{"0":"Max working dia of ring: 7000 mm Min\/max length of ring: 1500 > 4000 mm Max thickness of ring: 100 mm Max weight of ring: 40 ton 7.85 kg\/m\u00b3 Max clamping force with 4 cilinders: 400 ton","1":"Type\/Model: Welding derrick","2":"Stocknumber...