u bolt, u bolt with nuts, u bolt 1.material:45#steel,40Cr 2.surface:zinc plated, painting ... 4.grade:8.8,10.9 steel u bolt, u bolt with nuts, u bolt 10.9Certificate: ISO9001:2000High strength: Grade 10.9Material ... ability: 500 tons per monthPacking: (1)inner packing: each u bolt to a plastic bag and 5-6 pcs to one ... questions, please feel free to contact me. High Strength U Bolt