Khadka wax soo saarka ee birta welded ee aadka u sarreeya ee φ8 ~ φ610 mm iyo dhumucda derbiga 0.5 ~ 20mm iyo sidoo kale wax soo saarka labajibbaaran, leydi, iyo muuqaal kale oo caado ah oo tubooyinka birta ah, tuubooyinka birta ee Carbon , ERW Tube steel.Khadku wuxuu soo saari karaa tuubooyinka alxanka leh oo leh mashiin tayo wanaagsan leh iyo saxsanaan sare oo isku-dubbarid xawaare sare leh.