What are the requirements for the quality of joint Bolts
2021-11-19
The Joint bolt is mostly used in the rail Joint bar(Fish Plate)connection,playing a fixed role,sometimes can also be replaced by hexagonal bolt.The joint bolt is mainly used in the track laying of metallurgical industry,coking industry and iron and steel industry,and the rail and rail joints are fastened.Fish-tail Bolts are cylindrical threaded fasteners with nuts.A type of fastener consisting of a head and a screw(a cylinder with external threads)that is fitted with a nut for fastening two parts with through-holes. 
When buying Joint Bolts,be sure to pay attention to the quality of joint bolts.No cracks shall be allowed on the surface of thread threads on bolts and nuts of rail joints,no scratches and burrs that hinder the free screwing of the gauge,and no double tooth tips and scratches that hinder the use of the gauge.The integrity of the thread must be ensured.Dents,burrs,floating rust round blunt,flapping edge,burns and oxide skin are not allowed on the surface of bolts and nuts used for rail splints.At the 300 chamfering of nut,no cracks affecting use are allowed.
