Qinhuangdao Qianren Power Equipment Co., Ltd. is located in the beautiful coastal city of Qinhuangdao, we enjoy a comfortable environment and convenient transportation access.
 
Qinhuangdao Qianren Power Equipment Co., Ltd. is formed by a group of experienced power plant and marine service personnel. Main products are power plant and marine equipments & spares. Through the continued development and expansion of the company,dedicated to strict quality control and thoughtful customer service,our products not only sell well in all cities and provinces around China,but also exported to clients in such countries and regions as Europe, Asia, America and Africa.
 
We are the qualified supplier of following manufacturer:
HARBIN TURBINE COMPANY LIMITED. (HTC)
HARBIN BOILER COMPANY LIMITED
SHANGHAI TURBINE COMPANY, LTD. ( A COMPANY OF SHANGHAI ELECTRIC )
DONGFANG TURBINE CO., LTD. (DEC)
 
We pursue the management tenet of "Quality is superior,Service is supreme,Reputation is first" and welcome new and old customers from all walks of life to contact us for future business relationships and mutual success



Main application

1. It is used for large equipment, which needs to install accessories, such as sight mirror, mechanical sealing seat, speed reducer, etc.At this time, double-headed bolts are used, one end is screwed into the main body, and the other end is fitted with a nut after the attachment is installed. As the attachment is often removed, the thread will be worn or damaged, so it is very convenient to replace the double-headed bolt.
2. Double-headed bolts will be used when the thickness of the connector is very large and the bolt length is very long.
3. It is used for connecting thick plates and places where hexagon bolts are inconvenient to be connected, such as monorail beam suspension parts of concrete roof truss and roof beam.

Locking purposes

In the actual work, the external load, such as vibration, change, material high temperature creep, etc., will reduce the friction force, the positive pressure in the thread pair disappears in a moment, the friction force is zero, thus making the thread connection loose, such as through repeated action, the thread connection will relax and fail.Therefore, it is necessary to prevent loose, or it will affect the normal work and cause accidents.