East Wing Xiang brand high strength U type bolt material mainly made of special steel. If precision forging forming, large-scale computer monitoring continuous carburizing hardened net belt furnace processing, mechanical properties of grade 10.9 and 12.9, tensile load is more than or equal to 346000N. Minimum tensile strength is more than or equal to 1040Mpa, appearance can choose blue, phosphorus, zinc, electrophoresis, spraying, Dacromet, processing is beautiful and durable.