People always confused about how to describe steel pipe dimensions (sizes) in correct ways, or how to clarify to seller what exactly pipe size we are going to purchase. In case any misunderstandings or a different size we purchased, that will be a big trouble.

ASTM A335 pipe (with Grade P9, P11, P22, P91 pipes) has been widely used in different industries for high temperature, high pressure services. According to market data, it is one of the most consumption alloy pipes in boiler industry, heat exchanger, power station, high and super high pressure vessels.

People always confused about how to describe steel pipe dimensions (sizes) in correct ways, or how to clarify to seller what exactly pipe size we are going to purchase. In case any misunderstandings or a different size we purchased, that will be a big trouble.

OCTG drill pipe, often called the “lifeline” of oil and gas drilling. Nondestructive testing (NDT) is a key quality assurance measure for OCTG drill pipe, applied from manufacturing to decommissioning, and must comply with industry standards such as API 5DP.

Angle steel is one of the most widely used steel structures.The connection process of angle steel is the “bond” that links structural members together. Connection quality directly affects structural stability and safety. Poorly executed connections may lead to equipment failure or even building collapse. Therefore, mastering scientific and reliable connection techniques is essential for the efficient application of angle steel.

As a core material in oil and gas exploration, OCTG pipes are engineered to withstand complex downhole conditions. With adaptability, reliability, and full-process coverage, they have become indispensable in ensuring safe and efficient oil and gas production. Their advantages can be highlighted in the following aspects.

Although OCTG Pipe and Line Pipe are both essential steel pipes in the energy industry, they serve very different purposes. Their distinctions lie in definition, performance requirements, structural design, and applicable standards. The comparison can be made across five core dimensions.

The drill pipe is a vital component in the drilling process, primarily responsible for transmitting torque and transporting drilling fluid. By gradually adding drill pipe sections, the wellbore is extended to the desired depth. Selecting the appropriate drill pipe size and length is crucial, as it directly affects drilling efficiency, operational costs, and safety.

The service life of oil casing and tubing is closely tied to the entire life cycle of an oil well, often determining how long the well can operate safely and efficiently. In oil and gas production, casing pipes are typically used once, cemented in place, and permanently left underground. Their longevity depends on multiple factors, including material quality, threaded connections, geological conditions, construction practices, and ongoing maintenance. In most cases, casing service life ranges between 15 and 30 years, though actual performance may vary significantly.

Galvanized steel pipe is widely used in plumbing, construction, and outdoor projects because of its excellent corrosion resistance. However, welding galvanized pipe requires extra care compared with standard steel pipe. The zinc coating that protects the pipe can release hazardous fumes when heated, and improper welding may compromise both the weld quality and the protective layer. This guide explains how to weld galvanized steel pipe safely and effectively.

In oil, gas, and geological exploration drilling, the drill string assembly plays a decisive role in ensuring drilling efficiency and wellbore quality. Two essential components within this system are the Heavy Weight Drill Pipe (HWDP) and the Drill Collar. While they may look somewhat similar, their structure, functions, and applications differ significantly. Understanding these differences helps engineers and drilling teams choose the right tool for the right job.

Pipe bending is a critical process in many industries, from construction and shipbuilding to oil & gas and manufacturing. One of the most important parameters to understand during this process is the bend radius. The bend radius directly affects pipe integrity, flow efficiency, and installation requirements.

ERW (Electric Resistance Welded) pipe is one of the most widely used steel pipes in modern industries. It is manufactured by rolling steel sheets or strips and welding them longitudinally using electric resistance. The result is a strong, cost-effective pipe with a smooth finish and uniform wall thickness. But what exactly is ERW pipe used for?

Schedule 80 steel pipe refers to a wall thickness classification defined by the American National Standards Institute (ANSI) and the American Society of Mechanical Engineers (ASME). The actual wall thickness of Schedule 80 pipe depends on its nominal pipe size (NPS) — the larger the diameter, the thicker the wall in absolute terms.

When it comes to steel pipes, corrosion resistance is always a key concern. One of the most commonly used methods to enhance durability is galvanization. Among the different galvanization techniques, pre-galvanized steel pipes stand out as a widely adopted solution in construction, infrastructure, and industrial projects.

The length of a steel casing pipe depends on its diameter, installation environment, and application requirements. While standard lengths are commonly used, specific projects may require customization. Choosing the right length is essential to ensure both installation efficiency and long-term performance.

In the high-stakes world of oil, gas, and water well exploration, safety and stability are the cornerstones of success. Central to achieving both is a critical steel tubular product known as casing pipe. While it may not be the pipe that transports oil or gas to the surface, its role is arguably more critical. As a steel pipe supplier, understanding the definitive purpose of casing is key to appreciating its immense value and serving the vital industries that depend on it.

In the vast landscape of industrial materials, few are as fundamental and ubiquitous as carbon steel plate. Renowned for its exceptional strength, durability, and versatility, it serves as the foundational material for countless applications that shape our modern world. From towering skyscrapers to essential machinery, carbon steel plate is the unsung hero supporting global progress. For us in the steel pipe industry, a deep understanding of this crucial material is key to appreciating market dynamics and serving our customers' needs effectively.

Galvanized steel pipes are essential in modern construction and industrial applications, known for their durability and corrosion resistance. Among them, the 424 galvanized steel pipe stands out for its reliable performance and broad utility across numerous industries. This article highlights its key features, typical applications, and manufacturing process.

Structural pipe is a type of steel pipe specifically manufactured and used for structural applications—not for transporting fluids or gases. Unlike standard piping used in plumbing or energy industries, structural pipe serves as a critical component in construction, support frameworks, and mechanical structures. Its key advantage lies in its strength, versatility, and availability in various sizes and grades to meet engineering requirements.

Traditional API casing threads (such as long round and partial trapezoidal threads) are not well-suited for the development of high-pressure gas fields, primarily due to limitations in air-tightness and tensile strength. To address these challenges, many manufacturers have developed proprietary premium connections with enhanced sealing and mechanical performance. Among them, several gas-tight special thread types have proven suitable for demanding gas field applications.