People who have already worked in the seamless tube industry making or are still working in this sector must be familiar with the crude rolling mill technology frequently used in the nineteenth century.
This was the method used to create seamless pipes and tubes for industrial usage. The entire technique took a long time. All these methods have altered due to technical advances and improvements.
Several novel processes have emerged that make the whole, seamless tube production process cost-effective and straightforward.
Manufacturing of seamless tubes
- Preparation of stainless-steel sheets
Before the sheets are picked up, they are subjected to inspections. The first stage of the preparation process includes trimming the borders. The seamless pipe heat exchanger is also used to heat the tubes.
- It goes through the rollers
After the inspection process, the sheets are then pushed through rollers to get the desired size. You will notice that the sheets are being evolved into tubular shapes in this particular step.
- A welding machine drives rollers
The tubular shape must go via suitable welding equipment in this stage. Finally, the weld beads are removed from the tubular shapes, resulting in precisely rolled tubes.
Cleaning and the seamless rolling tubes with the help of a seamless pipe heat exchanger
After the rolling process, the tubes are cleaned and heated using aseamless pipe heat exchanger. This particular step is taken when demanded by the client. Before starting the process, the workers make sure to clean the stainless-steel tubes thoroughly.
In addition, they ensure to remove all the leftover dirt. After cleaning, they use heating the stainless-steel tubes to eliminate any stress from the tubes.
In this way, the shape of the tubes is maintained. Next, a heated furnace with temperature controllers is used to roll out the tubular body. The heating procedure aids in the strengthening and opening of the tubes for pickling, as well as eliminating scales from the surface.
The technique of cold-drawing of steel bars and rods
Many customers have unique requirements that are not compatible with seamless tubes rolled straight from the mills. Hence, the procedure of cold-drawing is required to obtain the appropriate size of steel bars and rods.
The seamless tube is then coated with soap and oxalic solution before cold-drawn. The soap is served as a lubricant because the solution assists in minimizing the friction created by the process. Finally, the die plugs are used. It is utilized to bench down the seamless tubes.
The finishing touches of steel bars and rods
Last but not least, inkjets labeling on seamless tubes inform exporters about the condition of the tubes, like their grades, material, size, and heat number.
It also shows the third-party stamps. Following that, additional rigorous quality tests and proper packaging are performed, ensuring that these steel bars and rods are good for the shipment.
Many industries require seamless tubes with varying tensile strengths made of various alloys. As a result, the seamless alloy tubes are manufactured by a large number of companies.
It is demanded by many industries, that is why made in good quantity. The carbon steel seamless tubes are most commonly used by people.
