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Roller Hearth Furnace for Steel Pipe Intermediate Annealing Optimizes Cold Drawing Process Chain
Aug 22nd,2026
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Roller hearth continuous furnaces dedicated to steel pipe intermediate annealing become critical thermal processing equipment for seamless and welded tube plants, helping pipe makers stabilize material performance between multi-pass cold drawing operations.
Intermediate annealing is an essential step after cold deformation of steel tubes, used to relieve work hardening and recover plasticity for subsequent drawing. The roller hearth furnace transports steel pipes through preheating, soaking and controlled cooling zones by rotary rollers. It achieves uniform heating along the full length of tubes and avoids surface scratches or deformation often seen in other continuous furnaces.
This type of roller hearth furnace supports flexible thermal cycles, including stress relief, recrystallization annealing and normalizing. Equipped with high-precision burner or electric heating modules, the temperature uniformity can be controlled within ±5℃. Modular furnace structure simplifies installation and maintenance, and the automatic feeding & discharging system reduces manual intervention. The system can handle various tube diameters and lengths, with high hourly throughput suitable for large-scale pipe workshops.
Steel pipe manufacturers in Europe and Southeast Asia are actively renovating old roller hearth annealing lines, focusing on energy-saving combustion systems and Industry 4.0 data collection modules. Compared with traditional batch furnaces, continuous roller hearth intermediate annealing lines improve production capacity while cutting unit gas consumption. As global pipe factories pursue stable mechanical properties and lower scrap rates in cold drawing production, demand for customized roller hearth furnace solutions will maintain steady growth.
