2023년 6월 14일부터 16일까지 열리는 Tube Fair에 오신 것을 환영합니다. 그곳에서 만날 수 있기를 바랍니다. 부스 번호는 W4E08이라는 점을 기억하세요.

1월 . 16, 2024 15:04 다시 목록으로

Seamless Mechanical Tube-Stainless steel pipe

Breaking Down Common Steel Tube Processes and Finishes- steel tubes

Electric Resistance Welded

Abbreviated ERW, this is a format that signals a specific welding process – actually two processes, spot and seam welding. This process involves several specific steps where the steel is unwound and trimmed, then passed through rollers to cold-form the steel into the proper shape (circular, square or rectangular).

From here, the edges are forced together into a butt joint, then welded at a very high temperature to form a flash weld. Once the weld is tested, the tube passes through various sizing rolls to achieve the proper size, and then the length is cut. The materials used here will generally be available in both hot-rolled and cold-rolled formats.

 

API 5L 라인 파이프 원활한 강관

high quality square erw steel pipe exporter

 

Seamless Mechanical Tube

When dealing with seamless mechanical tubing – the type that, as the name suggests, comes with no welded seams – the term to remember is “extrusion.” This is a process where steel bar is pierced in the middle using a die, turning what was previously a solid round bar into a round tube instead. There are two types of seamless tube to consider:

  • Hot-finished seamless (HFS): Comes with lower critical tolerances and not as much strength as its alternative, HFS formats are best when cost is an issue and a wide size range is needed.
  • Cold drawn seamless (CDS): With extremely precise tolerances and a good finish, this is generally the preferred method for dimensional tolerances and machinability.

Drawn Over Mandrel

Abbreviated DOM, this isn’t actually a steel tube type or manufacturing format – it describes the finishing process often used. Many of the early parts of the process are identical to ERW format, with differences showing up in the finishing stages when the flash weld is removed. In these cases, the tube will be cold drawn over a mandrel, bringing excellent dimensional tolerance and surface finish. Another major benefit of DOM materials is that they boast the strongest weld strength you can find. DOM products do have a seam, despite them sometimes mistakenly being labeled as seamless tube.

For more on the various processes and finishing formats used on steel tube, or to learn about our steel pipe, bar or any of our other steel services, contact the pros at Wasatch Steel today.

공유하다
공유하다

당사 제품에 관심이 있으시면 여기에 귀하의 정보를 남겨주시면 곧 연락드리겠습니다.


ko_KRKorean