Straight seam steel pipe with high-frequency straight seam steel pipe industry name differences
Straight seam steel pipe only one longitudinal seam welded steel tubes, under GB/9711.1 diameter greater than the 914.4 straight seam steel pipe can have two straight welds and welded angle of 180 degrees. Welding quality requirements in the same technical parameters of straight seam steel pipe welds.
Production areas are divided into: ERW high-frequency straight seam steel pipe, JCOE straight seam steel pipe, roll straight seam steel pipe. Straight seam steel pipe is, submerged arc straight seam, high-frequency straight seam welded longitudinal seam, pipeline straight seam production products in General. High-frequency straight seam steel pipe with high frequency current skin effect on the plates produces high temperature for a short time and forces squeezed on both ends to melt together, is a real electrode base material-free docking. ERW high-frequency longitudinal welded steel pipes for hot-rolled coil used as raw materials, uniform wall thickness can be controlled within ± 0.2mm, both ends of the pipe by United States APl or GB/T9711.1 standards, end bevel, fixed length delivery and so on. In recent years, the natural gas pipeline project and the gas company has a wide range of ERW steel pipe as the main sewer pipe. World pipe using the ERW high-frequency straight seam steel pipe accounting for 60%.
Straight seam steel pipe produced in Hebei JCOE usually double submerged arc straight seam steel pipe, by JCOE cold forming process, welding using flux-cored wire, and also with the particle flux for submerged arc and therefore became known as submerged arc straight seam steel pipe. Straight seam submerged arc-welded steel tubes are mainly production flexible and able to produce 325mm-1420mm in the middle of arbitrary size and wall thickness. Great satisfaction on pipe size standards used around the world, and in the production of high-frequency straight seam steel pipe is usually common specifications.
High-frequency straight seam steel pipe in Hebei is often known as the original tubes industry distinguish themselves from straight seam submerged arc welded steel pipe, or thermal expansion of high-frequency straight seam steel pipe name confusion. Source: http://www.steel-tubes.com/
