Bodentürschließer

floor spring1. Applicable door size reaches1200mm×2300mm×12mm2. Highest door weigh reaches 130-150kg3. Double speed buffer closing design, and contain ultra low temperature anti-frozen oil, make sure that the speed of closing door won't be influenced during 40 degrees below zero.4. Adjustable length reaches 4mm and width reaches 4mm in the cement box, it can also adjust ±2°lengthways when calibrating the zero position 5.The maximum angle that opens from a single direction is 106°the closing geffect is available from 80°6. Meet the China State QB/T3884-1999 standard, and make sure the usagetimes will be more than 300,000 times.