WELDED LSAW STEEL PIPE

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LSAW Steel Pipe

1 Size: 219-3200 mm*5-25.4mm
2 Material Q235/Q345/20#/X42-X65/J55 etc

Standard:
EN-10208-1/2, GB9711.1/2 etc.

Steel Grade:
B, X42 up to X70; L245, L290 up to L48

Usage:
Used for Steel Structure

Size:
LSAW from 219.1mm to 3200mm, thickness from 5mm to 25.4mm
Ends: Beveled ends with protector

Surface:
Bare / Varnish coating / FBE, 3PE coating DIN30670 / or by client option

Packing:
Casing, bundled shipping in containers or by break bulk vessel

Process	Longitudinal Submerged- Arc Welded Steel Pipe (DSAW -Double Submerged arc welded)
Usage	Used for liquid delivery, such as water, gas, and oil; construction and piling
Standard	API 5L(PSL1,PSL2), ASTM A252,EN10217, EN10219,KS F4602, KS D3583, BS, JIS, IS
Certificate	ISO 9001:2008, ISO 14001, ISO 18001, API 5L (PSL1, PSL2),EN10217, EN10219 and so on.
Outside Diameter	323.9 mm-2134 mm (12"-84")
Wall Thickness	6 mm - 80mm
Length	6 – 14 m
Grade	API 5L: GR A, GR B, X42,X46, X56, X60,X65,X70 ASTM A252 GR 1, GR 2, GR 3 EN 10219: S275, S275JR, S355JRH, S355J2H EN 10224, L235,L275,L355
Surface	Fusion bond Epoxy coating, Coal Tar Epoxy, 3PE, Varnish Coating, Bitumen Coating, Black Oil coating as per customer’s requirement
Test	Chemical Component Analysis, Mechanical Properties (Tensile strength, Yield strength, Elongation), Hydrostatic Test, X-ray Test,Size Inspection.
Mill Test Certificate	Mill Test Certificate:EN 10204/3.1B

Q:Can steel pipes be used for marine applications?: Yes, steel pipes can be used for marine applications. Steel pipes have excellent strength and corrosion resistance, making them suitable for various marine environments. They are commonly used in shipbuilding, offshore structures, and underwater pipelines due to their durability and ability to withstand harsh conditions in saltwater.

Q:What is the weight of steel pipes?: The weight of steel pipes can vary depending on their size, length, and thickness. However, on average, steel pipes typically weigh between 1.1 to 1.5 pounds per foot.

Q:Can steel pipes be used for conveying liquids and gases?: Indeed, the utilization of steel pipes extends to the conveyance of both liquids and gases. These pipes find widespread application across a multitude of industries, including oil and gas, water supply, plumbing, and industrial processes. Their commendable attributes encompass robustness, longevity, and resistance to corrosion. Consequently, steel pipes possess the capacity to withstand elevated pressure and temperature, rendering them ideal for the transportation of an extensive array of liquids and gases such as water, oil, natural gas, steam, and chemicals. Furthermore, the convenience of welding or threading steel pipes together facilitates effortless installation and maintenance procedures.

Q:What is the difference between steel pipes and fiberglass-reinforced pipes?: The main difference between steel pipes and fiberglass-reinforced pipes lies in their composition and structural characteristics. Steel pipes are made of a durable metal alloy, typically carbon steel, which provides strength and resistance to high pressure and temperature. On the other hand, fiberglass-reinforced pipes are composed of a plastic matrix reinforced with glass fibers, making them lightweight, corrosion-resistant, and suitable for various applications. While steel pipes are commonly used in industrial settings, fiberglass-reinforced pipes are often utilized in sectors requiring corrosion resistance, such as chemical processing, wastewater treatment, and oil and gas industries.

Q:How are steel pipes used in the construction of hydroelectric power plants?: Steel pipes are used in the construction of hydroelectric power plants for various purposes, such as transporting water, containing and directing the flow of water, and supporting the weight of turbines and other equipment. They are typically used for penstocks, which are large pipes that carry water from the dam to the turbines, and for discharge pipes that release water back into the river. The strength and durability of steel pipes make them ideal for withstanding the high pressure and heavy loads involved in hydroelectric power generation.

Q:How are steel pipes used in the manufacturing of furniture and appliances?: Steel pipes are commonly used in the manufacturing of furniture and appliances due to their strength, durability, and versatility. One of the main uses of steel pipes in furniture manufacturing is for constructing the frames or structures of various pieces, such as chairs, tables, and beds. These pipes are often used as the primary support system, providing a sturdy and reliable foundation for the furniture. In appliances, steel pipes are utilized for various purposes. They are commonly employed in the manufacturing of kitchen appliances, such as stoves, ovens, and refrigerators, to create the internal framework and support the weight of the appliance. Steel pipes are also frequently used in the production of washing machines, dryers, and dishwashers to transport water and other fluids throughout the appliance. Furthermore, steel pipes are utilized in the manufacturing of outdoor furniture and equipment, where weather resistance and durability are crucial. These pipes are often coated with protective materials to prevent rust and corrosion, ensuring the longevity of the furniture and appliances. Overall, steel pipes play a vital role in the manufacturing of furniture and appliances, providing the necessary strength and support required for these items. Their versatility allows for various applications, making them an essential component in the production process of these goods.

Q:How are steel pipes used in the aerospace industry?: Steel pipes are widely used in the aerospace industry for various applications. One of the primary uses of steel pipes in aerospace is for the construction of aircraft frames, where they provide the necessary strength and structural integrity. Steel pipes are often used in the fuselage, wings, and landing gear of airplanes, as well as in rocket launch vehicles and space shuttles. Steel pipes are favored in the aerospace industry due to their exceptional strength-to-weight ratio. They are lightweight yet incredibly strong, allowing for the construction of durable and reliable aerospace structures. This is particularly crucial in the aerospace industry, where weight reduction is a significant concern to enhance fuel efficiency and overall performance. Additionally, steel pipes are also utilized for the transportation of fluids and gases within aircraft systems. They are commonly used in the aircraft's hydraulic and fuel systems, carrying crucial fluids such as hydraulic fluid, fuel, and coolant. Steel pipes ensure the safe and efficient flow of these fluids throughout the aircraft, contributing to its proper functioning and performance. Furthermore, steel pipes are employed in the aerospace industry for heat transfer purposes. They are used as part of the aircraft's cooling systems, helping to dissipate heat generated by engines, electrical components, and other systems. Steel pipes are known for their excellent thermal conductivity, making them an ideal choice for transferring heat away from critical areas and preventing overheating. In summary, steel pipes play a vital role in the aerospace industry. They are used in aircraft construction for their strength and structural integrity, as well as for fluid and gas transportation and heat transfer. The use of steel pipes in the aerospace industry ensures the safety, efficiency, and reliability of aerospace structures and systems.

Q:How do you determine the maximum allowable stress for a steel pipe?: Several factors need to be taken into account in order to determine the maximum stress that a steel pipe can withstand. The type of steel used in the pipe is of utmost importance, as different types have varying mechanical properties and strengths. Additionally, the dimensions and thickness of the pipe are significant factors in determining its maximum stress capacity. Generally, thicker pipes have higher stress limits compared to thinner ones. Furthermore, it is crucial to consider the operating conditions that the pipe will be exposed to. This includes the temperature, pressure, and the nature of the fluid flowing through the pipe. These conditions can greatly impact the maximum stress that the pipe can tolerate. For instance, high temperatures or corrosive fluids can weaken the steel and reduce its strength. Engineers typically rely on industry standards and codes, such as the ASME Boiler and Pressure Vessel Code and the API standards, to determine the maximum stress limit. These standards provide guidelines and formulas for calculating the maximum stress based on the material properties, dimensions, and operating conditions of the pipe. It is important to emphasize that determining the maximum stress limit is a critical step in ensuring the structural integrity and safety of the steel pipe. It requires a comprehensive understanding of the materials, design considerations, and industry standards. Therefore, it is advisable to seek guidance from experienced engineers or professionals who specialize in piping design and analysis to accurately determine the maximum stress that a steel pipe can withstand.

Q:What is the weight of hot galvanized steel tubes? DN150 4mm wall thickness: GB/T3091-2008: DN150 welded steel pipe, wall thickness of 6mm, the theory of the weight of welded steel pipe 24.02kg/m, galvanized steel pipe should be multiplied by the weight coefficient after galvanizing, C, DN150, wall thickness of 6mm, C=1.02, DN150, theoretical weight and wall thickness of 6mm galvanized steel 1.02*24.02= 24.5kg/m.

Q:How are steel pipes threaded?: Threading, a process that involves creating screw-like grooves on the outer surface of steel pipes, enables their connection to other pipes or fittings using threaded connections. Steel pipes can be threaded through various methods, including manual threading, electric threading machines, and hydraulic threading machines. Manual threading employs a handheld pipe threading tool called a die. The die is positioned on the outside of the pipe, and while pressure is applied, the pipe is rotated to generate the threads. This technique is suitable for smaller diameter pipes and is commonly used for on-site repairs or in smaller operations. For larger diameter pipes, electric threading machines are commonly used. These machines consist of a motor-driven spindle that rotates the pipe and a die head that houses the threading dies. The operator simply feeds the pipe into the machine, and the threading dies automatically cut the threads onto the pipe. Hydraulic threading machines, similar to electric threading machines, utilize hydraulic power to rotate the pipe and create the threads. These machines are typically employed for larger diameter pipes or heavy-duty applications. Irrespective of the method employed, it is crucial to properly prepare the pipe before threading. This may involve cleaning the pipe, eliminating any burrs or sharp edges, and applying a lubricant to minimize friction during the threading process. In conclusion, threading is a widely used and efficient technique for establishing threaded connections on steel pipes. It facilitates easy assembly and disassembly of pipes and fittings, making it a popular choice in industries such as plumbing, construction, and oil and gas.

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