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:What is an electric welded pipe (EFW)? Seek help！: According to the operation requirements of the electric welding machine, connect the lead wire and set up the proper welding parameter of the electric welding machine, which can be operated by manual or automatic two input methods.After checking, start the electric welding machine and enter the welding process. When the welding time is reached, the machine will automatically enter the cooling state.When the pipe completely removed after cooling, electric fusion welding machine.Cutting the pipe with the cutting tool of plastic pipe or fine toothed saw with cutting guide device, and making its end face perpendicular to the axis of pipe. Remove the edges of the edges with a knife, scrape the weld area in the pipe or spigot end and clean the weld area.Should use the special fixture as far as possible to secure the components to be connected, and the roundness of the pipe shall not exceed 1.5% of the outer diameter of the pipe, or it should be corrected on the corresponding fixture.

Q:Can steel pipes be used in extremely cold temperatures?: Indeed, steel pipes are capable of being utilized in frigid temperatures. Renowned for its robustness and endurance, steel proves itself suitable for a plethora of applications, even in the most extreme wintry conditions. Steel pipes exhibit a remarkable resistance to low temperatures, withstanding the detrimental effects of freezing without compromising their structural integrity. Consequently, they prove to be ideal for deployment in industries such as oil and gas, where they encounter sub-zero environments. Moreover, the option to insulate or coat steel pipes further fortifies them against the cold, preemptively averting issues like freezing or cracking. In summary, steel pipes unquestionably represent a trustworthy choice for deployment in exceedingly cold temperatures.

Q:How do you calculate the pipe flow rate for steel pipes?: To calculate the pipe flow rate for steel pipes, you can use the Hazen-Williams equation or the Darcy-Weisbach equation. These equations take into consideration factors such as the pipe diameter, length, roughness, and the pressure difference between the two ends of the pipe. By plugging in these values into the respective equation, you can determine the flow rate of the fluid passing through the steel pipe.

Q:Are steel pipes suitable for use in mining applications?: Yes, steel pipes are highly suitable for use in mining applications. Steel pipes offer excellent durability, strength, and resistance to corrosion, making them ideal for transporting various materials, such as water, gases, and minerals, in mining operations. Additionally, steel pipes can withstand high pressure and extreme temperatures, ensuring their reliability and longevity in demanding mining environments.

Q:What is the flexibility of steel pipes?: Steel pipes possess exceptional flexibility, rendering them highly versatile and suitable for a wide array of applications. Their flexibility is derived from the inherent properties of steel, such as its high tensile strength and ductility, enabling them to bend and endure various forms of stress without breaking or deforming. The structural integrity of steel pipes remains intact even when bent or shaped into different forms. This facilitates simpler installation and routing around obstacles, making them more adaptable for intricate plumbing or piping systems. Furthermore, the flexibility of steel pipes allows them to withstand external forces like ground movements or temperature fluctuations without sustaining significant damage. Moreover, the flexibility of steel pipes makes them ideal for applications that involve dynamic movement or expansion. In the case of oil and gas pipelines or heating and cooling systems, where temperature variations can lead to expansion and contraction, steel pipes can accommodate these changes without causing leaks or failures. Additionally, the flexibility of steel pipes contributes to their durability and longevity. The ability to endure bending and stress prevents the formation of cracks or fractures that could result in leaks or structural failures. This characteristic establishes steel pipes as a dependable choice for demanding environments, including high-pressure systems or corrosive conditions. To sum up, the flexibility of steel pipes is a crucial attribute that allows for effortless installation, adaptability to diverse conditions, and long-term reliability. Due to their remarkable flexibility, steel pipes are extensively preferred in numerous industries and applications where strength, durability, and versatility are paramount.

Q:Are steel pipes suitable for use in hydropower plants?: Yes, steel pipes are suitable for use in hydropower plants. Steel pipes offer excellent durability, strength, and resistance to corrosion, making them ideal for transporting water or other fluids in hydropower systems. Additionally, steel pipes can withstand high pressure and provide efficient flow rates, ensuring reliable and efficient operation of the hydropower plant.

Q:How do steel pipes handle ground freezing and thawing?: Steel pipes are highly resistant to ground freezing and thawing due to their inherent strength and durability. They are designed to withstand extreme temperature variations without significant damage or deformation. Additionally, steel pipes have low thermal conductivity, meaning they do not transfer heat as easily as other materials, allowing them to maintain their structural integrity even in freezing conditions. Thus, steel pipes are an excellent choice for underground infrastructure and can effectively handle ground freezing and thawing.

Q:What are the different wall thicknesses available for steel pipes?: There are various wall thicknesses available for steel pipes, depending on the specific requirements and applications. Steel pipes come in different schedules, which indicate the wall thickness. The most common wall thicknesses for steel pipes are Schedule 40, Schedule 80, and Schedule 160. Schedule 40 steel pipes have a relatively medium wall thickness and are commonly used for general-purpose applications, such as conveying fluids and gases. They are suitable for low-pressure systems and are widely used in plumbing, HVAC, and irrigation systems. Schedule 80 steel pipes have a thicker wall compared to Schedule 40 pipes and are designed for high-pressure applications. They are commonly used in industrial settings, oil and gas pipelines, and high-pressure fluid transport systems. The increased wall thickness provides higher strength and durability to withstand the pressure. Schedule 160 steel pipes have the thickest wall among the commonly available options. They are designed for extremely high-pressure applications, such as in refineries, chemical plants, and power generation facilities. These pipes provide exceptional strength and can handle the intense pressure and stress found in these industrial environments. Apart from these standard schedules, there are also other wall thicknesses available for specific purposes. For example, extra-strong (XS) pipes have a thicker wall than Schedule 80 pipes and are used for applications that require even higher pressure resistance. It is important to consult with professionals or refer to industry standards to determine the appropriate wall thickness for a specific application. Factors such as fluid or gas pressure, temperature, and environmental conditions should be considered when selecting the appropriate steel pipe with the desired wall thickness.

Q:What are the safety precautions when working with steel pipes?: When working with steel pipes, it is important to follow safety precautions to minimize the risk of accidents and injuries. Some key safety measures include wearing appropriate personal protective equipment (PPE) such as gloves, safety glasses, and steel-toed boots to protect against cuts, burns, and falling objects. It is crucial to use proper lifting techniques or equipment when handling heavy steel pipes to avoid strains or back injuries. Additionally, workers should be cautious of potential hazards such as sharp edges, welding sparks, or exposure to hazardous materials. Regular inspection and maintenance of equipment and tools is necessary to ensure their safe operation. Proper training, awareness of surroundings, and adherence to safety protocols are essential for a secure working environment when dealing with steel pipes.

Q:Can steel pipes be used for underground cable ducting?: Yes, steel pipes can be used for underground cable ducting. Steel pipes are commonly used in underground cable ducting due to their strength, durability, and resistance to external factors such as corrosion and impact. They provide reliable protection for cables and are an effective solution for underground cable installations.

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