Shaogang Iron and Steel Rebar, Guangzhou Iron and Steel Rebar HRBF400E, HPB300, HRB500E

National standard rebar weight table/rebar specification weight table

Rebar information about dry goods.

Rebar is the common name for hot-rolled ribbed steel bars. The grade of ordinary hot-rolled steel bars consists of HRB and the minimum yield point of the grade. H, R, and B are the first letters of the words Hotrolled, Ribbed, and Bars respectively. Hot-rolled ribbed steel bars are divided into three grades: Level 2 HRB335 (the old brand is 20MnSi), Level 3 HRB400 (the old brand is 20MnSiV, 20MnSiNb, 20Mnti), and Level 4 HRB500.

The difference between rebar and plain round steel bars: The difference between rebar and plain round steel bars is that the surface has longitudinal ribs and transverse ribs, usually with two longitudinal ribs and transverse ribs evenly distributed along the length. Rebar is a small steel material, mainly used for the skeleton of reinforced concrete building components. It requires certain mechanical strength, bending deformation performance and process welding performance during use. The raw material billet for the production of rebar is carbon structural steel or low alloy structural steel that has been killed and smelted. The finished steel bar is delivered in a hot-rolled, normalized or hot-rolled state.

GB1499.2-2007 (Steel for reinforced concrete Part 2: Hot-rolled ribbed steel bars)

GB1499.2-2007 / General provisions); GB1499.1~GB1499.3 (reinforced steel bars for concrete); JIS G3112-87 (98) (steel bars for reinforced concrete); JIS G3191-66 (94) (shapes, Dimensions, weight and tolerances); BS4449-97 (hot-rolled steel bars for concrete structures).

1.Mechanical properties

(1) Performance indicators: The inspection items for assessing the mechanical properties of rebar include tensile test (tensile strength, yield strength, elongation) and bending test (primary bending and reverse bending). Specific indicators are listed in Table 6-7-7.

(2) Inspection methods: ① Tensile test method: Commonly used standard inspection methods include GB/T228.1-2010, JISZ2201, JI SZ2241, ASTMA370, ГОСТ1497, BS18, etc.; ② Bending test method: Commonly used standard inspection methods include GB /T232-88, YB/T5126-2003, JISZ2248, ASTME290, ГОСТ1401 9, etc.

3) Bending performance

After bending 180 degrees with the bending center diameter specified in the table, no cracks should occur on the surface of the bent part of the steel bar.

Warehousing some pictures of rebar