Steel reinforcing bar (rod, GOST 5781-82, GOST R 52544-2006) used for reinforcementdiffers by the type of profile:
Depending on the mechanical properties the rebar rod is differentiated into classes: AI (A240), AII (A300), AIII (A400), AIV (A600), AV (A800), AVI (A1000).
The rods of the rebar class:
The index then includes:
“t” - for thermally hardened rebar steel;
“v” - strengthened by drawing.
Periodically profiled reinforcing bar is a circular steel rod two longitudinal and transverse projections ledges.
For each class of the rebar there are specified steel grades:
Thermomechanicaly strengthened rebar steel of the steel grade A400 and A500S is produced by West-Siberian Metallurgical Plant (WSMP) using St3 steel as a base and is a substitute for steel grades 35GS, 25G2S.
Thermally strengthened periodically profiled steel rods of the diameter 6-40mm - the so called “thermic” is used for the construction of strategic reinforced concrete structures, GOST 10884-81. According to the standard this rebar is made out of these types of steel:
In the nomenclature of these classes of rebar the letters correspond to:
“K” - increased resistance to corrosive fracturing under stress.
“S” - weldable
Minimum size of the rebar of any class - 6(mm),
maximum size - 80(mm), all that is below or above these sizes can be made by special order to factories-producers.
The size of the periodically profiled rebar (corrugated) corresponds to the diameter of the plain rod (excluding the protrusions from corrugation).
|Name||Size||Length||Weight 1 pc/kg|
|Rebar A-III, GOST 5781||8||6||2.4|
|Rebar A-III, GOST 5781||10||11.7||7.6|
|Rebar A-III, GOST 5781||12||11.7||10.8|
|Rebar A-III, GOST 5781||14||11.7||14.9|
|Rebar A-III, GOST 5781||16||11.7||18.9|
|Rebar A-III, GOST 5781||18||11.7||24.5|
|Rebar A-III, GOST 5781||20||11.7||30|
|Rebar A-III, GOST 5781||22||11.7||35.6|
|Rebar A-III, GOST 5781||25||11.7||46|
|Rebar A-III, GOST 5781||28||11.7||57.64|
|Rebar A-III, GOST 5781||32||11.7||75.3|