High-Frequency Welded Plant (HFW) is an efficient pipe welding technology that uses the skin effect and proximity effect of high-frequency current to rapidly heat the edges of steel strip and achieve metallurgical bonding under pressure. It is the mainstream technology for welded pipe production worldwide.
I. Core Principle & Process
Welding Principle
Typical Process Flow
Uncoiling → Leveling → Shearing and Butt Welding
Forming (gradual pipe bending)
High-frequency induction welding (core process)
Sizing → Straightening → Online inspection
Cutting → Finishing → Warehousing
