Seamless steel tube production process key notes

　　Notes of Seamless Steel Pipe Production Process Equipment Points

　　1. Oiled marking: steel pipe hydrostatic testing machine after passing were oiled to prevent corrosion, and according to user requirements for marking.

　　2. Leveling milling: the flat steel anvil machine so that the original curl, and then through the edge milling machine for two-sided steel milling, so as to meet the requirements of the plate width, plate edge parallelism and groove shape.

　　3. Shear molding: the steel plate production line along the outer edge of the spiral curl into a tube.

　　4. Butt cut: seamless steel pipe market equipment using advanced technology pre double submerged arc welding, internal welding, outside welding. The welded steel pipe using a plasma-foot cut to specification length.

　　5. Visual inspection: by professional and technical personnel to some of the basic parameters to be checked.

　　6. The ultrasonic flaw detection: scrap development of the inner and outer sides of the base metal and weld seam 100% inspection.

　　7. X-ray detection: internal and external welds 100% X-ray industrial TV check image processing system to ensure that the use of detection sensitivity.

　　8. The pressure test: the steel pipe hydrostatic testing machine shall be tested individually to ensure that the test pressure pipe meet the required standards.

　　9. Chamfering flat head: seamless steel pipe inspection devices will be qualified after the pipe end processing, to meet the requirements of the pipe end (spiral welded pipe mill) groove dimensions.

　　10. Final inspection: leveler again ultrasound and X-ray detection as well as magnetic particle inspection pipe end, check if there are problems and welding pipe ends defects.

　　11. Unwinding board probe: After entering the unwinding plate production line, the first full-board ultrasonic testing.

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