Bolt Ningbo Reaches Machinery Trade Co., Ltd. Base Info Material:High Strength SteelType:Hexagon HeadConnection:Common BoltHead Style:HexagonalStandard:DINGrade:10.9Application:MachineryFinish:Black Description Pre:Hwf Unt Next:P355qh En10273 Carbon Steel Forged Disc Pressure Vessel Blank Flange