straightener RSTL medium sized_decoiler_with_constant_speed_drive Handlingsysteme high_lift_trucks_for_coil_transport_with_carrying_bolt_and_change_prism coil transport truck with prism pedestrian tug units PTT3 ultra_compact_lines_for_coil_feeding flatbed_truck hydraulic_gripper_feeds gripper feed Schwerlasthandling conventional coil processing line