1.The role of the spiral accumulator: Spiral accumulator is the main assist equipment in the welded pipe product line.Spiral accumulator plays storing material and feeding role in the high-frequency welded equipment. cold rolling and picking line.It is a necessary equipment that to ensure continuous production.After the strip completed for changing volume,croping,butt welding,it filling material to the accumulator.During the production process,the strip into the accumulator intermittent,and the accumulator filling material to the welded pipe mill or rolling machine.The accumulator can guarantee the material continuously filling to welded pipe mill or rolling machine.It can prevent the abrasion between the strip to improve the producer's labor rate and the pass rate. 2.The process flow: Moving coil-setting coil-uncoiling-shearing-butt welding-horizontallyguiding-feeding- storing-discharging(electric control system and hydraulic system) 3.The descripation of 4.0M spiral accumulator: Accumulator section includes: (1).Adjustable overturn bracket:support the strip auxiliary,the overturn angle can be adjusted with the strip. (2).Flatten&feeding machine:two-axis pinch-type,with apneumatic brake (3).Accumulator:diameter:4.0M,can carry about 8T,for bandwidth250mm,speed160m/min (4). High overturn bracket:support the strip auxiliary (5).Electrical control box:Three-phase four-wire 4.The type of the spiral accumulator: No. Diameter(m)Length×width(m)Bandwidth(mm)Thickness(mm)1&2.513×2.535 1500.5 2.02&3.513×3.550 2500.5 2.03&4.013.5×480 4000.75 2.54&4.214×4.280 4001.0 3.05&4.515×4.5150 4501.5 3.56&4.817×4.8150 5502.0 4.07&5.0200 6002.5 4.58&5.522×5.5300 8002.5 5.09&6.023×6350 8003.0 5.510&8.045×8≤1050≤811&1050×10≤1100≤1012&1258×12≤1200≤1213&1670×16≤1500≤16 .The specification of the spiral accumulator can be designed according to the customers' demand.