EXPANDED STEEL PIPE ASTM A 53/ASTM A36 /ASTM A500

EXPANDED STEEL PIPE ASTM A 53/ASTM A36 /ASTM A500

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 20 m.t.

Supply Capability:: 10000 m.t./month

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Product Name	Expanding Pipe \ Longitudinally welded steel pipe / ERW Steel pipe / Carbon steel pipe/ HFW steel pipe
Size	OD	273mm-820mm
	Thickness	6.5mm-20mm
	Length	6m-20m
Steel Material	Q195/Q215A/Q215B/Q235A/Q235B/Q345A /Q345B
Standard	GB/T3091 GB/T9711.1/ASTM A53/API 5L /ASTM A252
Usage	Low Pressure Fluid (Water, Gas) Transmission
Surface	Bare Pipe or Black Painting
Protector	Bare or Plastic cap
Package	Bundles, Bulk
Inspection	With Hydraulic Testing, Ultrasonic testing or X-ray Test
Certificate	API and ISO9001;2000
Date of Delivery	Less Than 15/20/25/30/40/50/60 Days According To The Quantity
Payment term	L/C or T/T
Port of Shipment	Xingang,China

Q: How do you inspect steel pipes for defects?: The inspection of steel pipes for defects requires a methodical approach that combines visual examination, non-destructive testing (NDT) techniques, and specialized equipment. The following are the typical steps undertaken to inspect steel pipes for defects: 1. Visual Examination: Commence by visually inspecting the external surface of the pipe, searching for any visible indications of defects, including cracks, dents, or corrosion. Particular attention should be given to welds, joints, and areas prone to stress or damage. 2. Ultrasonic Testing (UT): Ultrasonic testing is commonly employed to identify internal defects in steel pipes. This technique involves transmitting ultrasonic waves into the pipe and then interpreting the echoes received. Any irregularities in the internal structure, such as cracks or voids, can be identified and analyzed. 3. Magnetic Particle Inspection (MPI): MPI is a widely utilized technique for detecting defects on or near the surface, such as cracks, seams, or other discontinuities. This method involves applying a magnetic field to the pipe and subsequently applying ferromagnetic particles (usually iron-based) to the surface. These particles accumulate and form visible indications at areas where magnetic flux leakage is caused by defects. 4. Eddy Current Testing (ECT): Eddy current testing is suitable for detecting surface and near-surface defects in conductive materials like steel. This technique involves inducing an alternating current into the pipe and monitoring changes in the electrical currents induced by any present defects. These changes are then analyzed to identify and evaluate the defects. 5. Radiographic Testing (RT): Radiographic testing is conducted by exposing the steel pipe to X-rays or gamma rays and capturing radiographic images of the pipe. This technique allows for the detection of internal defects, such as cracks, porosity, inclusions, or variations in wall thickness. The radiographic images are subsequently examined for any indications of defects. 6. Dye Penetrant Inspection (DPI): DPI is a method used to identify defects on the surface of steel pipes. It involves applying a liquid dye to the surface, which penetrates into any surface cracks or flaws. After sufficient time for the dye to seep in and react, excess dye is removed, and a developer is applied to draw out the dye from the defects, rendering them visible. 7. Pressure Testing: Pressure testing entails pressurizing the steel pipe to a predetermined level and monitoring for any pressure drops or leaks. This test ensures that the pipe can withstand the required pressure without any structural defects. It is worth noting that the choice of inspection technique depends on various factors, such as the type of defect being sought, the size and characteristics of the pipe, and the specific industry standards and regulations. Inspection professionals with expertise in NDT methods and equipment are typically employed to ensure precise and dependable results.

Q: What is the difference between steel pipes and PVC-M pipes?: Steel pipes are made of a strong and durable metal, while PVC-M pipes are made of a thermoplastic material known as polyvinyl chloride modified. The main difference lies in their composition and characteristics. Steel pipes are typically heavier and more robust, offering greater strength and resistance to high pressure and temperature. On the other hand, PVC-M pipes are lightweight, flexible, and corrosion-resistant, making them ideal for applications where chemical resistance and ease of installation are crucial factors.

Q: What is the difference between carbon steel and cast iron pipes?: The main difference between carbon steel and cast iron pipes lies in their composition and manufacturing processes. Carbon steel pipes are made from an alloy of iron and carbon, with additional elements such as manganese and silicon added for specific properties. They are typically stronger and more durable, making them suitable for high-pressure and heavy-duty applications. On the other hand, cast iron pipes are made by melting iron and pouring it into molds, resulting in a more brittle and less flexible material. Cast iron pipes are commonly used for drainage and sewage systems due to their corrosion resistance and sound insulation properties.

Q: How do you select the right size of steel pipe for a project?: To select the right size of steel pipe for a project, you need to consider factors such as the intended application, flow rate, pressure requirements, and structural integrity. It is essential to consult industry standards and guidelines, conduct engineering calculations, and seek professional advice to determine the appropriate pipe size that ensures optimal performance and safety for your specific project.

Q: Can steel pipes be used for both high-pressure and low-pressure systems?: Yes, steel pipes can be used for both high-pressure and low-pressure systems. Steel pipes are known for their strength and durability, making them suitable for various applications. They are capable of withstanding high pressures without deformation or leakage, while also being reliable for low-pressure systems.

Q: What are the thermal properties of steel pipes?: Steel pipes have excellent thermal properties. They have a high thermal conductivity, which means they can efficiently transfer heat. Additionally, steel pipes have a high melting point, making them suitable for handling high temperatures without any significant deformation or damage.

Q: How can steel pipes be protected from corrosion?: Steel pipes can be protected from corrosion through various methods such as applying protective coatings, using cathodic protection techniques, implementing proper maintenance and inspection procedures, controlling water chemistry, and utilizing corrosion inhibitors.

Q: How are steel pipes used in the chemical industry?: Steel pipes are widely used in the chemical industry for various purposes such as transporting chemicals, gases, and liquids. They are known for their strength, durability, and resistance to corrosion, making them suitable for handling corrosive substances. Steel pipes are used for transferring raw materials, intermediate products, and final products within chemical plants, as well as for connecting different equipment and machinery. They are essential for maintaining a safe and efficient flow of chemicals throughout the industry.

Q: What are the common applications of seamless steel pipes?: Due to their unique properties, seamless steel pipes are widely used in various industries. Here are some of the most common applications: 1. The oil and gas industry extensively utilizes seamless steel pipes for transporting oil, gas, and other fluids. These pipes are preferred because of their high strength, durability, and resistance to corrosion, making them suitable for harsh environments. 2. Seamless steel pipes are extensively used in construction projects, such as building, bridge, and tunnel construction. They are ideal for structural applications due to their ability to withstand heavy loads and provide excellent strength and stability. 3. The automotive industry relies on seamless steel pipes for manufacturing automotive parts, including exhaust systems, engine components, and hydraulic systems. These pipes offer high strength, reliability, and resistance to heat, making them suitable for demanding automotive applications. 4. Various mechanical and engineering applications benefit from the usage of seamless steel pipes. They are commonly used for carrying fluids, gases, and steam, as well as for transmitting power in machinery and equipment. 5. Power plants extensively utilize seamless steel pipes for transporting steam and hot water. These pipes are capable of withstanding high pressure and temperature, making them ideal for power generation applications. 6. The petrochemical industry heavily relies on seamless steel pipes for transporting chemicals, gases, and liquids. These pipes have excellent resistance to corrosion, which is essential when dealing with hazardous and corrosive substances. 7. The mining industry utilizes seamless steel pipes for various applications, including the transportation of slurry, water, and other mining-related fluids. These pipes offer durability, reliability, and resistance to abrasion, making them suitable for the challenging mining environment. 8. The aerospace industry finds applications for seamless steel pipes in manufacturing aircraft components, such as hydraulic systems, fuel lines, and structural parts. These pipes provide a high strength-to-weight ratio and resistance to extreme temperatures and pressure. Overall, seamless steel pipes play a crucial role in a wide range of industries. Their exceptional properties, including strength, durability, resistance to corrosion and high temperatures, make them an essential component in various industrial processes and infrastructure development.

Q: What are the safety precautions to consider when working with steel pipes?: When working with steel pipes, it is important to consider several safety precautions. First, always wear personal protective equipment, including gloves, safety glasses, and steel-toed boots to protect against potential injuries. Additionally, ensure that the work area is clear of any tripping hazards and that all tools and equipment are in good working condition. It is crucial to follow proper lifting techniques and use machinery or equipment, such as cranes or forklifts, to move heavy steel pipes to prevent strains or injuries. Furthermore, be cautious of potential fire hazards by keeping flammable materials away from the work area and having fire extinguishers readily available. Finally, regularly inspect the steel pipes for any defects or damages, as working with compromised pipes can pose significant risks.

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