The riveting bolts were still widely used until the 1950s, but the construction process of the riveting bolts was not only dangerous but also difficult for professional technicians. It also produced noise resistance during construction, and the construction quality was difficult to control due to the strength and clamping efficiency of the riveting bolts.
In recent years, due to the rapid advancement of welding technology and the use of high-strength bolts, the riveting bolts have been completely replaced by high-strength bolts due to their limited limitations.
Bolts are divided into ordinary bolts and high-strength bolts. Common bolts are also called mechanical bolts (common bolts or machine bolts). They are produced according to ASTM A307 and are generally used for lightweight structures and secondary structures that are not related to seismic design. Objects, or temporary fixed use (such as process beams), and should not be used in structures subject to repeated loads, vibrations or fatigue loads.
The bolts can be tightened to the close state during installation. High-strength bolts are used for the main structures. Most designers understand that the price difference between high-strength bolts and ordinary bolts is not large, and there are not many common bolts. Therefore, in order to avoid the mistakes and misuse of the constructor, the overall use is high. Strength bolts.
A325 Heavy Hex Bolts
High Strength Hex Head Bolt Nut, Titanium Plating Bolt Nut, High Strength Hex Head Bolt,Heavy Hex Bolt, Black Oxide Carbon Steel Hex Bolts A325 Heavy Hex Bolts Specifications as per ANSI B18.2.1 Detailed dimensions as below table 3 Size: 3/8×2.1/2 inch Grade ASTM A307 (type A) Material: Carbon Steel Surface: Black Oxide More Options of […]
High Stretch Structure Bolt
High Strength Hex Head Bolt Nut, Titanium Plating Bolt Nut, High Strength Hex Head Bolt,Heavy Hex Bolt High stretch structure bolt 1)Standard: ANSI 2)Grade: 5 , 8 3)Size: 1/4~1-1/2 length:1/2~9 4)Material:carbon steel, alloy steel.(35k,45#,40Cr,35CrMoA,42CrMoA) 5)Process:Cold heading/hot forging 6)Finish:black oxide, zinc plated (white Zinc,blue Zinc,color Zinc,white and blue Zinc,black Zinc),hot dip galvanized, Dacromet etc. 7)Packing:PE bag,carton. […]
Black Oxide Hex Bolt
High Strength Hex Head Bolts, High Strength Hex Head Bolt Nut, Titanium Plating Bolt Nut, High Strength Hex Head Bolt,Heavy Hex Bolt Specifications of Black Oxide Hex Bolt: Available Packing:Bulk in master cartons, then on pallets Certification: ISO, ROHS, SGS Sample:Free Port:Shanghai,Ningbo Black oxide hex bolt Material: Carbon Steel Standard: DIN GB ISO JIS BA […]