Dual 30 t hooks let the crane lift long steel members with two lifting points. This is important for steel structures such as beams, columns, and trusses, which can be long and flexible. Lifting with two points gives better load stability, reduces the risk of bending or twisting, and allows the operator to tilt and position the load more precisely. The two hooks are spaced 3,600 mm apart (reference) on the trolley, which matches the typical length of steel members handled in the yard. The crane can also use just one hook for smaller or irregular loads.

NR electric hoist is a type of wire rope electric hoist used on overhead and gantry cranes. The "NR" designation refers to the hoist series and its design features, which typically include a compact frame, a two-speed lifting motor, a built-in travel mechanism, and a wire rope drum. On this semi-gantry crane, the NR hoist is mounted on the trolley and drives the dual 30 t hooks. Lifting speed is 0.8 / 3.3 m/min (two-speed), which gives the operator a slow speed for precise positioning of heavy steel structures and a faster speed for normal lifting.

Pendant control lets the operator work from the floor near the load, which is useful for precise positioning of steel members. Remote control lets the operator step back to a safe distance and get a better view of the whole load, which is important when handling large steel structures that may be several meters long. Having both modes gives the operator flexibility to choose the safest and most convenient control method for each lift. In an outdoor steel yard, this flexibility is important because the load and the surroundings can change from lift to lift.

BMGO = double girder semi-gantry crane. "30t+30t" = dual 30 t hooks (the crane can lift 30 t on each hook, or 60 t total with both hooks in a synchronized lift). "22m" = 22 m span. "17m" = 17 m lifting height. "A5" = ISO A5 duty class (M5). A5 is a light to medium duty class, suitable for outdoor steel structure handling where the crane is working regularly but not continuously at full load.

This crane uses square bar 50×50 on the upper travel beam side and P43 rail (recommended) on the ground leg side. Square bar 50×50 is a heavier version of the square bar rail, suitable for the higher wheel loads of this crane (235.5 kN max). P43 is a standard crane rail profile that handles higher wheel loads and gives better running performance. The combination is chosen to match the wheel loads and the existing structure on each side of the crane. For outdoor use, both rails should be installed with proper drainage and corrosion protection.

The 17 m lifting height and 22 m span give the crane good coverage of an outdoor steel fabrication yard. Steel structures are often tall — columns, trusses, and frames can be several meters high — so a 17 m lifting height lets the crane lift them clear of the ground and over storage racks. The 22 m span covers a wide yard, so the crane can reach most storage positions without moving the load. The combination of height and span makes the crane suitable for handling large steel structures in a typical fabrication or storage yard.

This crane runs on 3-phase, 380 V, 50 Hz. This covers the dual lifting motors (5.0 / 20 kW + 5.0 / 20 kW), the trolley travel motors (2 × 1.5 kW + 2 × 1.5 kW), the long travel motors (4 × 3.0 kW), and the control system. If your site uses a different voltage or frequency, Yuantai can supply the crane with a custom power supply to match your local grid.