KS straight arm series truck-mounted cranes have the lifting capacities of 3.2 tons, 5 tons, 6.3 tons, 8 tons, 10 tons, 13 tons, 14 tons, 15 tons, 16 tons and 17 tons. It is a truck-mounted crane produced by referring to the advanced domestic and overseas technologies. The front and rear outriggers of the whole product are H-shaped and feature large span and good stability. The boom of the small tonnage crane is hexagonal with three sections or four sections. The boom of the large tonnage crane is hexagonal with four sections, five sections or six sections. The six-section arm is a three-stage hydraulic cylinder telescopic boom, of which three sections are telescopic in sequence, four, five and six sections are telescopic synchronously, which features high strength, small cross-section, convenient telescopic, large operating height, etc. The lifting mechanism adopts gear reducer and hydraulic control brake. The whole product features beautiful appearance and can be easily installed on various high and medium-duty trucks. All the accessories are purchased from well-known enterprises at home and abroad. 
The truck-mounted crane has complete safety devices with eye-catching load signs on both sides of the boom to clearly indicate the rated lifting capacity under the arm length of the range. The telescopic cylinder and derricking cylinder are equipped with balance valves, and the outrigger cylinder is equipped with hydraulic lock, which can ensure safety even in case of rupture of high-pressure rubber hose. The overwinding alarm switch is installed under the top of the boom, when the lifting hook has danger of overwinding, the over swing switch will start the buzzer to automatically give the alarm signal, thus reminding the operator to take measures to prevent the wire rope from overwinding.