麻花豆星空天美糖心mv-星麻花传媒mv-星空天美梦幻mv免费-天美麻花星空果冻mv-62星空天美梦幻糖心mv-天美电影免费在线观看The metal surface treatment indicated in bold type can be omitted in the identification

The main uses of bolts are introduced in detail. The key points of semicircular head bolts are used in riveting places with large load of aluminum iron rivets. Because of its thick head and corrosion resistance, the flat cone head bolt is often used in riveting places with obvious erosion such as ship hull, water storage tank of heating furnace, etc.

Countersunk head bolt and 1200 countersunk head bolt are mainly used for riveting places with smooth surface and small load.

Semi countersunk head and 1200 half countersunk head bolts are used for riveting places where the surface must be smooth and the load is not large. Small flat head bolts are used for riveting with general load.

麻花豆星空天美糖心mv-星麻花传媒mv-星空天美梦幻mv免费-天美麻花星空果冻mv-62星空天美梦幻糖心mv-天美电影免费在线观看Flat head and flat round head bolts are mainly used for riveting places of non-metallic materials such as metal plates or leather products, white canvas, wood and so on.

麻花豆星空天美糖心mv-星麻花传媒mv-星空天美梦幻mv免费-天美麻花星空果冻mv-62星空天美梦幻糖心mv-天美电影免费在线观看Large flat head bolt is used for riveting place of non-metallic material.

Half space central bolt is used for riveting place with small load. For the selection of the head shape of the double drum rivet manufacturer, please refer to the

Detailed introduction of solid core bolt.

The key point of headless bolt is the riveting place of non-metallic material.