Welded Steel Pipe Production: Welding Pressure
Date:2017-06-14 View(s):584 Tag:welded steel pipe, welding pressure
Welding pressure in the production of welded steel pipe is also the main parameter of high frequency welding. Theoretical calculation that the welding pressure should be 100 ~ 300MPa, but the actual production of the real pressure in this area is difficult to measure. Are generally based on experience estimates, converted into the edge of the pipe extrusion. Different wall thickness to take a different amount of extrusion, usually 2mm below the extrusion volume: 3 ~ 6 mm when the 0.5t ~ t; 6 ~ 10 mm when the 0.5t; 10 mm above the 0.3t ~ 0.5t The API steel pipe production, often appear in the weld gray spots defects, gray spot defects are refractory oxide, in order to achieve the purpose of eliminating gray spots, Prime Steel Pipe and other manufacturers to take more pressure to increase the welding margin, 6mm above the steel pipe extrusion allowance of 0.8 to 1.0 of the material thickness, the effect is very good.