Company News

• 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.

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• 2025-04-01

  Application of galvanized steel pipe piles

  Galvanized steel pipe piles are a common type of steel pipe piles. They are coated with a layer of zinc on the outer surface of the steel pipe to enhance its corrosion resistance, especially when used in soil or water environments. The galvanized layer can provide anti-corrosion protection and extend the service life of steel pipe piles. Galvanized steel pipe piles are widely used in foundation support and load-bearing structures in projects such as bridges, seawalls, building foundations, roads, railways, etc.

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• 2025-04-01

  Precautions for Producing Small Diameter Seamless Steel Pipes

  Generally speaking, the seamless steel pipes used in daily life are of normal caliber, and small-diameter seamless steel pipes are only used in some special places. Today, I will introduce you to the relevant knowledge of small-diameter seamless steel pipes, which will help you to use this kind of pipe better in the future. Generally speaking, seamless steel pipes with small outer diameters are collectively referred to as small-diameter seamless steel pipes, but there is still a specific range. Generally, steel pipes with diameters below 89mm and above 4mm can be called small-diameter seamless steel pipes.

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• 2025-03-31

  Difference Between Sliding Pipe Flange and Welding Neck Flange

  Flanges are an essential component in pipeline systems, playing a critical role in ensuring secure connections between pipes, valves, and other equipment. Among the many types of flanges used in industries such as oil and gas, petrochemicals, power plants, and water treatment, Slip On (SO) flanges and Welding Neck (WN) flanges are two of the most widely used. While both serve similar functions, their design, application, and performance differ significantly. This article will provide a comprehensive comparison of these two flange types, highlighting their welding methods, materials, pressure ratings, connection methods, costs, and overall performance.

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• 2025-03-31

  Advantages of 3PE anti-corrosion steel pipe

  Common anti-corrosion technology for 3PE anti-corrosion steel pipesAnti-corrosion steel pipes refer to steel pipes that have been processed by anti-corrosion technology to effectively prevent or slow down corrosion caused by chemical or electrochemical reactions during transportation and use.

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• 2025-03-28

  Specs and Weight of Hot Dip Galvanized Square Tube

  Hot-dip galvanized square tube is a square tube made by welding after curling steel plate or steel strip, and then placed in a hot-dip galvanizing pool on the basis of this square tube through a series of chemical reactions. The production process of hot-dip galvanized square tube is relatively simple, and the production efficiency is very high. There are many varieties and specifications. This kind of square tube requires very little equipment and funds, which is suitable for the production of small galvanized square tube manufacturers.

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• 2025-03-28

  Square Tube Strength Calculation and Notes

  As the name implies, a square tube is a steel tube with a square cross-section. It is a hollow, light, thin-walled steel tube, commonly known as a cold-bent steel profile. Square tubes are typically made from Q235 hot-rolled or cold-rolled strip or coil as the base material. These materials are then subjected to cold bending, followed by high-frequency welding to form the square cross-section.

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• 2025-03-27

  Production and Precautions of Precision Steel Pipes

  Precision steel pipes are cold drawn or hot rolled, and have high precision and excellent mechanical properties. The inner and outer walls are smooth and free of oxide layer, and can withstand high pressure without leakage, are not easy to deform, and are not easy to crack when expanded or flattened. Due to these characteristics, precision steel pipes are widely used in the manufacture of pneumatic or hydraulic components such as cylinders and oil cylinders, and can be produced by seamless or welding processes.

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