With the production license issued by China, the hot rolled Reinforced Bar for reinforced concrete of QIS Brand is produced under the standard of National Compulsory Standard GB1499 and the strict internal standard of QIS. The diameters of the grade HRB335,HRB400(HRB335 is usually called Grade II rebar, HRB400 is called Grade III rebar) are φ6mm～φ32mm, among which, the coil weight for Grade III Reinforced Bar of φ6mm～φ10mm is 1～2tons, and the cutting length for the reinforced bar of φ12mm～φ32mm is 6mm～12mm.
Hot Rolled Reinforced Bar with Rib for Reinforced Concrete
| Grade | Steel Grade | Diameter(mm) | Standard | Application | Status on Delivery | Remarks |
| HRB335 | 20MnSi | ∮6、∮8
∮10 |
GB1499.2-2007 | For reinforced concrete structure | Hot rolled coil | Produced by the High Speed Rolling Mill |
| ∮10、∮12
∮14、∮16 ∮18、∮20 ∮22、∮25、∮28、∮32 |
Hot rolled bar, Length 9m,12m | Produced by the Bar Rolling Mill | ||||
| HRB400 | 20MnSi
20MnSiNb 20MnSiV |
∮6、∮8
∮10、∮12 |
Hot rolled coil | Produced by the High Speed Rolling Mill | ||
| ∮12、∮14
∮16、∮18 ∮20、∮22 ∮25、∮28、∮32 |
Hot rolled bar, Length 9m,12m | Produced by the Bar Rolling Mill |
| Reinforced Bar Grade | Chemical Contents % | |||||
| C | Si | Mn | P | S | Ceq | |
| HRB335 | ≤0.25 | ≤0.80 | ≤1.60 | ≤0.045 | ≤0.045 | ≤0.52 |
| HRB400 | ≤0.25 | ≤0.80 | ≤1.60 | ≤0.045 | ≤0.045 | ≤0.54 |
Mechanical Performance
| Reinforced Bar Grade | Nominal Diameter mm | Yielding Point（σs）MPa | Tensile Strength（σb）MPa | Percent Elongation （δ5） % | Cold Bending
180° d=Bending Diameter a=Nominal Diameter of the Reinforced Bar |
| No Less Than | |||||
| HRB335 | 6 ~ 40 | 335 | 490 | 16 | d=3a |
| HRB400 | 6 ~ 40 | 400 | 570 | 14 | d=4a |
With the production license issued by China, the hot rolled Reinforced Bar for reinforced concrete of QIS Brand is produced under the standard of National Compulsory Standard GB1499 and the strict internal standard of QIS. The diameters of the grade HRB335,HRB400(HRB335 is usually called Grade II rebar, HRB400 is called Grade III rebar) are φ6mm～φ32mm, among which, the coil weight for Grade III Reinforced Bar of φ6mm～φ10mm is 1～2tons, and the cutting length for the reinforced bar of φ12mm～φ32mm is 6mm～12mm. With the annual production of more than 500,000 tons, the products are sold to the domestic market and the market abroad as well. In 2002, it won the title of product exempted from inspection of China, it won “Golden Cup Prize” of metallurgical Product Quality in 2003, and it was awarded with the title of “No.1 Brand of the Customer Satisfactory for Product Quality in Chinese Iron and Steel Market” in 2004 by the Market Information Centre of China Daily Press.
With the advantages of stable chemical contents, excellent mechanical and process performances, good surface quality, the hot rolled reinforced bar produced by QIS is popular to customers and was used by many important construction project in China.