Welding plate anchor bolts, welding anchor screws, pre embedded bolts for bridge construction

Washers are divided into different types according to their structure and application: flat washers - Class C, large washers - Class A and C, extra large washers - Class C, small washers - Class A, flat washers - Class A, flat washers - chamfered washers - Class A, high-strength washers for steel structures, spherical washers, conical washers, square bevel washers for I-beams, square bevel washers for channel steels, standard spring washers, light spring washers, heavy spring washers, internal serrated lock washers, internal serrated lock washers Outer toothed lock washer, outer serrated lock washer, single ear stop washer, double ear stop washer, outer tongue stop washer, and stop washer for round nuts.

A gasket is a component placed between a connector and a nut, usually a flat metal ring. Gasket is used for mechanical seal between two objects, which is usually used to prevent pressure, corrosion between two objects, and pipeline leakage due to natural thermal expansion and contraction. Due to the impossibility of machining the surface, using shims can fill in the irregularity. Gaskets are usually made of sheet materials, such as pad paper, rubber, silicone rubber, metal, cork, felt, Neoprene, rubber, glass fiber or plastic polymer (such as polytetrafluoroethylene). Gaskets for specific applications may contain asbestos. Other uses are as spacers, springs (Belleville washers, wave washers), wear-resistant pads, pre display devices, and locking devices. Rubber gaskets are also used in faucets (valves) to cut off flowing liquids or gases, and rubber or silicone gaskets can also be used to reduce fan vibration. Ordinary gaskets have poor functionality, and they are prone to slipping during nut tightening, resulting in poor tightening effect and poor wear resistance. They have no anti-interference effect when used in electronic components.

Whether stainless steel plate or heat-resistant steel plate, austenitic steel plate has the best comprehensive performance, with sufficient strength, excellent plasticity, and low hardness, which is also one of the reasons why they are widely used. Austenitic stainless steel is similar to most other metal materials in terms of tensile strength, yield strength, and hardness, which increase with the decrease of temperature; Plasticity decreases with decreasing temperature. Its tensile strength increases relatively uniformly within the temperature range of 15-80 ° C. More importantly, as the temperature decreases, the impact toughness of stainless steel screws decreases slowly and there is no brittle transition temperature. So stainless steel can maintain sufficient plasticity and toughness at low temperatures.

A screw is a tool that uses the physical and mathematical principles of the oblique circular rotation and friction of an object to gradually tighten the mechanical components of the object. Due to the different components that need to be fixed, different types of screws are required for different usage scenarios. Push on screw is a new type of fastener applied to thin plates or sheet metal. The principle is to press the embossed teeth into the preset holes of the sheet metal. Generally, the aperture of the preset hole is slightly smaller than the outer diameter of the riveting screw. By pressing the outer diameter of the riveting screw into the plate, plastic deformation occurs around the hole, and the deformed object is squeezed into the guide groove, resulting in a locking effect. However, existing compression screws are prone to loosening due to prolonged use or frequent vibration, which can pose certain risks.