Introduction: The Trusted Solution forHigh-Pressure Environments With the global expansion of energy infrastructure, LNG (Liquefied Natural Gas) terminals and refinery plants demand pipeline systems that can withstand high pressure, elevated temperatures, and corrosive media. These environments place extreme requirements on material integrity, welding quality, and inspection standards. Among various steel pipe materials, ASTM A672 pipe has become a preferred choice due to its excellent mechanical strength, weldability, and pressure-grade versatility. With over 20 years of experience, LONGMA Steel Pipe Factory has provided advanced Electric…

As one of the most widely used electric fusion welded (EFW) carbon steel pipes, ASTM A672 pipe is essential for high-pressure applications in oil, gas, and power generation industries. However, during manufacturing, improper control of welding parameters, raw material quality, or heat treatment can lead to defects that affect the pipe’s strength, reliability, and compliance with the ASTM A672 specification. This article provides an in-depth analysis of the common defects found in ASTM A672, their causes, testing standards, and preventive measures…

In high-pressure water, steam, and oil transmission systems, ASTM A672 steel pipes are widely used due to their excellent weldability, mechanical strength, and consistent performance under pressure. For such critical applications, ensuring that each pipe is free from cracks, inclusions, or porosity is essential to system safety and reliability. That’s why all ASTM A672 material must undergo rigorous Non-Destructive Testing (NDT) procedures before shipment to verify both weld and base metal integrity. This article introduces the major NDT methods for ASTM A672 pipes,…

In modern power plants, refineries, and industrial facilities, the demand for reliable high-pressure piping is greater than ever. Whether transporting superheated steam or high-pressure water, the material must withstand extreme temperature, internal stress, and corrosion. Among the available materials, ASTM A672 pipe has become one of the most trusted choices worldwide for high-pressure water and steam lines. With over 20 years of manufacturing experience, LONGMA Steel Pipe has built a strong reputation as a China ASTM A672 exporter, producing high-quality ASTM A672 C60,…

In modern power plants, petrochemical systems, and high-pressure steam pipelines, ASTM A672 steel pipes are widely used for their excellent mechanical strength, weld integrity, and reliability. Among these, Grades C60, C65, and C70 are the most common materials under the ASTM A672 standard, each offering distinct advantages in strength, temperature tolerance, and cost-efficiency. This article explores the key performance differences between these grades, providing engineers and procurement professionals with data-driven insights for selecting the right material. Overview of the ASTM A672 Standard…

In today’s era of rapid infrastructure and energy development, ASTM A672 welded steel pipes have become a key component in oil, gas, chemical, and power projects due to their exceptional strength, weldability, and pressure resistance. As a manufacturer with over 20 years of experience, LONGMA strictly adheres to international standards and employs advanced manufacturing and testing technologies to ensure that every ASTM A672 pipe meets or exceeds performance requirements in strength, toughness, and corrosion resistance. Overview of ASTM A672 Standard and Material…

In today’s highly competitive global infrastructure market, ASTM A671 steel pipes have become a trusted choice for high-pressure and high-temperature applications, especially in power plants, refineries, and long-distance oil and gas transmission systems. With over two decades of manufacturing expertise, LONGMA is committed to producing ASTM A671 EFW pipes that meet international standards and deliver exceptional reliability. This article provides an in-depth look into the entire production and quality assurance process of ASTM A671 steel pipes—from raw steel selection to final inspection—and…

In the global landscape of energy transmission and large-scale infrastructure, ASTM A671 steel pipes have become indispensable due to their excellent weldability, high-temperature strength, and pressure resistance. From transcontinental oil and gas pipelines to ultra-supercritical power plants, ASTM A671 pipes play a crucial role in ensuring the safety, efficiency, and reliability of the world’s most demanding engineering projects. Overview of ASTM A671 Standard and Its Applications ASTM A671 is a specification issued by the American Society for Testing and Materials (ASTM) for…

In modern industrial applications, ASTM A671 EFW pipes are widely recognized for their excellent mechanical strength, corrosion resistance, and high-quality welding performance. They are the preferred material in energy, chemical, and power generation industries. With over 20 years of experience, LONGMA has become a trusted global manufacturer by leveraging advanced technology, strict quality control, and a deep understanding of the ASTM A671 material standard. This article takes you inside LONGMA’s production process — exploring how advanced manufacturing and testing techniques ensure the reliability…

Overview of ASTM A671 Standard ASTM A671 is a specification developed by the American Society for Testing and Materials (ASTM) for Electric Fusion Welded (EFW) carbon steel pipes intended for pressure service at low to moderate temperatures. These pipes are widely used in petrochemical plants, natural gas pipelines, and power generation systems. Compared with seamless pipes, the ASTM A671 EFW pipe offers excellent weld quality, consistent mechanical strength, and greater cost efficiency, making it a popular choice in global infrastructure and energy projects.…

In modern industrial and energy applications, choosing the right steel pipe grade is essential for ensuring safety, reliability, and long-term performance. ASTM A671 steel pipes are widely used in oil & gas, chemical, and power industries due to their strict mechanical properties, chemical composition, and welding standards. This article explores the key differences between ASTM A671 CC60, CC65, and CC70 grades, their applications, and how LONGMA ensures quality with advanced production and testing capabilities. Overview of ASTM A671 Standard ASTM A671 is the…

In modern energy, chemical, and power industries, ASTM A671 steel pipe is widely used in medium- and high-temperature transport systems due to its excellent pressure resistance and weldability. The standard primarily covers Electric Fusion Welded (EFW) carbon steel pressure pipes, especially ASTM A671 EFW pipe, which demonstrates reliable and stable performance in boilers, heat exchangers, petrochemical facilities, and long-distance pipelines. This article explores the welding technology, inspection methods, and how LONGMA ensures global customer trust through rigorous quality control. ASTM A671 Standard…

In offshore and subsea engineering, the reliability and corrosion resistance of pipelines directly affect project safety and service life. Under extreme conditions such as high salinity, high pressure, and strong corrosive environments, ASTM A671 steel pipe demonstrates excellent mechanical performance, chemical stability, and consistent weld quality. This article provides an in-depth analysis of ASTM A671 pipes’ mechanical properties, chemical composition, testing standards, and application advantages, while showcasing LONGMA’s production and inspection capabilities. ASTM A671 Standard and Marine Engineering Suitability ASTM A671 is…

In modern industrial piping systems, selecting high-quality steel pipes is essential to ensure long-term safety and reliable operation. ASTM A671 pipe is widely used in petroleum, natural gas, chemical, and power generation industries due to its strict requirements for mechanical properties and chemical composition. This article provides a comprehensive analysis of ASTM A671 steel pipes, including their mechanical performance, chemical composition, testing methods, and application fields. It also highlights LONGMA’s manufacturing and quality control advantages, offering valuable insights for project engineers…

In modern infrastructure and industrial projects, the piping network serves as a vital channel for transporting water, gas, steam, and other process fluids. The durability and safety of a pipeline system depend heavily on the material selected. Among various carbon steel pipe standards, ASTM A53 Grade B — also known as ASTM A53 B — has become one of the most trusted choices for engineers and contractors worldwide, thanks to its reliable mechanical properties, corrosion resistance, and excellent weldability. Overview of the…