ASTM A106 seamless pipe also known as ASME SA106 pipes generally refers to pipes that are of seamless construction and are majorly used for transportation of gas and liquid from one location to another location, ASTM A106 pipes are most suitable for High-temperature services and handle a good amount of pressure. These pipes are manufactured as per the dimension standard of ANSI B36.10 / ASME B36.10. In ASTM A106 Grade B is the most commonly used pipe, this grade is the client’s first choice for use, due to economical prices and ease of availability throughout the world.
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The pipes have minimum Yield strength of 240 MPa for grade B pipes and 275 MPa for grade C pipes and minimum tensile strength of 415 MPa for grade B pipes and 485 MPa for grade C pipes with a minimum elongation of 16.5%/30%.
The pipes are manufactured by cold drawn finish process or Hot finished process. Cold draw finish pipes require subsequent heat treatment of Normalizing at 900 deg. C. These pipes are mainly used in industries such as oil and gas refineries, petrochemical plants, boiler, chemical plants, Shipbuilding.
N-Pipe Solutions Inc. is a major supplier of Carbon Steel Seamless pipes from India. We provide high-quality pipes to clients throughout the world. Pipes are stock in NPS/NB dimension as per ASME B36.10 in various thicknesses as per clients requirements. All pipes supplied by us are duly inspected by our in-house quality control department before being supplied to the client. All pipes are available with complete traceability and mill test certificate as per EN 3.1.
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ASTM A 530/A 530M Specification for General Requirements for Specialized Carbon and Alloy Steel Pipe.
ASMT E 213 Practice for Ultrasonic Examination of Metal Pipe and Tubing.
ASTM E 309 Practice for Eddy-Current Examination of Steel Tubular Products Using Magnetic Saturation.
ASMT E 381 Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings.
ASTM E 570 Practice for Flux Leakage Examination of Ferromagnetic Steel Tubular Products.
ASME B36.10M Dimension standard for Seamless and Welded pipes.
The steel shall be killed steel, with the primary melting process being open-hearth, basic-oxygen, or electric-furnace, possibly combined with separate degassing or refining.
Steel cast in ingots or strand cast is permissible
For pipe NPS 1-1/2 and under, it shall be permissible to furnish hot finished or cold drawn.
For pipe NPS 2 [DN 50] and over shall be furnished hot finished.
Each length of pipe shall be subjected to the hydrostatic test without leakage through the pipe wall. The hydro test produces stress in the pipe wall equal to 60% of SMYS (Specified minimum Yield strength) at room temperature. For pipes upto 3” NPS hydro test cannot exceed PSI and for size greater than 3” it cannot exceed PSI.
Carbon steel seamless tubes are essential components used in various industries for their robustness, durability, and versatility. These tubes are manufactured without any welding seam, ensuring uniform strength and structural integrity, making them ideal for critical applications like heat exchangers, boilers, and pipelines. Choosing the right grade of Carbon steel seamless tubes is paramount to ensuring performance, longevity, and cost-effectiveness in any project. Read on to learn more.
Carbon steel is a blend of iron and carbon. It also contains small amounts of other elements like manganese and silicon. Sometimes, it may also contain sulfur and phosphorus. The carbon content in these tubes significantly influences their properties, determining their suitability for specific applications.
The classification of carbon steel grades is based on their carbon content:
Alloying elements like manganese, silicon, and others are added to enhance specific properties such as strength, corrosion resistance, and machinability.
Several factors should be considered when selecting the appropriate grade of carbon steel seamless tubes:
Overview of Commonly Used Grades
When selecting carbon steel seamless tubes for specific applications such as heat exchangers, it’s essential to consider the appropriate grade that meets the required specifications and performance standards. Here are some commonly used grades known for their reliability and suitability in various industrial sectors:
ASTM A106 is a standard specification for seamless carbon steel pipes for high-temperature service. This grade of carbon steel seamless tubes is widely used in industries such as oil refineries, power plants, and boilers due to its excellent high-temperature strength and resistance to corrosion. ASTM A106 seamless tubes are available in grades A, B, and C, with varying tensile and yield strength levels.
ASTM A53 is another widely used standard specification for seamless and welded carbon steel tubes. It is commonly used for general-purpose applications in industries such as plumbing, mechanical, and structural. ASTM A53 seamless tubes are available in three types – Type F (continuous welded), Type E (electric resistance welded), and Type S (seamless).
API 5L is a specification for seamless and welded steel pipes suitable for conveying gas, water, and oil in the natural gas and petroleum industries. This standard covers seamless and welded carbon steel pipes, with various grades such as API 5L Grade B and X42 to X70, designed for specific transportation requirements.
ASTM A179 is specifically designed for seamless cold-drawn low-carbon steel heat exchangers and condenser tubes. These tubes are widely used in industries requiring heat transfer equipment due to their excellent thermal conductivity and corrosion resistance. ASTM A179 seamless tubes are typically used in applications where high heat transfer efficiency is essential, such as in boilers, heat exchangers, and condensers.
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Each of these grades has unique properties and characteristics tailored to specific applications. For example, ASTM A106 and API 5L grades are preferred for high-pressure and high-temperature applications in the oil and gas industry, whereas ASTM A179 is ideal for low-pressure and low-temperature heat exchanger applications.
When selecting carbon steel seamless tubes for heat exchangers, it’s crucial to consider several factors:
Application-Specific Guidelines
Choosing the right grade of carbon steel seamless tubes involves considering specific properties and applications to ensure optimal performance and reliability across various industries. Let’s explore how different grades cater to specific requirements:
ASTM A53 (Type S/E): ASTM A53 seamless tubes are commonly used in structural applications such as construction, bridges, and buildings due to their versatility and ease of fabrication. Type S and Type E tubes offer excellent weldability and formability, making them ideal for structural frameworks and load-bearing components.
ASTM A179: ASTM A179 seamless tubes are specifically designed for heat exchangers and condensers, offering exceptional thermal conductivity and corrosion resistance in low-temperature environments. These tubes efficiently transfer heat between fluids, making them ideal for boilers, heat exchangers, and HVAC systems.
Low Carbon Steel (e.g., ASTM A333 Grade 6): Low carbon steel seamless tubes like ASTM A333 Grade 6 are commonly used in automotive and machinery applications where ductility, weldability, and impact resistance are essential. These tubes are suitable for components requiring bending, machining, and forming.
High-Strength Carbon Steel (e.g., ASTM A106 Grade C): carbon steel seamless tubes with higher carbon content and tensile strength are used in pressure vessel applications where durability and reliability under extreme pressure conditions are critical. ASTM A106 Grade C tubes are suitable for pressure vessels in chemical processing plants and power generation facilities.
Importance of Consulting with Material Experts or Engineers
Selecting the right grade of carbon steel seamless tubes involves a comprehensive understanding of application requirements, operating conditions, and material properties. Consulting with experienced material experts or engineers is crucial to ensuring optimal performance and cost-effectiveness in your project. Here’s why their expertise is invaluable:
Material experts can assess the specific application requirements, such as temperature, pressure, and environmental factors, to recommend the most suitable grade of carbon steel seamless tubes. They consider factors like corrosion resistance, thermal conductivity, and mechanical strength to ensure the chosen grade meets or exceeds performance expectations.
Engineers can help evaluate the required mechanical properties, including tensile strength, yield strength, hardness, and ductility, based on the intended use of the seamless tubes. This ensures the selected grade can withstand the stresses and demands of the application without compromising structural integrity.
Experts can advise on the effects of fabrication processes like welding, bending, and forming on different grades of carbon steel tubes. Certain grades may require specific techniques or post-weld treatments to maintain their properties and performance.
By considering factors such as service life, maintenance requirements, and potential operational challenges, material experts can recommend grades that offer optimal long-term performance and durability. This proactive approach helps prevent premature failures and unexpected downtime.
To ensure the selection of the right grade of carbon steel seamless tubes, follow these essential steps:
Consulting with material experts or engineers throughout these steps ensures a comprehensive and informed decision-making process, leading to the selection of the most suitable grade of carbon steel seamless tubes for your specific application.
When choosing carbon steel tubes, prioritising quality assurance and compliance with industry standards is paramount to ensure safety, reliability, and performance. Here’s why it matters:
Experience the difference with custom carbon steel seamless tubes tailored to your exact specifications. Whether you require tubes for heat exchangers, boilers, pipelines, or structural applications, our expert team is ready to deliver superior quality and performance. Collaborate with Anand Seamless Ltd. to design tubes that meet your unique requirements for strength, durability, corrosion resistance, and more.
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