Fengmai Company sells stainless steel welded pipe industrial pressure pipelines with full specifications, including national and non-standard stainless steel welded pipe specifications, customized pipe diameters of 6-3500mm, and a stock of over 6000 tons. The production is fast, the delivery time is accurate, and materials can be processed. Fengmai Company has been focusing on the stainless steel pipe industry for 15 years. Your professional consultant for stainless steel seamless pipes is looking forward to cooperation!
Production process:
Fengmai stainless steel welded pipe, also known as welded steel pipe, is made by welding steel plates or strip steel after curling and forming. The production process of this type of steel pipe is relatively simple, with high production efficiency, diverse varieties and specifications, and less equipment investment. However, its strength is generally lower than that of seamless steel pipes. Welded pipes include ERW (resistance welded pipe), which is a type of steel pipe made through specific welding processes such as spot welding and seam welding, commonly used to manufacture circular, square, and rectangular stainless steel pipes.
DOM (Draw Over Mandrel) pipe, although technically not a steel pipe but a stainless steel pipe, undergoes a cold stretching process during production, which provides better dimensional tolerances, improved surface smoothness, and the strongest achievable welding strength. The manufacturing process of DOM tubes includes removing the entire flash weld during the finishing stage and cold drawing the tube onto the mandrel. This process often leads to DOM pipes being mistakenly referred to as' seamless', even though they actually have a seam (although almost invisible).
Performance characteristics of Fengmai stainless steel welded pipe:
Welded pipes, due to their simplified production process, typically have lower strength and are suitable for applications that do not require particularly high strength.
DOM tubes, due to their cold stretching process, have better dimensional tolerances, surface smoothness, and strength, and are typically used in applications that require higher quality and performance requirements.
In summary, the main difference between DOM pipes and welded pipes lies in their different production processes and the resulting different performance characteristics. DOM pipes provide better dimensional tolerances and surface smoothness through the cold stretching process, while welded pipes meet a wide range of application needs with their simple and efficient production process and lower cost.
DOM
Technically, DOM is not a steel pipe, but a process of completing stainless steel pipes. It is considered a high-quality pipe. The first stage of manufacturing is the same as the stage used to manufacture resistance welded pipes, but in the finishing stage, the entire flash welding is removed and the pipe is cold drawn onto the mandrel. The cold stretching process provides better dimensional tolerances, improved surface smoothness, and the strongest achievable welding strength for the tube. When DOM actually has a seam (although almost invisible), DOM is often mistakenly referred to as "seamless steel pipe".
