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Shijiazhuang Faith Machinery Co., Ltd. manufactures quality ERW tube mills that are designed to deliver reliable and efficient production of welded steel tubes for a broad range of industrial uses. The emphasis is on creating a robust and well-integrated system that balances performance, durability, and operational simplicity.
A quality ERW tube mill encompasses a complete production line, starting with a dependable uncoiling and feeding system that ensures a consistent material flow into the forming section. The forming process is engineered to gradually shape the flat steel strip into a cylindrical profile with minimal strain on the material. This is achieved through a calculated sequence of roll stands, each contributing to the progressive formation of the tube. The design of the roll profiles is critical to avoid surface marring and to manage the material's springback effectively.
The welding system is a key component that defines the mill's capability. Utilizing a high-frequency (HF) induction or contact welding method, it generates the necessary heat to forge the edges of the steel strip together. The reliability of the weld is supported by consistent pressure from the squeeze rolls and a stable electrical output from the welder. Post-weld treatment, including the removal of internal and external flash, is standard to produce a smooth weld seam suitable for many applications.
The sizing section plays a vital role in finalizing the tube's dimensional characteristics. Through a series of calibrated stands, the tube is brought to its final specified outer diameter and improved roundness. A flying cutoff saw, synchronized with the tube's linear speed, then cuts it to the required length. The entire process is managed through a centralized control system, typically a Programmable Logic Controller (PLC), which allows operators to monitor key parameters such as line speed and welding temperature.
These mills from Shijiazhuang Faith Machinery are built to produce tubes that conform to common industrial standards, such as ASTM A500 or ASTM A513. They are suited for manufacturing tubing used in structural frameworks, furniture, and general-purpose fluid conveyance. The focus is on providing a machine that offers a solid return on investment through consistent uptime, straightforward maintenance, and the production of tubes that meet the practical requirements of the market.
