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A36 is a low-carbon steel containing trace amounts of manganese, phosphorus, sulfur, silicon and other elements such as copper. A36 has good weldability and high yield strength, and is the most specified structural steel plate by engineers. ASTM A36 is most commonly manufactured as a variety of structural steel parts. This grade is used for welded, bolted or riveted construction of bridges and buildings, as well as for general structural purposes. Due to its lowest yield point, A36 can be used to design lighter-weight structures and equipment, and provide good weldability.
Epoxy resin coated steel bar is an epoxy resin protective coating prepared on the surface of ordinary steel bar by electrostatic spraying powder high temperature sintering process. The coating has excellent chemical corrosion resistance and does not react with acid and alkali. And the coating has anti-permeability, so it can delay the corrosion medium (such as water, oxygen, chloride, etc.) contact with the steel, so that its corrosion resistance life is greatly extended.
China's epoxy coated steel bars adopt national standards GB/T 25826-2010 and Ministry of Housing and Construction standard JG/T 502-2016 (replacing JG 3042-1997). American standards are ASTM A775/A775M and ASTM A934/A934M, and British standard is BS ISO 14654.
China's steel bar grade according to the requirements of the Chinese standard GB1499.2-2018. According to the production process, there are hot rolled steel bars (H) and cold rolled steel bars (C). Hot-rolled steel bars are divided into smooth round steel bars (HPB300) and ribbed steel bars. The common brands of hot rolled ribbed steel bars are HRB400, HRBF400, HRB400E, HRBF400E, HRB500, HRBF500, HRB500E and HRB600.
BS4449 Steel Reinforcement Rebar
The differences between the, B and C designations are complex and related to structural tolerances. For steel mesh products, B500A grade steel is usually used, and for steel bars, B500B grade steel is used. B500C steel is rarely required, and it is always worthwhile for structural engineers to check whether B500B grade steel can be used instead of B500C, because B500C usually has a significant cost overhead.
ASTM A615 Reinforcing Bar Grade 60
Unlike the former two kinds, ASTM A615 is a deformed steel standard categorized under American standards. These are generally available in diameter between 9.5 mm and 43 mm, and length between 6 m and 12 m. Generally, the steel bars that fall under this standard are under deformed or plain carbon steel. The grades that fall within this standard are Grade 40, Grade 60, Grade 75, and Grade 80.
ASTM A615 Concrete Rebar Grade 40
A615 grade 40 steel adds the most benefit when building materials must hold concrete in compression. Strength is one of the differentiators for these two rebar grades. The minimum tensile strength for A615 grade 40 steel is 70.05 ksi. It has a minimum yield strength of 40 ksi.
ASTM A615 Reinforcement Bar Grade 75
Unlike the former two kinds, ASTM A615 is a deformed steel standard categorized under American standards. These are generally available in diameter between 9.5 mm and 43 mm, and length between 6 m and 12 m. Generally, the steel bars that fall under this standard are under deformed or plain carbon steel. The grades that fall within this standard are Grade 40, Grade 60, Grade 75, and Grade 80.
TMT means Thermo Mechanical Treatment, which is a thermomechanical process; These TMT steel bars are generally used material in construction for enhanced protection against earthquake and another type of natural disasters. To ensure safety for your structure TMT steel bars should be resistant to corrosion which helps to obtain a longer life to your structure.
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