamless and welded nominal steel tubes), so A333-6 is a representation of the United States, followed by many countries.

Q: How are steel pipes used in the pulp and paper industry?: Steel pipes are commonly used in the pulp and paper industry for various applications including transporting water, steam, and chemicals throughout the manufacturing process. They are also used for conveying pulp and paper products, as well as for supporting structures such as boiler systems and storage tanks.

Q: What are the different types of steel pipe reducers?: There are several types of steel pipe reducers, including concentric reducers, eccentric reducers, and reducing tees.

Q: What is a valve and how is it used in steel pipes?: A valve is a device used to control the flow of fluid or gas within a system. In steel pipes, valves are used to regulate and control the flow of liquids or gases by opening, closing, or partially obstructing the passage within the pipe. They are essential for redirecting or stopping the flow, ensuring the safe and efficient operation of the steel pipe system.

Q: What are the different types of steel pipe fittings for plumbing systems?: There are several types of steel pipe fittings commonly used in plumbing systems, including elbows, tees, couplings, unions, caps, and plugs. Each of these fittings serves a specific purpose in connecting and directing the flow of water or other fluids within the plumbing system.

Q: Can steel pipes be used for wastewater treatment plants?: Yes, steel pipes can be used for wastewater treatment plants. Steel pipes are commonly used in wastewater treatment plants due to their durability, strength, and resistance to corrosion. They are able to withstand the harsh conditions and chemicals present in wastewater treatment processes, making them a suitable choice for transporting and distributing wastewater within the plant.

Q: Can steel pipes be used for compressed air systems?: Yes, steel pipes can be used for compressed air systems. Steel pipes are commonly used for their strength and durability, making them suitable for handling the high pressures involved in compressed air systems. However, it is important to ensure that the steel pipes are specifically designed and rated for compressed air applications to ensure safety and prevent any potential leaks or failures.

Q: What is the role of steel pipes in the transportation of petroleum products?: Steel pipes have a crucial function in the transportation of petroleum products, as they are specifically designed to endure the high pressure and extreme temperatures associated with oil and gas transportation. A primary responsibility of steel pipes in this process is to serve as a dependable and secure conduit for transporting petroleum products over long distances. They are utilized to construct pipelines that span hundreds or even thousands of miles, connecting oil fields, refineries, and distribution centers. Steel pipes are the preferred choice for this purpose because of their strength, durability, and resistance to corrosion. The high tensile strength of steel allows these pipes to withstand the immense pressure exerted by petroleum products as they flow through the pipelines. Additionally, steel pipes can endure extreme temperatures, ensuring the safe transportation of hot crude oil or refined petroleum products. Moreover, steel pipes possess a high resistance to corrosion, which is of utmost importance given the corrosive nature of petroleum products. To further enhance their corrosion resistance, the pipes are often coated with protective materials such as epoxy or polyethylene. This coating helps prevent leaks or ruptures that could cause environmental damage or safety hazards. Steel pipes also offer cost-effective and efficient transportation of petroleum products. They have a smooth interior surface, which reduces friction and allows for a more efficient flow of oil or gas. This, in turn, helps minimize energy consumption and maximize the throughput of the pipeline system. In conclusion, the main role of steel pipes in the transportation of petroleum products is to provide a reliable, secure, and efficient means of transporting oil and gas over long distances. They are designed to withstand high pressure, extreme temperatures, and corrosion, ensuring the safe and efficient delivery of petroleum products from production sites to refineries and distribution centers.

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