Supply & Demand

The front swing spiral welded pipe mill is to open and level the steel coil through the mill equipment, and then feed it into the forming machine at some angles. By using the principle of three-roller winding machine and some angles, a continuous round pipe is formed, and the continuous spiral weld is welded by submerged arc welding machine. When the steel coil is coiled, uncoiled, levelled and subject to shearing butt welding, the main machine should stop for waiting, and after the butt welding of the steel coil is completed, the main machine should start for production. The front swing spiral welded pipe mill adopts intermittent production mode, which has the advantages of less investment and simple operation

ERW mill without roller changing is a new product developed by us. When changing product specifications, all parts of the molding machine do not need to change rollers, and in the past, the precision molding machine stand that requires to change rollers does not need to change rolls on the mill, which can save a lot of roller investment and is especially suitable for large- and medium-sized mills. When changing product specifications, the adjustment of roller is also automated. Only by inputting parameters such as pipe diameter, wall thickness and material on the industrial computer, all rollers will be automatically adjusted to the appropriate position, and the feeding production will be started directly. Thus, a lot of adjustment time is saved when changing models, which makes multi-variety and small batch order production possible, increases the operation rate of the mill, and improves the startup rate of the mill.

Process flow of finished steel pipes: Steel Billet → Cut To Length → Walk Beam Furnace Heating→ Piercing→ A-R Tube Rolling → Induction Heating → High-Pressure Water Descaling→ Tension Reduction → Cooling Bed → Cut To Length → Straightening →Hydro Testing → Ut → Eddy Current Flaw Detection → Chamfering→ Marking → Manual Inspection→ Automatic Packaging.