A bolt is a screw with a larger diameter or without a head, such as a stud. Generally, it is not called "stud" but "stud". The most common form of a double-ended stud is threaded at both ends with a smooth rod in the middle. Most typical use: anchor bolt, or similar anchor bolt, thick connection, when ordinary bolt cannot be achieved.

A fixed link function used to connect machinery. Studs are threaded at both ends and the middle screw, either thick or thin. Generally used in mining machinery, Bridges, automobiles, motorcycles, boiler steel structure, pylon, large span steel structure and large buildings.

Generally, stud bolts need to undergo surface treatment. There are many kinds of surface treatment for bolts. Generally, electroplating and blackened electroplating fasteners account for a large proportion in the actual use of fasteners. Especially in automobiles, tractors, home appliances, instruments and meters, aerospace, communications and other industries and fields are more widely used. However, for threaded fasteners, the use of not only requires a certain anti-corrosion ability, but also must ensure the thread interchangeability, here can also be called the screw. In order to meet the requirements of threaded fasteners in the use of "anti-corrosion" and "interchange" dual performance.

The production of stud is required to be fixed with the machine tool processing, of course, in fact, the processing procedure is relatively simple, there are mainly the following procedures: First is the need to pull out, pull material is to use pull machine will distort the material pull straight, after this process to the next working procedure, the procedure is to use cutting machine will pull straight long material according to customer's requirements into the length of the customer needs, this completes the procedure, the third procedure is cut short expected in a thread rolling machine to roll out of thread; Here the ordinary stud is finished, of course, if you need other requirements, there will be other procedures.

Company introduction

Handan changlan Fastener Manufacturing Co., Ltd. was founded in 2015, formerly Yongnian Tiexi Changhe fastener factory (founded in 2009), a large-scale standard fastener manufacturer in Yongnian County. The company is located in the largest standard fastener distribution center of Hebei Yongnian, covering an area of more than 6000 square meters, close to national highway 107 and Beijing Guangzhou railway, with convenient transportation and superior geographical location 。 After years of development, the company now has advanced domestic production equipment for bolts, nuts, double heads, foundation and complete product testing equipment. With an experienced technical research and development team, high-quality management personnel and spacious production environment.