... gantry cranes and all kinds hoist, Crane forging hook for overhead crane, gantry crane, or hoist etc use.1- Capacity ... for more details of your required hook blocks. hookfor crane usecapacity: 1- 250tstrength grade: M, P, S, ... DG34CrNiMo or DG30Cr2Ni2Mo, more than 40t with DG30Cr2Ni2Mo.Model:Single hook: 5t/6t/10t/12t/16t/20t ... 50t/63t/80t/100t/125t/160t/200t/250t.block model: 3.2t/ 5t/10t/16t/20t/25t/ ...