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2025-05-29

Ductile Iron Pipe Manufacturing Process from Melting to Inspection

Ductile iron is an iron-carbon alloy. It is made of high-quality cast iron with low sulfur and low phosphorus, and then spheroidized to make the carbon in it exist as spherical free graphite, thereby eliminating the defect of metal crystal continuity being cut off caused by flake graphite. It has the essence of iron and the performance of steel. It not only does not lose the castability and corrosion resistance of cast iron, but also increases the tensile strength, elongation, bending and impact resistance, that is, it has the high strength and toughness of steel. The urban water supply network mainly uses pipes and fittings cast by ductile iron, which is recognized by the urban water supply industry in various countries. At present, the development of foreign ductile iron pipe casting technology mainly adopts water-cooled metal mold centrifugal casting technology.

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2025-05-28

ASTM A53 standard for galvanized steel pipes

ASTM A53 is a standard specification for seamless pipe and welded pipe black and hot-dip galvanized steel pipes. Galvanizing is to provide additional corrosion resistance by immersing the steel pipe in molten zinc to form a zinc layer on its surface.

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2025-05-28

Performance advantages of SA192 seamless pipe

In the high-pressure industrial application scenario, SA192 seamless tube has become the core material of key equipment such as superheater and heat exchanger tube with its excellent performance, and plays an irreplaceable role in many industries such as energy and chemical industry.

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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.