Bolt species more trouble, basically can be divided into a fixed type and active type of Chaohu bolt quality, according to the shape can be divided into 7 font, font 9, umbrellas shape. Also known as short bolt anchor bolt, bolt Chaohu, watering it with the base together, to fix the no strong vibration and shock equipment. Events bolt also called long bolt, a removable bolt for fixing work have a strong vibration and shock heavy machinery and equipment. Products Product Information Product ID: umbrellas shaped bolt Nanjing Bandag Standard: GB Material: q235 Usage: mainly for securing construction sites, steel plant, street lights, billboards and large machines that require built-embedded facilities. Process: Cutting drawing, assembling a umbrellas + a washer-bolt nuts +2 umbrellas as a bolt-shaped products offer real shot chart Chaohu bolt, screw shuangxing (online consultation), Chaohu foot By Peter Kennedy bolt Nanjing Building Materials Co., Ltd. Nanjing Kuang Jian Building Materials Co. (www.njwklg.com) is Nanjing, metal building materials leader, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Shuangxing screw in leadership with the staff warmly welcome all inquiries negotiations to create a better future shuangxing screw.