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 can the immersed pipe pile put steel cage into the steel pipe? Which expert to answer?: Immersed tube cast-in-place pile is one of the many types of pile foundations in civil engineering. The immersed tube cast-in-place pile is also called the cast-in-place pile. It is the use of piling equipment, with reinforced concrete pile boots (valve type steel pipe pile shoe) into the soil, pile hole, and then put into the steel skeleton and concrete pouring, then pull out the casing, using vibration extubation of concrete compaction, forming pile needed. Using hammer sinking pile equipment, sinking pipe and pulling pipe pile is called hammer sinking pipe filling pile. It is called vibro sinking pipe cast-in-place pile by vibrator, vibration sinking pipe and pipe pulling pile. In order to improve the quality and carrying capacity of piles, the construction techniques of single shot, double play and reverse insertion are often used in immersed tube cast-in-place piles. Single game (also called a extubation): extubation, every increase of 0.5 ~ 1.0m, 5 ~ 10s vibration, then extubation in 0.5 ~ 1.0m, this is repeated until all pull out; complex play: two singles were continuously in the same pile hole, or according to the needs of the local retapping. Construction, should ensure that two times before and after the immersed tube axis coincide, and in the concrete before the initial coagulation; inverted plug method: steel pipe lifting 0.5m, and then plug 0.3m, so repeated until the pull out.

Q: How are steel pipes used in the manufacturing of automobiles?: Due to their strength, durability, and versatility, steel pipes find widespread use in the manufacturing of automobiles. Throughout the automobile manufacturing process, various applications make use of steel pipes. One primary application of steel pipes in automobiles lies in constructing the vehicle's chassis and body. Structural components, such as steel pipes, provide the necessary strength and rigidity. With the ability to be bent, shaped, and welded, steel pipes prove to be an ideal choice for automotive purposes. Additionally, steel pipes play a crucial role in the exhaust system of automobiles. Responsible for guiding and redirecting exhaust gases away from the engine, steel pipes form the exhaust manifold. They also contribute to the exhaust pipes and mufflers. Steel's high temperature and corrosion resistance make it suitable for enduring the harsh conditions of the exhaust system. Moreover, steel pipes serve in the cooling system of automobiles. They facilitate the transportation of coolant from the engine to the radiator and back, effectively regulating the engine's temperature. Due to their ability to handle high pressure and temperature, as well as their resistance to corrosion and chemical damage, steel pipes remain the preferred choice for this application. Furthermore, steel pipes find usage in the fuel system of automobiles. They ensure a consistent and reliable supply of fuel by transporting it from the tank to the engine. Steel pipes are selected for this purpose because of their resistance to corrosion and their ability to withstand the high pressure and temperature associated with fuel transportation. In conclusion, steel pipes are indispensable in automobile manufacturing. They contribute significantly to the construction of the chassis and body, the exhaust system, the cooling system, and the fuel system. Thanks to their strength, durability, and versatility, steel pipes are the preferred choice for various automotive applications.

Q: Can steel pipes be used for conveying abrasive materials?: Yes, steel pipes can be used for conveying abrasive materials. Steel pipes are known for their durability and resistance to wear and tear, making them suitable for transporting abrasive substances such as sand, gravel, or chemicals. Additionally, steel pipes can handle high pressure and temperature conditions, further contributing to their suitability for conveying abrasive materials.

Q: Are steel pipes suitable for structural applications?: Indeed, steel pipes prove to be appropriate for structural applications. Renowned for their strength, durability, and versatility, steel pipes emerge as an ideal choice for diverse structural purposes. They can be utilized in constructions, bridges, stadiums, and other edifices to provide essential support and stability. Steel pipes exhibit remarkable tensile strength, enabling them to withstand substantial burdens and resist deformation when subjected to pressure. Moreover, their resistance to corrosion renders them dependable for structural applications, even in severe environments. The utilization of steel pipes in structural applications is further amplified by their cost-effectiveness and ease of installation. In summary, owing to their strength, durability, versatility, and cost-effectiveness, steel pipes remain a favored option within the construction industry.

Q: How many meters per ton of steel tube?: Metric tons are metric units and China adopts metric system, so what we Chinese usually say "ton" means "metric ton", which can be regarded as "metric ton"1 metric tons (tonne/metric ton) = 1000 kg1 tons = 1000 kg1 kg = 1000 grams

Q: How are steel pipes coated to prevent external corrosion?: Steel pipes are coated to prevent external corrosion through a process called external coating. This typically involves applying a layer of protective material, such as epoxy or polyethylene, onto the surface of the steel pipe. The coating acts as a barrier, preventing moisture and other corrosive substances from coming into contact with the steel. This helps to prolong the life of the pipe and maintain its structural integrity.

Q: Galvanized steel pipe, PPR pipe, PE pipe, U-PVC pipe and HDPE double wall corrugated pipe and what is the difference between the characteristics of: U-PVC tubes are hard poly vinyl pipes, because they contain chlorine, so they are mainly used in sewer pipes or electrical wiring;HDPE double wall corrugated pipe is a high-density polyethylene pipe, because of its excellent electrical insulation performance, now mainly used for distribution line arrangement.

Q: How are steel pipes joined together?: Steel pipes are often joined together using different methods such as welding, threading, and couplings. Welding involves melting the pipe ends and fusing them together, creating a strong and seamless joint. Threading involves cutting threads on the pipe ends and using fittings to screw them together. Couplings are used to connect two pipes by sliding them over the ends and tightening them with bolts or screws.

Q: What is the difference between steel pipe and PVC conduit?: Steel pipe and PVC conduit are both used for different purposes and have different characteristics. One of the main differences between steel pipe and PVC conduit is their material composition. Steel pipe is made of a sturdy and durable material, typically carbon steel or stainless steel. This makes it strong and resistant to impact, making it suitable for heavy-duty applications such as plumbing or structural support. On the other hand, PVC conduit is made of polyvinyl chloride, a type of plastic. PVC is lightweight, flexible, and easy to work with, making it ideal for electrical applications such as protecting and routing electrical wires. Another difference is their resistance to corrosion. Steel pipe is more resistant to corrosion than PVC conduit, especially when coated with protective layers such as zinc or epoxy. This makes steel pipe suitable for outdoor applications, underground installations, or environments with high moisture or corrosive elements. PVC conduit, while generally resistant to moisture and chemicals, may deteriorate over time when exposed to sunlight and can be damaged by certain chemicals. Cost is another factor to consider. Steel pipe is generally more expensive than PVC conduit due to its material and manufacturing process. However, steel pipe's durability and long lifespan make it a cost-effective choice in the long run, especially for applications that require high strength and longevity. PVC conduit, on the other hand, is relatively inexpensive and readily available, making it a more affordable option for many electrical projects. Lastly, installation methods differ between the two. Steel pipe is typically joined together using threaded connections or welded joints, requiring specialized tools and skills. PVC conduit, on the other hand, can be easily cut, assembled, and connected using PVC cement or fittings. This makes PVC conduit a more DIY-friendly option for electrical installations. In summary, the main differences between steel pipe and PVC conduit lie in their material composition, resistance to corrosion, cost, and installation methods. Steel pipe is strong, durable, and corrosion-resistant, making it suitable for heavy-duty applications. PVC conduit, on the other hand, is lightweight, flexible, and affordable, making it ideal for electrical projects.

Q: Can steel pipes be used for steam systems?: Yes, steel pipes can be used for steam systems. Steel pipes are commonly used in steam systems due to their high strength and heat resistance properties. They are capable of withstanding high temperatures and pressures, making them suitable for transporting steam safely and efficiently.

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