P91 steel pipe is a type of alloy steel that is commonly used in high-temperature and high-pressure applications, particularly in the power generation industry. P91 steel is part of the 9% chromium, 1% molybdenum family of steels, which are designed for use in environments where high strength, oxidation resistance, and resistance to creep (deformation under stress at elevated temperatures) are essential. It is known for its ability to maintain good mechanical properties at high temperatures.

A heat number (also called a heat lot number) is a unique identifier assigned to a specific batch of steel or metal that is produced during a particular melting or heat process. It plays a crucial role in traceability, ensuring that each pipe can be linked back to the specific material batch it was made from. The heat number provides detailed information about the chemical composition, production process, and quality of the steel used in the manufacturing of pipes.

Measuring the bend angle of a pipe, especially for applications where precise angles are needed (e.g., in piping systems, construction, or engineering projects), requires accurate tools and methods to ensure the bend conforms to the desired specifications. Here are common ways to measure the bend angle of a pipe.

P11 and P22 are material grades commonly used in the manufacturing of steel pipes, especially for applications in high-temperature and high-pressure environments such as in power plants, boilers, and other industrial systems. These grades refer to specific types of alloy steel that are known for their ability to withstand elevated temperatures while maintaining good mechanical properties.

DSAW pipe refers to Double Submerged Arc Welded pipe, a type of steel pipe commonly used in various industries, particularly for the transportation of oil, gas, and other fluids. It is characterized by its welding process, which involves two submerged arc welding passes to create a strong, durable seam along the pipe’s length.

A pup joint is a short section of pipe used in the oil and gas industry, specifically in drilling and completion operations. It is typically used to adjust the length of the drill string, casing, or tubing to ensure the proper alignment or fit in the wellbore.

A drill pipe is a steel pipe with a threaded end, designed to connect the surface equipment of a drilling rig with the drilling and grinding apparatus or bottom-hole device at the well's bottom. Drill pipes are typically made from seamless tubes or welded pipes. Their primary functions include transporting drilling mud to the drill bit and facilitating the movement (raising, lowering, or rotating) of the bottom-hole device in conjunction with the drill bit. This article will discuss common issues encountered during drill pipe inspections and their solutions.

Well casing pipes are essential components used in various wellbores, including oil wells, gas wells, and water wells. These pipes are installed along the wellbore walls and serve critical functions such as supporting the well walls, isolating different geological strata, protecting well equipment, and preventing well wall collapse. Given the harsh underground environment, well casing pipes are exposed to numerous corrosion threats, including formation water, hydrogen sulfide, carbon dioxide, and other aggressive substances. Therefore, implementing effective anti-corrosion measures is crucial for ensuring the longevity and safety of the well casing pipes. Below are common methods used to combat corrosion in these pipes.

When it comes to the safe and efficient storage of petroleum casing, several critical precautions must be observed to ensure the integrity of the casing, the safety of personnel, and the prevention of environmental hazards. Here is an expanded list of precautions for stacking petroleum casing.

The distinction between oil casing and oil drill pipe can be summarized into two primary aspects: their respective applications and the materials they are made from.

Casing pipe threads are essential for connecting sections of casing pipes securely and efficiently, ensuring a reliable seal and structural stability in underground applications like oil, gas, and water wells. Threaded connections on casing pipes must provide a tight fit to prevent leaks and withstand various operational pressures. Here’s an overview of the most common types of casing pipe threads and their applications.

Casing pipes are essential for encasing and protecting various underground installations. These steel casings safeguard utility lines from environmental factors and potential damage from future construction activities, such as digging or drilling. Here, we explore the main applications of API 5CT casing pipes.

The United Arab Emirates (UAE) has become a significant player in the global steel tubing market, thanks to its robust construction sector and strategic investments in manufacturing. This guide provides an overview of steel tubing in the UAE, covering its types, applications, manufacturing processes, and market trends.

The OCTG (Oil Country Tubular Goods) pup joint is a versatile pipe component that can be cut to various lengths to create a casing string of the precise total length required for specific applications.Here's an overview of the OCTG pup joint.

Piling pipes, essential in foundation engineering, are made from materials designed to endure varied geological and environmental conditions while providing robust support. Their applications range from enhancing load-bearing capacity to stabilizing soil layers, making them indispensable in construction and infrastructure projects. Below is an overview of the materials used in piling pipes and their specific functions.

When selecting casing pipes for wells that do not have stringent requirements for anti-corrosion or strength, grades J55 and K55 are popular choices. This article will highlight the differences between these two grades.

Electric Resistance Welded (ERW) oil casing is widely used in the oil and gas industry, primarily for the structural support of oil, gas, and water wells during drilling and completion operations. This article will briefly introduce ERW oil casing application and market analysis.

Oil casing pipes play a critical role in supporting the walls of oil, gas, and water wells, ensuring their stability after drilling and completion. They are essential for the normal operation of oil and gas wells. However, issues such as improper selection, poor quality, or mishandling during transportation, storage, and use can lead to casing damage. This, in turn, can reduce production rates or even cause wells to be abandoned, resulting in significant economic losses for oil and gas companies. So, how should one go about purchasing oil casing pipes?

Here's an overview of the rules for the thread of casing pipe.

Oil casing pipe is considered a premium product in the steel pipe industry, with a wide variety of specifications. There are 15 different outer diameter sizes, ranging from 114.3mm to 508mm. The steel grades are categorized into 11 types, including J55, K55, N80, L-80, P-110, C-90, C-95, and T-95. Various end connection types are available for oil casing pipes, such as STC, LC, BC, and VAM. The production and installation process of oil casing pipes involves a series of rigorous tests, which include the following.

The welding of oil casings involves complex processes where even slight mechanical failures or inconsistencies can lead to issues such as the formation of short joints. A short joint in oil casing welding typically occurs due to factors like internal mechanical malfunctions, such as roller or shaft eccentricity, excessive welding power, or misalignment. These problems disrupt the welding process, resulting in defects that compromise the overall quality of the weld. Understanding these factors and how they affect the welding process is critical for producing high-quality oil casing joints.