The Production Process of Stainless Steel Pipes in Our Factory:
Stainless steel pipes are manufactured through a carefully controlled and multi-step process to ensure high quality, durability, and compliance with industry standards. Here is an overview of the key stages involved in our production line.
Rolling and Welding
The process begins with stainless steel strips that have undergone thorough quality checks and trimming. These strips are then sent to the pipe factory where they are rolled into the desired shape using a series of rollers. As the strip moves through the tube mill, it gradually forms into a tubular shape. The edges of the strip are then joined together using TIG (Tungsten Inert Gas) welding, a precise method that ensures strong and clean welds. After welding, any excess material or internal weld beads are removed using a Tibo machine, resulting in a smooth and uniform rolled tubing.
Cleaning and Heat Treatment
Once the tubes are formed, they are cut to the required lengths based on customer specifications. Before proceeding further, the tubes undergo a cleaning process to remove any dirt, oils, or impurities that may have accumulated during rolling. Following this, the pipes go through a heat treatment phase in a continuous rolling hearth furnace. This step helps relieve internal stresses caused by the forming and welding processes. The furnace is equipped with temperature controllers and recorders to maintain consistent conditions throughout the process. After heat treatment, the pipes are straightened and pickled to eliminate scale and improve surface finish.
Cold Drawing Process
If the final dimensions cannot be achieved directly from the rolling process, cold drawing is used to refine the size and improve the mechanical properties of the pipe. During this stage, a lubricant made from oxalic acid and soap is applied to the surface of the pipe to reduce friction. A die plug is then used to pull the tube through the die, shaping it to the exact specifications required. This process enhances the strength and dimensional accuracy of the finished product.
Finishing and Quality Control
After cold drawing, the pipes are cleaned again to ensure they are free from contaminants. They are then heat treated, pickled, and straightened once more to achieve the desired surface quality. A computerized inkjet marking machine is used to label each pipe with essential information such as material grade, size, furnace number, and third-party inspection stamps. Once marked, the pipes are inspected for quality, tested for dimensional accuracy, and then packaged for shipment. These stainless steel pipes are widely used across various industries, including construction, automotive, chemical, and food processing, due to their corrosion resistance and structural integrity.
In summary, the manufacturing of stainless steel pipes involves a series of precise and controlled steps, from initial rolling and welding to final finishing and quality checks. Each stage plays a crucial role in ensuring that the end product meets the highest standards of performance and reliability.
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