China 10Ton to 90Ton TB-Series SWL Trawl Blocks:Work hardening manganese steel sheaves maximize wire rope and sheave lifeNilagyan ng tapered roller bearings para sa mahabang buhay sa mas mataas na line speed applications.Swivel eyes designed with thrust bearings para sa kadalian ng pag-ikot.Galvanized para sa isang matibay at corrosion resistant finish.