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Rebar is the common name for hot rolled ribbed steel bars. The
grade of ordinary hot-rolled steel bar is composed of HRB and the
minimum yield point of the grade. H, R, and B are the first letters
of the three words Hotrolled, Ribbed, and Bars respectively.
Hot-rolled ribbed steel bars are divided into three grades: Grade
II HRB335 (the old grade is 20MnSi), Grade III HRB400 (the old
grades are 20MnSiV, 20MnSiNb, 20Mnti), and Grade IV HRB500.
The nominal diameter of the rebar is 8-50 mm, and the recommended
diameters are 8, 12, 16, 20, 25, 32, and 40 mm. Steel grades:
20MnSi, 20MnV, 25MnSi, BS20MnSi. Reinforcing bars are mainly
subjected to tensile stress in concrete. Due to the action of ribs,
deformed steel bars have greater bonding ability with concrete, so
they can better withstand the action of external forces. Steel bars
are widely used in various building structures. Especially large,
heavy, light thin-walled and high-rise building structures.
d mm | weight kg/m | 4.25d mm | cm2 | Rebar type/d | |||||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | ||||
10 | 0.616 | 43 | 0.785 | 1.570 | 2.355 | 3.140 | 3.925 | 4.710 | 5.495 | 6.280 | 7.065 | 7.850 | HRB335/10 |
12 | 0.888 | 51 | 1.131 | 2.262 | 3.393 | 4.524 | 5.655 | 6.786 | 7.917 | 9.048 | 10.179 | 11.310 | HRB335/12 |
14 | 1.208 | 60 | 1.539 | 3.078 | 4.617 | 6.156 | 7.695 | 9.234 | 10.773 | 12.312 | 13.851 | 15.390 | HRB335/14 |
16 | 1.578 | 68 | 2.011 | 4.022 | 6.033 | 8.044 | 10.055 | 12.066 | 14.077 | 16.088 | 18.099 | 20.110 | HRB335/16 |
18 | 1.998 | 77 | 2.545 | 5.090 | 7.635 | 10.180 | 12.725 | 15.270 | 17.815 | 20.360 | 22.905 | 25.450 | HRB335/18 |
20 | 2.466 | 85 | 3.142 | 6.284 | 9.426 | 12.568 | 15.710 | 18.852 | 21.994 | 25.136 | 28.278 | 31.420 | HRB335/20 |
22 | 2.984 | 94 | 3.801 | 7.602 | 11.403 | 15.204 | 19.005 | 22.806 | 26.607 | 30.408 | 34.209 | 38.010 | HRB335/22 |
25 | 3.853 | 106 | 4.909 | 9.818 | 14.727 | 19.636 | 24.545 | 29.454 | 34.363 | 39.272 | 44.181 | 49.090 | HRB335/25 |
28 | 4.834 | 119 | 6.158 | 12.316 | 18.474 | 24.632 | 30.790 | 36.948 | 43.106 | 49.264 | 55.422 | 61.580 | HRB335/28 |
32 | 6.313 | 136 | 8.042 | 16.084 | 24.126 | 32.168 | 40.210 | 48.252 | 56.294 | 64.336 | 72.378 | 80.420 | HRB335/32 |
36 | 7.990 | 153 | 10.179 | 20.358 | 30.537 | 40.716 | 50.895 | 61.074 | 71.253 | 81.432 | 91.611 | 101.790 | HRB335/36 |
40 | 9.865 | 170 | 12.566 | 25.132 | 37.698 | 50.264 | 62.830 | 75.396 | 87.962 | 100.528 | 113.094 | 125.660 | HRB335/40 |
45 | 12.485 | 191 | 15.904 | 31.808 | 47.712 | 63.616 | 79.520 | 95.424 | 111.328 | 127.232 | 143.136 | 159.040 | HRB335/45 |
50 | 15.413 | 213 | 19.635 | 39.270 | 58.905 | 78.540 | 98.175 | 117.810 | 137.445 | 157.080 | 176.715 | 196.350 | HRB335/50 |
55 | 18.652 | 234 | 23.758 | 47.516 | 71.274 | 95.032 | 118.790 | 142.548 | 166.306 | 190.064 | 213.822 | 237.580 | HRB335/55 |
60 | 22.192 | 255 | 28.274 | 56.548 | 84.822 | 113.096 | 141.370 | 169.644 | 197.918 | 226.192 | 254.466 | 282.740 | HRB335/60 |
70 | 30.206 | 298 | 38.485 | 76.970 | 115.455 | 153.940 | 192.425 | 230.910 | 269.395 | 307.880 | 346.365 | 384.850 | HRB335/70 |
80 | 39.462 | 340 | 50.265 | 100.530 | 150.795 | 201.060 | 251.325 | 301.590 | 351.855 | 402.120 | 452.385 | 502.650 | HRB335/80 |
90 | 49.942 | 383 | 63.617 | 127.234 | 190.851 | 254.468 | 318.085 | 381.702 | 445.319 | 508.936 | 572.553 | 636.170 | HRB335/90 |
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production standards;
Price advantage: discounts based on real market prices;
Transaction security: There will be no loss of customer funds;
After-sales guarantee: the customer's problem is our problem;
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Shandong Zhengde Metal Manufacturing Co., Ltd. is a production and sales company integrating hot-rolled steel
coils, cold-rolled steel coils, galvanized steel coils,
color-coated steel coils, section steel, steel pipes, steel wires,
metal mesh, stainless steel, aluminum, copper and other metal
products integrated large enterprises. Five production and sales
bases have been formed in Binzhou, Liaocheng, Wuxi, Tianjin, Jinan
and Tai'an, with more than 100 production lines, 4 nationally
recognized laboratories, 2 technical engineering centers, and 5
enterprise technology centers. Products are exported to more than
50 countries and regions such as North America, South America,
Europe, Africa, Oceania, Middle East, and Southeast Asia.