Galvanized Seamless Pipe Introduction

Galvanized seamless steel pipe has high strength and can withstand greater pressure, but the wall thickness of seamless steel pipe is relatively heavy and the cost is relatively high. Galvanized seamless steel pipes are widely used in the manufacture of rings for oil drill pipes, automobile transmission shafts, and steel scaffolding.

Difference Between Galvanized Welded Steel Pipe and Galvanized Seamless Steel Pipe:

Galvanized weled steel pipe and galvanized seamless steel pipe are two kinds of steel pipes. The surface of galvanized welded steel pipe is galvanized, and it may be welded pipe or seamless pipe. Seamless steel pipe refers to the manufacturing process. Seamless galvanized pipe is corrosion-resistant and seamless. Steel pipes can withstand higher pressures. Galvanized welded steel pipe is not easy to rust due to the protection of zinc. Galvanized welded steel pipe is better than seamless steel pipe. If it is used for balcony, it is better to use galvanized light pipe. Galvanized seamless steel pipe is not suitable for using balcony on it. , Natural weight is heavy, and the cost of galvanized seamless steel pipe is higher than that of galvanized welded steel pipe, and galvanized welded steel pipe is very durable, and its service life is far more than that of galvanized seamless steel pipe.

Types of Galvanized Seamless Steel Pipe:

Seamless galvanized steel pipes are divided into the following varieties due to their different uses:

1. GB/T8162-1999 (seamless galvanised steel pipe for structure). Mainly used for general structure and mechanical structure. Its representative materials (grades): carbon steel 20, 45 steel; alloy steel Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo, etc.

2. GB/T8163-1999 (seamless galvanized steel pipe for fluid transportation). Mainly used for engineering and large equipment transport fluid pipeline. The representative material (grade) is 20, Q345 and so on.

3. GB3087-1999 (seamless galvanized steel pipes for low and medium pressure boilers). Mainly used in industrial boilers and domestic boilers to convey low and medium pressure fluid pipelines. The representative material is 10 and 20 steel.

4. GB5310-1995 (seamless galvanized steel pipes for high pressure boilers). Mainly used for high temperature and high pressure transport fluid headers and pipelines in power stations and nuclear power plants. Representative materials are 20G, 12Cr1MoVG, 15CrMoG and so on.

5. GB5312-1999 (Marine carbon steel and carbon-manganese steel seamless steel pipe). Mainly used for I, II pressure pipes of marine boilers and superheaters. The representative materials are 360, 410, 460 steel and so on.

Applications of Seamless Steel Pipe:

Seamless steel pipes can be divided into two types, one is seamless round pipes and the other is seamless square pipes. Seamless round pipes are the most important uses in the pipeline and machinery industry, such as oil pipelines and natural gas pipelines, as well as natural Gas pipelines, etc.; there is also the machinery industry, cars are made of half shafts, seamless steel, and the steel frame of bicycles, which can also be used as materials for making boilers. Seamless pipes are mainly used in the construction industry.

The seamless steel pipe needs to be treated with anti-rust paint before the pipeline, and the seamless square pipe is made of galvanized first. The galvanizing method is mainly divided into two methods: hot-dip galvanizing and hot-dip galvanizing. Seamless square pipes are generally hot-dip galvanized galvanized because hot-dip galvanized seamless pipes are much stronger than galvanized seamless pipes. Because the main use of seamless square pipes is for building steel structures, color steel houses, etc., it is inevitable that Affected by wind and rain, it may rust and rot over time. So it is necessary to put the whole protective film on the outside, but the paint looks too ugly and can't help being exposed to the sun, so someone came up with a method of galvanizing. Sure enough, galvanized seamless square pipe has been greatly welcomed.

The seamless square tube is also used as a motorcycle frame, an electric vehicle main frame, etc. It can also be used as pipeline transmission wire and so on. There are many styles and specifications of seamless steel pipes, each with its own merits. In recent years, my country's oil pipeline industry and steel structure construction industry have developed very rapidly, which has also led to the development of seamless steel pipes. Based on this development, we will become the world's largest producer of seamless steel pipes. The country with the largest steel pipe.

Conclusion:

Galvanized seamless steel pipe has excellent corrosion resistance due to its galvanized coating. By reacting the molten metal with the substrate to form an alloy layer, this product provides a strong bond between the coating and the substrate, and the coating thickness is also uniform. Seamless steel pipe is made from a solid circular cylinder called a billet, which is heated and pushed onto a mold that pushes the center of the pipe out to form a hollow cylinder. This type of pipe also has a higher tensile strength due to the absence of weld creases.