The utility of the various high frequency welded pipe ERW

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 4000 m.t./month

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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).

Standard of ERW Welded Pipes: API SPEC 5L, API SPEC 5CT, ASTM A53, GB/T9711.1

Steel Grade of ERW Welded 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 ERW Welded Pipes:

Standard: GB/9711.1

Mechanical Properties

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

Q: What does "steel pipe SC" mean?: SC is an ordinary welded pipe, equal to water professional DN, SC is welded steel pipe concealed, general pipe wall is relatively thick, S represents pipe material, C represents laying mode, TC stands for wire pipe concealed, pipe wall is thinner.

Q: Can steel pipes be used for underground cable conduits?: Yes, steel pipes can be used for underground cable conduits.

Q: What are the advantages of using steel pipes over other materials?: Using steel pipes instead of other materials has several advantages: 1. Exceptional strength and durability: Steel pipes have the ability to withstand high pressure, heavy loads, and extreme weather conditions. This makes them suitable for various uses, such as transporting fluids and gases, providing structural support, and laying underground pipelines. 2. Enhanced resistance to corrosion: Steel pipes can be coated with different materials to increase their resistance to corrosion. This makes them ideal for transporting corrosive substances like water and chemicals without the risk of pipe degradation. Additionally, steel pipes are less prone to rust, which prolongs their lifespan. 3. Long-term cost-effectiveness: Although the initial cost of steel pipes may be higher than other materials, they offer long-term cost-effectiveness. Due to their durability and resistance to corrosion, steel pipes require less maintenance and replacement, resulting in reduced operational costs over time. 4. Versatility: Steel pipes come in various sizes, shapes, and thicknesses, making them versatile for different applications. They can be easily customized and fabricated to meet specific requirements, such as bending, welding, and threading. 5. Fire resistance: Steel pipes have a high melting point, making them resistant to fire and reducing the risk of structural damage in case of a fire incident. This characteristic is particularly important in industries where fire safety is crucial, such as oil and gas, chemical, and construction. 6. Environmentally friendly: Steel is a recyclable material, and steel pipes can be recycled and reused multiple times without compromising their quality. This not only reduces the demand for new materials but also contributes to environmental sustainability. 7. Excellent flow characteristics: Steel pipes have smooth internal surfaces, minimizing friction and allowing for efficient flow of fluids and gases. This advantage is particularly significant in industries where fluid dynamics and energy efficiency are essential, such as oil and gas, water supply, and HVAC systems. In conclusion, steel pipes offer numerous advantages over other materials, including strength, durability, corrosion resistance, cost-effectiveness, versatility, fire resistance, eco-friendliness, and excellent flow characteristics. These advantages make steel pipes the preferred choice for a wide range of applications in various industries.

Q: What is the difference between carbon steel and cast iron pipes?: Various industries widely use carbon steel and cast iron pipes for different purposes. The composition and properties of these two types of pipes distinguish them from each other. 1. In terms of composition, carbon steel pipes consist mainly of iron and carbon, with trace amounts of manganese, phosphorus, sulfur, and other elements. In contrast, cast iron pipes are created by melting iron and adding a small percentage of carbon, typically ranging from 2-4%. 2. When it comes to strength and durability, carbon steel pipes generally outperform cast iron pipes. Carbon steel possesses a higher tensile strength, enabling it to handle greater pressures and reducing the likelihood of damage or deformation. On the other hand, cast iron, while strong, is more brittle and prone to cracking. 3. Carbon steel pipes necessitate additional coatings or treatments to safeguard them against corrosion. If not properly protected, these pipes can be vulnerable to rust and corrosion, particularly when exposed to moisture or corrosive substances. Conversely, cast iron pipes have inherent corrosion resistance due to the formation of a protective layer of iron oxide (rust) on their surface. 4. Cast iron pipes are typically heavier than carbon steel pipes, making them more challenging to handle and install. Comparatively, carbon steel pipes are lighter, facilitating easier transportation and installation. 5. Cast iron pipes excel in sound-dampening properties, resulting in quieter fluid flow. Conversely, carbon steel pipes tend to transmit more noise and vibrations. 6. In terms of cost, cast iron pipes generally carry a higher price tag than carbon steel pipes due to additional manufacturing processes and the increased cost of raw materials. In conclusion, the distinctions between carbon steel and cast iron pipes encompass their composition, strength, corrosion resistance, weight, noise transmission, and cost. The choice between the two relies on the specific application, budgetary considerations, and environmental factors.

Q: What are the different methods of pipe inspection for steel pipes?: Steel pipes can be inspected using various methods. Here are some commonly employed techniques: 1. Visual Inspection: Trained inspectors visually examine both the exterior and interior of the pipe to detect any visible defects or abnormalities. This preliminary method is often used before more advanced techniques are applied. 2. Magnetic Particle Inspection (MPI): By applying a magnetic field to the steel pipe and iron particles to its surface, inspectors can identify surface cracks or defects. Leakage of magnetic flux caused by these abnormalities can be detected with this method, which is particularly effective for ferromagnetic materials. 3. Ultrasonic Testing (UT): UT is a non-destructive testing method that utilizes high-frequency sound waves to identify internal defects or anomalies in steel pipes. A transducer sends ultrasonic waves into the pipe, and reflections or echoes of the sound waves are analyzed to determine the presence of defects, such as corrosion, cracks, or variations in wall thickness. 4. Radiographic Testing (RT): This method involves using X-rays or gamma rays to create an image of the internal structure of the steel pipe. The resulting image reveals any defects, such as cracks, corrosion, or weld discontinuities. RT is commonly used for inspecting welded joints. 5. Eddy Current Testing (ECT): ECT is a non-destructive testing technique that utilizes electromagnetic induction to detect surface and near-surface defects in steel pipes. By passing a coil carrying an alternating current over the pipe's surface, any changes in electrical conductivity or magnetic field caused by defects are detected and analyzed. 6. Acoustic Emission Testing (AET): AET involves detecting and analyzing high-frequency acoustic signals emitted by materials undergoing deformation or damage. In the case of steel pipes, AET can monitor and identify defects like cracks, leaks, or corrosion by analyzing the acoustic signals emitted during service or under stress. These methods are just a few examples of commonly used techniques for inspecting steel pipes. The choice of method depends on factors such as the type of defect being sought, accessibility of the pipe, desired sensitivity level, and cost and time constraints. Using a combination of inspection techniques is often recommended to ensure a thorough assessment of steel pipes.

Q: Can steel pipes be used for sewage treatment plants?: Yes, steel pipes can be used for sewage treatment plants. Steel pipes are commonly used in sewage treatment plants due to their durability, strength, and resistance to corrosion. They are suitable for transporting sewage, wastewater, and other fluids in these facilities.

Q: How are steel pipes insulated to prevent heat gain?: Steel pipes are insulated to prevent heat gain by applying a layer of thermal insulation material around them. This insulation material acts as a barrier, preventing the transfer of heat from the surrounding environment to the steel pipes. Additionally, the insulation is often covered with a protective outer layer to enhance its durability and resistance to external factors.

Q: Are steel pipes suitable for use in hydropower plants?: Yes, steel pipes are suitable for use in hydropower plants. Steel pipes offer several advantages such as high strength, durability, and corrosion resistance, making them ideal for transporting water or fluids in hydropower plants. Additionally, steel pipes can withstand high pressure and temperature conditions, ensuring smooth and efficient operation of the hydropower plant.

Q: What is the role of steel pipes in the renewable energy sector?: The transportation and distribution of various energy sources in the renewable energy sector heavily rely on steel pipes. An important application of steel pipes is seen in the construction of pipelines for transporting natural gas, which is increasingly being used as a cleaner alternative to traditional fossil fuels. Due to its strength, durability, and resistance to corrosion, steel is commonly chosen for these pipelines, ensuring the secure and efficient delivery of natural gas to power plants and other energy consumers. Furthermore, steel pipes are utilized in the installation of geothermal energy systems. Geothermal energy utilizes the heat from the earth's core to generate electricity or provide heating and cooling. Steel pipes are employed to create geothermal wells, allowing the extraction of hot water or steam from underground reservoirs. These pipes must withstand high temperatures and pressures, making steel an ideal material for this purpose. Additionally, hydraulic systems for hydroelectric power plants heavily rely on steel pipes. These power plants generate electricity using the force of flowing water, and steel pipes are used to convey water from the reservoir to the turbines. The durability and reliability of steel ensure the efficient transmission of water, enabling hydroelectric power plants to produce clean and renewable energy. In the construction of solar power plants, steel pipes also play a crucial role. Solar thermal systems concentrate sunlight to generate heat, which is then transferred to a fluid to produce steam and drive turbines. Steel pipes are essential for circulating and transferring this fluid, ensuring the effective operation of the solar power plant. In conclusion, steel pipes are indispensable in the renewable energy sector due to their strength, durability, and resistance to corrosion. They facilitate the transportation of natural gas, the extraction of geothermal energy, the transmission of water in hydroelectric power plants, and the circulation of fluids in solar power plants. By enabling the efficient distribution of various energy sources, steel pipes significantly contribute to the growth and sustainability of the renewable energy sector.

Q: Are steel pipes suitable for industrial applications?: Steel pipes are an excellent choice for industrial applications. They come with several advantages that make them the preferred option in various industries. Firstly, their strength and durability are exceptional, enabling them to withstand high pressure and heavy loads. This makes them perfect for transporting liquids, gases, and solids. Furthermore, steel pipes exhibit high resistance to corrosion, a critical feature in industrial settings where exposure to harsh chemicals, moisture, and extreme temperatures is common. Their corrosion-resistant properties ensure a longer lifespan and reduce the need for frequent maintenance and replacements. Additionally, steel pipes have a smooth interior surface, minimizing friction and allowing for efficient material flow. This is particularly vital in industries like oil and gas, where the smooth flow of fluids is essential for proper operations. Moreover, steel pipes offer a wide range of sizes and thicknesses, allowing for customization and flexibility in design. They can be easily welded and connected, facilitating simple installation and modification as per specific industrial requirements. Overall, steel pipes provide a combination of strength, durability, corrosion resistance, and versatility, making them highly suitable and widely used in various industrial applications such as oil and gas, construction, water treatment, power generation, and chemical processing.

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