20 ton overhead crane, single girder or double girder bridge crane with low operational cost. A full range of overhead crane 20 ton are here. AQ-LH double girder 20 ton bridge crane for sale parameters. Lifting capacity: 5-50t; Span length: 10.5~31.5m 20 ton bridge crane from us is an electric overhead travelling crane.QD Double Girder Overhead Crane Components mainly consists of bridge, trolley travelling mechanism, crab and electrical appliances, and it is divided into 2 working grades of A5 and A6 according to the frequency. 10T, 16/3.2T, 20/5T, 32/5T, 50/10T, 75/20T, 100/20T, 100/30T, 125/30T, 150/30T, 160/32T, 200 The Double Girder Crane span of Double Girder Electric Overhead Travelling Crane Parameters. 10t, 5 / 3.2t, 10 / 3.2t, 20 / 5t, 32 / 5t, 50 / 10t.(Additional capacities are also available.) Working Span: 10.5m, 13.5m, 16.5m, 19.5m, 22.5m, 25.5m, 28.5m, 31.5m eight specifications. (Additional spans are also available.) Working Class of Double Girder EOT Crane 75 ton Popular Products of A3-A4 Anti Explosion Double Girder Overhead Crane 10 Ton EOT Crane 15M Span by Double Girder Overhead Crane - Xi. from China. Signup. Login. Anti Explosion Double Girder Overhead Crane 10t For Workshops With Flammable And Explosive Mixtures.