High Quality ERW Welded Steel Pipes System 1

High Quality ERW Welded Steel 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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ERW Welded Steel Pipes

Application of High Quality ERW Welded Steel 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: bundles with anti-rust painting and with plastic caps

Standard of High Quality ERW Welded Steel Pipes

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

Steel Grade of High Quality ERW Welded Steel 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 High Quality ERW Welded Steel 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

Standard: API SPEC 5L

Mechanical Properties of High Quality ERW Welded Steel Pipes

Standard	Grade	（MPa）			（MPa）
		Yield strength			Tensile Strength
API SPEC 5L	PSL1
	B	≥241			≥414
	×42	≥290			≥414
	×46	≥317			≥434
	×52	≥359			≥455
	×56	≥386			≥490
	×60	≥414			≥517
	×65	≥448			≥531
	×70	≥483			≥565
	PSL2
		Min	Max	Min		Max
	B	241	448	441		758
	×42	290	496	414		758
	×46	317	524	434		758
	×52	359	531	455		758
	×56	386	544	490		758
	×60	414	565	517		758
	×65	448	600	531		758
	×70	483	621	565		758

Chemical Composition (%) of High Quality ERW Welded Steel Pipes

Standard	Grade	C	Mn	P	S	TI	CEV
Standard	Grade	Max	Max	Max	Max	Max	Max
API SPEC 5L	PSL1
	B	0.26	1.2	0.030	0.030	0.04	-
	×42	0.26	1.3	0.030	0.030	0.04
	×46,×52,×56，X60	0.26	1.4	0.030	0.030	0.04
	X65	0.26	1.45	0.030	0.030	0.06
	X70	0.26	1.65	0.030	0.030	0.06
	PSL2
	B	0.22	1.20	0.025	0.015	0.04	0.43
	×42	0.22	1.30	0.025	0.015	0.04
	×46,×52,×56, X60	0.22	1.40	0.025	0.015	0.04
	X65	0.22	1.45	0.025	0.015	0.06
	X70	0.22	1.65	0.025	0.015	0.06

Standard: GB/9711.1

Mechanical Properties of High Quality ERW Welded Steel Pipes

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(%) of High Quality ERW Welded Steel Pipes

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 of High Quality ERW Welded Steel Pipes

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 (%) of High Quality ERW Welded Steel Pipes

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 of High Quality ERW Welded Steel Pipes

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

Chemical Composition(%) of High Quality ERW Welded Steel Pipes

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

High Quality ERW Welded Steel Pipes

Q: How does the price of steel pipes vary based on size and grade?: The price of steel pipes varies based on their size and grade. Generally, larger pipes tend to have higher prices due to the increased amount of materials and manufacturing processes involved. Additionally, the grade of steel used in the pipes also affects the price, with higher-grade steel pipes being more expensive. This is because higher-grade steel offers better strength, durability, and corrosion resistance, making it suitable for specialized applications. Therefore, the price of steel pipes increases as both the size and grade increase.

Q: Can steel pipes be used in the oil and gas industry?: Yes, steel pipes are commonly used in the oil and gas industry. Steel pipes are known for their strength, durability, and resistance to corrosion, making them suitable for transporting and storing various fluids and gases in the industry. These pipes can withstand high pressure and extreme temperatures, which are often encountered in oil and gas operations. Additionally, steel pipes can be easily welded together, allowing for efficient assembly and maintenance. Overall, steel pipes are a reliable and cost-effective choice for the oil and gas industry.

Q: What are the different methods of pipe bending for steel pipes?: There are several methods of pipe bending for steel pipes, each with its own advantages and limitations. 1. Manual Pipe Bending: This method involves using hand tools or a manual pipe bender to bend the steel pipe. It is suitable for small-scale projects or when only a few bends are required. However, it requires skill and precision to ensure accurate and consistent bends. 2. Rotary Draw Bending: This method utilizes a mandrel, clamp die, and a bending die to bend the pipe around a stationary bend die. The mandrel helps to maintain the shape and prevent wrinkling or collapsing of the pipe during the bending process. Rotary draw bending is commonly used for producing tight-radius bends with high accuracy and repeatability. 3. Induction Pipe Bending: In this method, an induction coil is used to heat a specific area of the steel pipe, making it more malleable for bending. Once the desired temperature is reached, the pipe is bent using hydraulic or mechanical force. Induction bending is suitable for large-diameter pipes or when multiple bends are required in a single pipe. 4. Roll Bending: Also known as pyramid rolling, this method involves passing the steel pipe through three adjustable rolls that gradually bend the pipe into the desired shape. Roll bending is suitable for producing large-radius bends and is commonly used in the construction of spiral staircases, handrails, and structural applications. 5. Hot Bending: This method involves heating the steel pipe to high temperatures, typically using a furnace, to facilitate bending. Hot bending allows for greater flexibility in shaping the pipe and is commonly used for large-diameter or thick-walled pipes. However, it requires specialized equipment and expertise to control the temperature and prevent distortion or damage to the pipe. It is important to consider factors such as the required bend radius, pipe diameter, wall thickness, and project specifications when selecting the appropriate method of pipe bending for steel pipes. Consulting with an experienced pipe bending professional or engineer can help determine the most suitable method for a specific application.

Q: What are the safety precautions while working with steel pipes?: When working with steel pipes, it is important to follow several safety precautions. Firstly, always wear protective gear such as gloves, safety glasses, and steel-toed boots to prevent injuries. Secondly, ensure that the work area is properly ventilated to avoid inhaling harmful fumes or gases. Additionally, use caution when handling heavy pipes to prevent strains or sprains. Lastly, be mindful of potential hazards such as sharp edges, hot surfaces, or falling objects, and take appropriate measures to minimize risks.

Q: What is the composition of steel pipes?: Steel pipes are primarily composed of iron and carbon, with trace amounts of other elements such as manganese, phosphorus, sulfur, and silicon.

Q: What are steel pipes made of?: Steel pipes are primarily made of an alloy of iron and carbon, known as steel.

Q: Are steel pipes resistant to earthquakes?: Steel pipes are generally more resistant to earthquakes compared to other materials due to their strength and flexibility. However, their ability to withstand seismic events depends on various factors such as the design, installation, and support systems in place. Overall, steel pipes can provide a higher level of earthquake resistance, but proper engineering and construction practices are crucial to ensure their effectiveness.

Q: What are low-pressure carbon steel tubes?: Any of various steels that contain less than 2.11% of the mass of carbon but contain no alloying elements. Sometimes referred to as plain carbon steel or carbon steel.Carbon steel, in addition to carbon, usually contains a small amount of silicon, manganese, sulfur and phosphorus.1) according to the use of carbon steel can be divided into carbon structural steel, carbon tool steel and easy to cut structural steel three categories, carbon structural steel is divided into engineering construction steel and machine manufacturing structural steel two kinds;(2) by refining methods can be divided into open hearth steel, converter steel;(3) according to deoxidization methods, they can be divided into boiling steel (F), killed steel (Z), semi killed steel (b) and special killed steel (TZ);(4) according to the carbon content of the steel can be divided into low carbon steel (WC = 0.25%), carbon steel (WC0.25% - 0.6%) and high carbon steel (WC>0.6%);(5) according to the quality of steel, carbon steel can be divided into ordinary carbon steel (phosphorus, sulfur, higher), high quality carbon steel (low phosphorus and sulfur) and high quality steel (lower phosphorus and sulfur) and super quality steel.Description: the carbon content in general carbon steel is higher, the hardness is higher, the strength is higher, but the plasticity is lower.

Q: What are the common challenges faced during steel pipe installation?: When installing steel pipes, there are various challenges that may arise. One of these challenges involves the need to ensure that the pipe sections are properly aligned and fit together correctly. Welding or threading is typically used to join steel pipes, and if the alignment is not precise, it can result in leaks or weak points in the pipeline. To overcome this challenge, it is necessary to use careful measurements and alignment techniques to ensure a secure and tight fit between the pipe sections. Another challenge that arises is dealing with corrosion and rust. Steel pipes are prone to corrosion, especially when exposed to moisture or corrosive substances. This can lead to the deterioration of the pipes over time, compromising their structural integrity and increasing the risk of leaks. To address this challenge, it is possible to apply protective coatings or linings to the steel pipes to prevent corrosion and extend their lifespan. Additionally, the weight and size of steel pipes can pose a challenge during installation. Steel pipes are heavy, and it can be physically demanding to maneuver and position them. Moreover, the large diameter of some steel pipes makes it difficult to transport and handle them in tight spaces or through narrow pathways. Overcoming this challenge often requires the use of heavy machinery, such as cranes or forklifts, to lift and position the pipes correctly. Lastly, environmental factors can also present challenges during steel pipe installation. Extreme temperatures, harsh weather conditions, or unstable soil conditions can impact the installation process. For example, freezing temperatures can make it challenging to weld the pipes, while unstable soil may require additional reinforcement or stabilization measures to ensure the longevity of the pipeline. In conclusion, the challenges commonly faced during steel pipe installation include the need for proper alignment, the issue of corrosion and rust, the handling of the weight and size of the pipes, and the consideration of environmental factors. Overcoming these challenges requires careful planning, attention to detail, and the utilization of appropriate techniques and equipment.

Q: What is the maximum operating temperature for steel pipes?: The maximum operating temperature for steel pipes can vary depending on the grade of steel used, but it is generally around 1000°C (1832°F) for standard carbon steel pipes.

As the largest strip-steel production base in china, we can get the advantage of having the lowest goods transport cost. Our company covers an area of 80000 square meter, and transportation here is very convenient. We are mainly engaged in the manufacture and management of high frequency straight seam welded pipe. We now have 11 welded pipe production lines, with daily output of2800-3000 tons of welded pipe ranging from DN15--DN200 (1/2--8 inch),and the designed annual production capacity of 800,000 tons.

1. Manufacturer Overview

Location	Hebei,China
Year Established	2005
Annual Output Value	Above 100 Million RMB
Main Markets	Main land;Middle East;Southeast Asia
Company Certifications	ISO9001

2. Manufacturer Certificates

a) Certification Name
Range
Reference
Validity Period

3. Manufacturer Capability

a) Trade Capacity
Nearest Port	Tianjin；Qingdao
Export Percentage	41% - 50%
No.of Employees in Trade Department
Language Spoken:	English；Chinese；Korean
b) Factory Information
Factory Size:	120mu
No. of Production Lines	11
Contract Manufacturing	OEM Service Offered；Design Service Offered
Product Price Range	High Average