2019-3-4 · Hot rolling is a metalworking process that occurs above the recrystallization temperature of the material. After the grains deform during processing, they recrystallize, which maintains an equiaxed microstructure and prevents the metal from work hardening. The starting material is usually large pieces of metal, like semi-finished casting products, such as slabs, blooms, and billets.
2019-3-4 · History. The use of cold-formed steel members in building construction began in the 1850s in both the United States and Great Britain. In the 1920s and 1930s, acceptance of cold-formed steel as a construction material was still limited because there was no adequate design standard and limited information on material use in building codes.
2013-4-15 · HB Steel is one of the leading distributor & supplier of metal & steel products. We provide sheet metal, galvanized tread plate, steel sheets, galvanized steel sheets, galvanized channels & galvanized coils at affordable prices.
2018-8-7 · These design rules were developed for structures subject to fatigue such as bridges and crane supporting structures, and it is acknowledged that their use for buildings where fatigue plays a minor role is extremely safe-sided.. SCI publication P419 presents modified steel thickness limits which may be used in buildings where fatigue is not a design consideration.
CONSTRUCTION KNOWLEDGE >> METAL >> STRUCTURAL STEEL . 1. Why Use Steel? 2. Do You Want a Brief History of Steel? 3. What Hot Rolled Steel Shapes are Available?
Hot Rolled Square Steel Tube Hot rolled square steel tubing is valued for its overall strength, durability and ability to withstand extreme temperatures, pressures and a wide range of elements.
For tin-plated cold-rolled steel. BP (Black Plate) is made through cold-rolling and heat treatment of HR materials. It is used for tin-plated steel plates.