The shape of the joint Bolts is different from that of the hexagonal bolt.The root of the joint bolts for Railway is semicircular head with two protruding parts inside the round head.Because it is used for the connection and fastening of the rail joint bolts plate,it is called joint bolts.joint bolts is generally used in natural color without surface treatment. joint bolts is distinguished according to the type of rail,because the diameter of the rail is different joint bolts,the length of the joint bolts is not necessarily due to the thickness of the joint bolts,but if the joint bolts is national standard,the length of the joint bolts must also be national standard. The diameters of the joint bolts are:Φ14,ca 16,ca 18,ca 20,ca 22,ca 24.joint bolts material:class 4.8,class 5.6,class 8.8,class 10.9 high strength joint bolts,common joint bolt and high strength insulation joint bolt.Its production process is generally friction press hot pressing molding,there are also cold heading molding. joint bolts use area:mainly used for metallurgy,coking,iron and steel,railway gantry crane and other industries in the laying of the rail joint fastening,sometimes also with hexagonal bolt instead of.
