The ERW steel pipe/tube production line is the world's first non-destructive testing technology, with advanced forming technology, high-power welding, full-featured, double-weld heat treatment and full-tube heat treatment equipment, as well as a computerized logistics tracking system throughout the process. The integrated medium diameter straight seam welded pipe production equipment is one of the most advanced welded pipe production lines in the world. The main equipment is provided by the world's most advanced straight seam welded pipe equipment manufacturers such as German SMS and MEER, with an annual output of 300,000 tons of line pipes. Straight seam welded pipe products such as erw casing, structural pipe (round pipe, rectangular pipe).
ERW pipe mill work flow:
Uncoiling → shearing and end welding → material cage → forming → welding → cleaning → cooling → sizing → flying saw cutting → run out table → pipe collecting → packing
Raw material characteristics:·Pure steel, stable chemical composition, stable performance of steel grade;
Online detection technology:·Ultrasonic board detection: detect layered defects and longitudinal long defects, and configure defect tracking paint spraying device to ensure 100% detection, tracking and removal of sheet defects.
Converter steelmaking → out-of-furnace refining → continuous casting → hot rolling → uncoiling → strip steel flattening → head cutting → butt welding → spiral strip looper → edge washing → strip ultrasonic inspection → forming → high frequency welding → online welding Ultrasonic flaw detection → online weld heat treatment → air cooling, water cooling → sizing → flying saw segmentation (flattening test) → pipe end chamfering → hydraulic test → weld ultrasonic flaw detection → pipe end flaw detection → appearance size inspection → length measurement Heavy → marking → coating → packaging → leaving factory
ERW steel pipe is a kind of induction welding. It does not require welding seam filler, no welding spatter, narrow welding heat affected zone, beautiful welding shape, and good welding mechanical properties. Therefore, it is widely used in the production of steel pipes.
Tips: ERW welded pipe is formed by rolling strip and welding the seam, with tighter dimensional tolerances and less weight. The weld seam is heat treated after welding that no untempered martensite remains, and the weld flash can be removed from both inner and outer surfaces. ASTM A53 ERW steel pipe is a typical carbon steel pipe. It is largely used to convey fluids at low / medium pressures such as oil, gas, steam, water, air and also for mechanical applications.