How Are Seamless Pipes Manufactured? Seamless pipes are made of solid steel, which comes in sheet or bar form and is formed into a solid round shape known as "billets," then heated and cast into a piercing rod to make it a hollow tube, and this is how pipe manufacturers make pipes. Electric resistance weld (ERW) is also called welded pipe. It is the most common specification for welded carbon steel pipe. But the process of making a seamless pipe doesn’t require welding. The most common specification for seamless carbon steel pipe is A106B. Seamless pipes are basically divided into two types: round and special-shaped. They are mainly used as petroleum geological drilling pipes and cracking pipes for the petrochemical industry. Seamless Pipe Manufacturing Process: 1. 2. 3. 4.
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Before being picked to roll, this stainless steel undergoes several checks. The first step is to trim them around the edges. Then it is passed through many rollers to match the required size. In this step, the sheets progress into tubular shapes. The steel sheet is then fed through a fitted welding machine.The inside of these tubular shapes, the weld beads, and scraps are removed, thus giving perfectly rolled tubes. After getting the basic rolled structure, pipe manufacturers make sure it goes through the process of cleaning and heating. Cleaning is done before heating so that the dust is removed. And then heat is used to remove any possible stress on the seamless tubes to give them a seamless shape. The heating process helps the tubes to be straightened and open to pickling and removing the scales from their surface. Then the final touch includes ink jet marking on the seamless tubes to educate the exporters about the tube’s grade, material, number, heat, size, and third-party stamp.
Use of seamless pipe: ● ● ● ●
Seamless pipes are generally made by rolling ordinary carbon structural steel or lowalloy structural steel with the largest output. They are mainly used as pipelines or structural parts for conveying fluids. Seamless pipes are also used for chemical and electric power and boilers. They are also used for geology and petroleum.
Advantage of the seamless steel: ●
As seamless pipes have the advantage of having no seams, there is no chance of a weak seam. It means that a seamless pipe can take 20% more working pressure than others.
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Seamless pipe has the highest resistance to corrosion as there is less opportunity for things like impurities and defects. Seamless pipes don’t require testing, so they go without it.
Conclusion: Seamless pipes can be manufactured using various methods, which are dependent on the diameter required, or the ratio of the diameter to the thickness of the wall. Seamless pipe manufacture is regularly used in the transportation of fluids like water, natural gas, air, and waste. It is also required in high-corrosive environments such as oil and gas, power generation, and many high-pressure environments. Seamless pipes are the best option for pipes because they have so many advantages. Industries like Saba Steel Industry provide the best quality steel in Nigeria. It is very important that the quality of the steel pipes be good so that they can be used for a long time.