Double girder overhead cranes 5t–550t by Tongyu / Henan Lugang: Q345-B girder, ZG50SiMn forged wheels, 100% weld inspection, for heavy workshops, foundries and hydropower houses.
| Capacity | 5t – 550t |
| Span | 10m – 40m |
| Duty group | A3 – A7 |
| Girder | Q345-B, box welded |
| Wheels | ZG50SiMn integral forged |
| Weld | 100% NDT inspection |
| Control | VFD / cabin / remote |
Henan Lugang Crane Group, founded 2007 in Changyuan — China's crane hub — is a Grade-A manufacturer (ISO9001/14001/45001, ~45% domestic share, 60+ patents). Tongyu is its professional sales & selection partner: we confirm capacity, span, lift height, site and power before recommending, so you never over- or under-buy, and we coordinate logistics, installation and after-sales. Standard models ship in 15–25 days; spare parts and 1h-response service back every order.
Double girder for capacities above ~32t, long spans, high duty or where headroom/speed matter.
Q345-B main girder with ZG50SiMn forged wheels and 100% weld inspection for rigidity and anti-rail-gnawing.
Standard models 15–25 days; custom heavy duties quoted per scheme.