... adopt international U-steel welding, surface treatment for anti-rust paint, shelf welding size precision, belt wheel, bearing ... 45# stainless steel and inner hexagon screw, adopted anti-rust screws have no influence about the finished products. ... whole machine electroplated well and has a good anti-rust properties.TypeQX-5FProducing speed1000pieces/minSupply power380VSupply frequency50HzTotal power3 ...