Company News

2025-05-27

What Are the Types of Welding Processes for Longitudinal Welded Pipes?

Longitudinal welded steel pipes, commonly referred to as straight seam welded pipes, can be classified into two main types based on their welding processes: Electric Resistance Welded (ERW) pipes and Submerged Arc Welded (SAW) pipes. Among them, ERW pipes include high-frequency welded pipes, medium-frequency welded pipes, and low-frequency welded pipes. On the other hand, SAW pipes—often referred to as double-sided submerged arc welded pipes—are known in the industry as LSAW pipes (Longitudinally Submerged Arc Welded pipes).

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2025-05-27

Analysis of the advantages of ERW steel pipe

In the field of modern industrial construction and energy transportation, the importance of steel pipes as basic materials is self-evident. With the continuous advancement of manufacturing technology, ERW steel pipes (Electric Resistance Welded Pipes) have gradually replaced some traditional seamless steel pipes with their efficient production capacity, superior mechanical properties and stable product quality, and are widely used in oil and gas transportation, municipal engineering, heating and water supply, power engineering and steel structure fields.

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2025-05-26

API 5CT J55 Oil Casing Pipe Production and Corrosion Protection

In the oil and gas drilling industry, casing pipe quality and durability are essential to maintaining well integrity and ensuring safe production. Among various casing pipe grades, the API 5CT J55 casing pipe is widely used due to its reliable mechanical properties and suitability for medium-depth wells. An important component in the casing pipe string is the J55 oil casing coupling, which connects every two sections of casing pipe and plays a critical role in the overall performance of the wellbore system.

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2025-05-26

Why Seamless Steel Pipes Are Superior for High-Pressure Applications

Seamless steel pipes offer exceptional durability due to their hardened wear-resistant layer, typically ranging from 3mm to 12mm in thickness. With surface hardness reaching HRC58-62, their wear resistance outperforms regular steel plates by over 15 times and low-alloy steel plates by 5–10 times. Even high-chromium cast iron falls short in comparison. In industries where friction, erosion, and continuous material flow wear out conventional materials, seamless steel pipes provide extended service life and significantly reduce replacement frequency and maintenance costs.

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2025-05-23

What Is the Service Life of a Pipe Elbow?

Generally speaking, its service life may range from 5 years to decades, or even longer. The following is a detailed analysis of the service life of pipe elbows and their influencing factors:

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2025-05-23

Advantages and Specifications of Stainless Steel Seamless Pipes

In modern industrial and architectural applications, stainless steel materials are widely favored for their excellent performance. Among them, 304 stainless steel seamless pipes have become the preferred material in various industries due to their excellent corrosion resistance, strength, hygienic performance and aesthetics. This article will deeply analyze the core advantages of 304 stainless steel seamless pipes from multiple angles to help you understand why it occupies an important position in the fields of chemical industry, petroleum, food, pharmaceuticals, construction, etc.

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2025-05-22

Seamless vs Welded Stainless Steel Pipe

Stainless steel pipe is an economical cross-section steel material and an important product in the steel industry. It can be widely used in life decoration and industry. Many people on the market use it to make stair handrails, window guards, railings, furniture, etc. There are two common materials: 201 and 304. It accounts for about 8% to 16% of the total steel volume, and its application range in the national economy is extremely wide. Stainless steel is divided into two categories according to the production method: seamless pipe and welded pipe. So what is the difference between the two?

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2025-05-22

Precautions in Daily Use of Stainless Steel Flanges

Maintenance of stainless steel flanges is the key to ensure their long-term stable operation and extend their service life. The following are the main maintenance methods for stainless steel flanges:

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2025-05-21

What is ASTM A192 Seamless Carbon Steel Boiler Tube?

In modern industrial systems, the safe operation of boiler and superheater systems is extremely dependent on the quality and pressure resistance of the pipes. ASTM A192 / A192M is a seamless carbon steel boiler tube standard designed for high-pressure environments. It is widely used in power plants, petrochemical plants, heat exchange systems and other working environments with strict requirements for high temperature and high pressure. This article will deeply analyze the specifications, dimensions, tolerances, chemical composition, mechanical properties and applicable fields of ASTM A192 to help buyers and engineers have a more comprehensive understanding of this key industrial pipe standard.

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2025-05-21

Stainless Steel Screen Pipe for Water and Oil Wells

Stainless steel screen pipes are essential components in modern water and oil well systems. Designed to filter out sand, gravel, and other particles, these precision-engineered pipes allow fluids to pass through freely while protecting the wellbore and pumping equipment. Whether used in municipal water supply, agricultural irrigation, industrial wells, or oilfield applications, stainless steel screen pipes ensure high flow efficiency, corrosion resistance, and long-term durability.

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2025-05-20

How to distinguish inferior SSAW steel pipe

In recent years, the demand for SSAW steel pipes (Submerged Arc Welded Spiral Steel Pipes) has surged due to their widespread applications in industries such as oil and gas, construction, and water transportation. However, this growing market has also led to an influx of low-quality and counterfeit SSAW steel pipes in the market. These inferior pipes not only fail to meet performance standards but may also pose safety risks and shorten project lifespans. So how can you identify and avoid substandard SSAW steel pipes? This guide outlines practical ways to ensure you invest in high-quality products and avoid being deceived.

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2025-05-20

API 5L SSAW Steel Pipe for Oil and Gas Pipeline

API 5L SSAW steel pipes are spiral welded pipes designed to meet the American Petroleum Institute’s (API) specification 5L. This standard defines requirements for line pipes used in the transportation of oil, gas, and water across long distances. SSAW refers to the spiral submerged arc welding process, where a steel coil is helically wound into a pipe and then welded both internally and externally using submerged arc welding technology.Unlike seamless or straight seam pipes, SSAW pipes can be manufactured in large diameters and long lengths at a relatively low cost, making them ideal for projects requiring extensive coverage and large pipe sizes.