... Best solutions. QD type double beam overhead mobile crane1.IntroductionThis crane mainly consists of strong bridge beams,trolley-travelling mechanism,crab ... control3.Design and construction rulesAll the standards required for the crane is according to China Standards.4.PaintingPrimer and finishing ... capacity 5tons,10tons,16/3.2tons,20/5tons,32/5tons,50/10tons,75/20tons,100/20tons,100/30tons,125/30tons, ...