Equipment length: 2m, 3m, 4m diameter equipment: φ150mm, φ175mm, φ200mm (other specifications to be customized). Outer tube material: imported PVC wire duct, anti-corrosion, acid, temperature 1400C. Frame material: In addition to spring spring galvanized steel, other metal components and fasteners are made of 304 # stainless steel. Hood: stainless steel, 360 degree can hover with the mouthpiece air flow control valve. Light weight, high strength, with a booster device and effortless operation, hover freely. Be adjusted up and down around good catch results. Suction arm is widely used in metal machining, welding fumes, grinding the workpiece, thermal processing of oil mist treatment, odor removal, dust removal and other industries. Compared with the fixed piping systems, flexible suction arm with unparalleled performance advantages, can adapt to all kinds can not install the suction line of complex conditions, can be arbitrarily placed in the best position complement to effectively complement Set welding fumes, which is connected joints and rotating connector hood fixed base so that the dust, smoke and exhaust from the worker's breathing zone