Company News

2024-11-04

Introduction and Advantages of Galvanizing Process

Galvanizing (such as galvanized seamless pipe) is the process of adding a zinc coating to the surface of steel or iron. Because zinc acts as a sacrificial coating, it protects the steel or iron underneath, thereby extending the service life of the metal component.

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2024-11-04

Will 316 Stainless Steel Corrode and Rust?

316 stainless steel is a grade of stainless steel produced according to the American ASTM standard. 316 is equivalent to China's 0Cr17Ni12Mo2 stainless steel. Japan also quoted the American name and called it: SUS316. 316 stainless steel is the second most widely used steel after 304. It is mainly used in the food industry, watch accessories, pharmaceutical industry and surgical equipment. The addition of molybdenum element gives it a special corrosion-resistant structure. Because it has better chloride corrosion resistance than 304, it is also used as "marine steel". SS316 is usually used in nuclear fuel recovery devices.

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2024-11-01

Common connection methods of seamless steel pipes

There are many ways to connect steel pipes (seamless pipes, welded steel pipes, etc.), and the commonly used ones are: crimping, union, compression, push rod, tapered thread, socket welding, union flange connection, welding, and a series of connection methods that combine welding and traditional connection. Different connection methods have different production principles and different applicable fields, but in general, they all have one thing in common, that is, easy installation, firmness and reliability. You can choose a suitable connection method based on the actual situation, because the connection method also has certain requirements for the diameter of the steel pipe.

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2024-11-01

API 5CT N80 Well Pipe Casing

API 5CT is the specification for casing and tubing used in the oil and gas industry. This standard specifies the technical delivery conditions for steel pipes (including casings, tubing, and pup joints), coupling stock, coupling materials, and accessory materials, and sets the requirements for three product specification levels (PSL-1, PSL-2, PSL-3). The N80 grade is an API 5CT well pipe casing, primarily used in oil wells with various end connections (such as non-thickened ends or externally thickened ends).

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2024-10-31

What is the standard length of pup joint?

Pup joints are essential components in industrial pipeline connections, typically used to help adjust the length of the pipe string and compatible with various sizes and connection types. Based on the connection type, pup joints can be classified into threaded and flanged types, with threaded pup joints further divided into double-male thread, single-male thread, and flat-end thread types. Additionally, pup joints can be categorized by their function into tubing pup joints and casing pup joints, widely utilized in oil, natural gas, and other industrial pipeline connections. Baowi Steel offers various sizes of tubing pup joints, both flat-end and externally thickened, with steel grades including J, N, and L to meet different operational requirements.

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2024-10-31

Seamless Pipe HS code

Over the years, the variety of goods has become increasingly diverse, resulting in the need to classify them in a unified and standard way that is generally recognized by global management agencies and companies. The goal of the Harmonized System code is to clearly label all these goods so that various products can be more easily identified internationally.

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2024-10-30

How to calculate the weight of a drill collar?

During the oil extraction process, line pipe is not the only tool needed for successful drilling. Among the materials used with line pipe are drill collars. Drill collars are used to provide weight to the drill bit. They are the tubular section of the drill string, with thick walls, made of steel or special alloys. Another major function of the drill collar is to provide a path for the drilling fluid that is pumped in. The drill collar provides drilling weight to the drill bit and prevents the drill string from bending. In addition, the drill pipe should not be run in a compressed state, otherwise it will be seriously damaged, so we need to know the weight of the drill collar that is enough to provide weight to the drill bit.

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2024-10-30

Spiral Drill Collars Size and Application

The spiral drill collar is an important component of the bottom of the drill string and the core component of the lower drilling assembly (BHA), usually located above the drill bit. As a thick-walled pipe, the wall thickness of the drill collar is about 38 to 53 mm, which is 4 to 6 times the wall thickness of the conventional drill pipe, so it has considerable weight and rigidity. Its main functions include applying drilling pressure, reducing drill bit vibration, and controlling well inclination. In the design of the drill collar, the hanging card groove and the slip groove are usually processed on the outer surface of the internal thread to facilitate the connection and disassembly operation when drilling or pulling out of the hole.

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2024-10-29

How are steel pipe piles repaired and maintained?

Like piling pipe, steel pipe piles are the unsung heroes of the construction industry, providing critical support for numerous structures such as bridges, high-rise buildings, offshore oil platforms and retaining walls of all sizes. However, despite their strong resilience, these critical structural elements are subject to environmental stress and erosion over time, requiring effective repair and maintenance.

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2024-10-29

What is a concrete-filled steel pipe pile?

Steel pipe piles are made of welded steel pipes, spiral welded or seamless steel pipes. They are used for deep foundations and for transferring the load of buildings and other structures to deep underground soil layers. They help resist load pressure by allowing point bearing and surface friction. Steel pipe piles are driven into place with plates or points and can be closed-end or open-end. Some steel pipe piles are filled with concrete to maximize strength and bearing capacity. Sometimes, larger and thicker pipe piles are more cost-effective than filling smaller and thinner piles with concrete. Steel pipe concrete piles are a composite pile with unique advantages and are an alternative to traditional piles.

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2024-10-28

What is Sour Service Steel Pipe?

Sour service steel pipes are suitable for pipelines in corrosive environments. In practical applications, sour service pipes are mainly used in H2S-containing environments in the oil and gas industry. Usually, these pipes need to meet standards such as API Spec 5L and comply with specifications such as NACE MR0175/ISO 15156 to ensure their safety performance in sour environments. According to international regulations, when the partial pressure of H2S in the pipeline reaches 300 Pa (Pa), the bridge used must have the ability to resist acid corrosion. These sour service pipes often use treated specific low-alloy steel or stainless steel, which can effectively inhibit acid corrosion phenomena such as activated corrosion cracking (SCC). As we all know, the corrosion of pipelines is an important factor affecting their safe use and service life. Severe corrosion will cause leakage of oil and gas pipelines, and even cause explosions in severe cases. Pipeline corrosion poses a huge threat to personal safety and environmental pollution, so the production of sour pipelines is of great significance. At present, the manufacturing inspection standards for sour pipelines are mainly based on API Spec 5L.

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2024-10-28

ERW Structural Pipe Piling Pipe

Steel pipe piles are a type of building material made of steel pipes, mortises and tenons, and are usually designed for use in structures such as offshore docks to support and stabilize foundations. Steel pipe pile products are widely used, especially in areas above water or with low soil bearing capacity. According to different needs, steel pipe piles can be manufactured using processes such as seamless, electric resistance welding (ERW), fusion welding and flash welding. Common types include longitudinal and spiral steel pipe piles. The ERW (electric resistance welding) structural pipe piling pipe has become the first choice for many engineering projects due to its stability and high cost performance.