Supply of high-strength bolts 12.9 Yongnian strength bolts, fasteners Yongnian County Bowen specializes in processing high-strength bolts, we have advanced technology and processing 12.9 high strength bolts, excellent equipment, high-tech assembly line, is a professional high-strength Bolts supplier, reasonable price, complete specifications, allowing you to buy the rest assured useful products. So that the pressing force generated between the connecting member, so that the direction perpendicular to the screw has a great friction, and pre-tension, anti-slip coefficient and steel types have a direct impact on the bearing capacity of high-strength bolts. According to the mechanical characteristics of sub-type pressure and friction type. Difference between the two calculation methods. Supply of high-strength bolts, fasteners Yongnian County Bowen specializes in processing high-strength bolts, we have advanced technology, excellent equipment, high-tech assembly line, is a professional supplier of high-strength bolts 12.9 strength bolts, reasonable price, Complete specifications, allowing you to buy the rest assured useful products. Friction-type high-strength bolts must not slide, do not bear the shear bolts, slip once designed to destroy the state is considered technically more mature; bearing type high strength bolt can slide bolt also under shear, and ultimately destroy the equivalent of ordinary Bolt damage (bad or steel bolts shear crushed). 12.9 high strength bolts factory | 12.9 high strength bolts | Bowen Bowen provided by Yongnian County fasteners. Yongnian County Bowen fasteners (www.bwjgj.com) strong, credible, in Handan fastener industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Bowen fasteners and you hand into the brilliant, for a better future!