Company News

2025-04-10

Advantages and precautions of stainless steel welded pipes

Stainless steel welded pipes are made by reacting molten metal with iron matrix to produce alloy layer, so that the matrix and coating are combined. Hot-dip galvanizing is to pickle the steel pipe first. In order to remove the iron oxide on the surface of the steel pipe, after pickling, it is cleaned in an ammonium chloride or zinc chloride aqueous solution or a mixed aqueous solution of ammonium chloride and zinc chloride, and then sent to the hot-dip galvanizing tank. Hot-dip galvanizing has the advantages of uniform coating, strong adhesion and long service life.

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2025-04-10

304 Stainless Welded VS Seamless Pipe

As an important steel product, stainless steel pipes are widely used in many fields such as building decoration, industrial manufacturing, chemical pipelines, food hygiene, medical equipment, etc. According to different production processes, stainless steel pipes are mainly divided into two categories: seamless pipes and welded pipes. Although both are stainless steel materials, there are many differences in manufacturing methods, structural characteristics, performance, and usage scenarios.

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2025-04-09

Difference between steel pipe pile and steel sheet pile

In construction and civil engineering, steel piles are essential elements that provide stability and support to structures. Among the most common types of steel piles are steel pipe piles and steel sheet piles. Although both serve to support foundations and structures, they have different characteristics, installation methods, and applications. In this article, we will explore the key differences between these two types of steel piles.

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2025-04-09

What is API 5L Standard

In the oil and gas industry, the safety and reliability of pipelines are of vital importance. In order to ensure the uniform standards of oil and gas pipelines worldwide, the American Petroleum Institute (API) has developed a series of standards, among which API 5L is one of the core standards for steel pipes. So, what is API 5L? Why is it important? What fields does it apply to? This article will analyze API 5L in depth.

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2025-04-08

Advantages and disadvantages of galvanized steel pipe

Galvanized steel pipe is a kind of pipe material widely used in construction, machinery, chemical industry and other fields. Its manufacturing process and production method play a vital role in the quality and performance of the product. The surface of the galvanized pipe is coated with a layer of zinc, which can effectively protect the steel from corrosion. It is usually used in outdoor buildings, such as fences and handrails, or some indoor pipes. In practical applications, understanding the advantages and disadvantages of galvanized steel pipes can help us choose the right materials according to needs, thereby improving the quality and efficiency of the project. Galvanized steel pipes have both unique advantages and certain disadvantages.

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2025-04-08

MS Rectangular Tube Meaning

MS Rectangular Tube refers to Mild Steel rectangular hollow sections. These tubes are made from low-carbon steel, providing strength and versatility at a reasonable cost. Low carbon steel (with less than 0.25% carbon content) does not harden easily, making it highly workable and user-friendly. Because of its low carbon content, mild steel can be easily welded and shaped into various pipe forms and structural sections. Known for their rectangular shape and hollow structure, MS tubes are widely used in construction, engineering, fabrication, and industrial applications.

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2025-04-07

API Spec 7-1 Drill Collar

Drill collars are auxiliary equipment used at the bottom of the drill string and are key components of the drill tool assembly. The main features of drill collars are thick wall thickness and high gravity. The wall thickness is generally 38~53mm, which is equivalent to 4~6 times that of the drill pipe. Due to the special working environment, the drill collar exerts pressure on the drill bit during the rock breaking process and plays a leading role in straight hole drilling. It needs to have good rigidity.

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2025-04-07

Standards and Characteristics of Ductile Iron Pipes

What is a ductile iron pipe? As the name implies, ductile iron pipe is a type of cast iron pipe. In addition to ductile iron pipe, other cast iron pipe categories include gray cast iron pipe, cement cast iron pipe, etc. Ductile iron pipe refers to a water supply pipe formed by centrifugal casting after molten iron in blast furnace is spheroidized. Due to the spheroidization treatment, ductile iron pipe itself has good plasticity, toughness and mechanical properties. It is widely used in municipal pipe network, water supply pipe network and large-scale water conservancy projects. It is an advantageous pipe in the field of water supply.

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2025-04-03

SSAW Steel Pipe Rust Removal and Preservation Method

Now, with the continuous development of China's economy, the country encourages the development of the energy industry. At this time, a large number of welded pipes will be used. When we use welded pipes, we need to maintain and maintain them. When we maintain and rust the spiral welded pipes, what should we do?

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2025-04-03

Why does precision seamless pipe rolling cause cracking?

Precision seamless pipes are widely used in high-precision industries such as automobiles, aviation, and hydraulics, and their quality requirements are extremely strict. However, during the production process, rolling cracking problems often occur, affecting the strength and service life of the pipe. This article will analyze the main causes of rolling cracking of precision seamless pipes and propose corresponding preventive measures.

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2025-04-02

Differences Between API 5D and API 5DP

In the oil and gas industry, choosing the right drill pipe specification is critical to ensuring the safety and efficiency of drilling operations. The American Petroleum Institute (API) has established several standards for drill pipe manufacturing, including API 5D and API 5DP. These two specifications are closely related, but apply to different operational needs. Understanding the difference between API 5D and API 5DP is important for selecting the right pipe based on the conditions of the drilling environment.

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2025-04-02

API 5DP

API 5DP is a crucial standard in the oil and gas industry that specifies the technical requirements for steel drill pipes used in drilling and production operations. It covers the requirements for upset ends, tool joint welding, and various performance aspects, ensuring drill pipe quality and durability to meet the demanding conditions of drilling environments.API 5DP standard specifies the delivery technical conditions for three product specification levels (PSL-1, PSL-2 and PSL-3) of steel drill pipe with pipe end upset and drill pipe joint butt welding for drilling and production operations in the petroleum and natural gas industry. The requirements of PSL-1 form the basis of this international standard. Appendix G specifies the technical requirements for different levels of PSL-2 and PSL-3.