U Bolt, Wood Auger Bit manufacturer / supplier in China, offering Hastelloy G30 Asme B 18.2.1 Half Thread Hex Bolt, Hastelloy G3 N06985 2.4619 Hex Bolt, DIN931 Hastelloy G30 2.4603 Uns N06030 Hex Bolt Nut and Washer and so on.