| Material/Grade | S235JRH（1.0039）、S275J0H（1.0149）、S275J2H（1.0138）、S355J0H（1.0547）、S355J2H（1.0576）、S355K2H(1.0512)、S275NH（1.0493）、S275NLH（1.0497）、S355NH（1.0539）、S355NLH（1.0549）、S420NH（1.8750）、S420NLH（1.8751)、S460NH（1.8953）、S460NLH（1.8956） |
| Standard | AISI,ASTM, EN, BS, GB, DIN, JIS |
| Specification | b=10mm - 80mm |
| a=5mm - 25mm |
| h=15mm - 350mm |
| t=0.3mm - 10mm |
| Length | 1-12m, Fixed length, random length or as required |
| Surface finished | ,coated,Black or as your requirement |
| Application | Foodstuff, gas, metallurgy, biology, electron, chemical, petroleum, boilers, nuclear, energy, construction field, ships building industry, war and electricity industry, boiler heat exchange, machine and hardware fields and medical equipment, fertilizer, etc. |
| Grade | C | Si | Mn | P | S | Cu |
| A36 | ≤0.25 | ≤0.40 | ≤0.80-1.20 | ≤0.04 | ≤0.05 | ≤0.20 |
| Specifications | Height | Wide legs | Thick waist | Cross section area of(cm squared) | Richard heavy |
| 5# | 50 | 37 | 4.5 | 6.928 | 5.438 |
| 6.3# | 63 | 40 | 4.8 | 8.451 | 6.634 |
| 6.5# | 65 | 40 | 4.3 |
| 6.709 |
| 8# | 80 | 43 | 5 | 10.248 | 8.045 |
| 10# | 100 | 48 | 5.3 | 12.748 | 10.007 |
| 12# | 120 | 53 | 5.5 |
| 12.059 |
| 12.6 | 126 | 53 | 5.5 | 15.692 | 12.319 |
| 14#a | 140 | 58 | 6 | 18.516 | 14.535 |
| 14#b | 140 | 60 | 8 | 21.316 | 16.733 |
| 16#a | 160 | 63 | 6.5 | 21.962 | 17.24 |
| 16#b | 160 | 65 | 8.5 | 25.162 | 19.752 |
| 18#a | 180 | 68 | 7 | 25.699 | 20.174 |
| 18#b | 180 | 70 | 9 | 29.299 | 23 |
| 20#a | 200 | 73 | 7 | 28.837 | 22.637 |
| 20#b | 200 | 75 | 9 | 32.837 | 25.777 |
| 22#a | 220 | 77 | 7 | 31.846 | 24.999 |
| 22#b | 220 | 79 | 9 | 36.246 | 28.453 |
| 25#a | 250 | 78 | 7 | 34.917 | 27.41 |
| 25#b | 250 | 80 | 9 | 39.917 | 31.335 |
| 25#c | 250 | 82 | 11 | 44.917 | 35.26 |
| 28#a | 280 | 82 | 7.5 | 40.034 | 31.427 |
| 28#b | 280 | 84 | 9.5 | 45.634 | 35.832 |
| 28#c | 280 | 86 | 11.5 | 51.234 | 40.219 |
| 30#a | 300 | 85 | 7.5 |
| 34.463 |
| 30#b | 300 | 87 | 9.5 |
| 39.173 |
| 30#c | 300 | 89 | 11.5 |
| 43.883 |
| 32#a | 320 | 88 | 8 | 48.513 | 38.083 |
| 32#b | 320 | 90 | 10 | 54.913 | 43.107 |
| 32#c | 320 | 92 | 12 | 61.313 | 48.131 |
| 36#a | 360 | 96 | 9 | 60.91 | 47.814 |
| 36#b | 360 | 98 | 11 | 68.11 | 53.466 |
| 36#c | 360 | 100 | 13 | 75.31 | 59.118 |
| 40#a | 400 | 100 | 10.5 | 75.068 | 58.928 |
| 40#b | 400 | 102 | 12.5 | 83.068 | 65.208 |
| 40#c | 400 | 104 | 14.5 | 91.068 | 71.488 |
Allowable deviation (mm)
Height H ±1.5 ±2.0 ±2.0 ±3.0 ±3.0
Leg width B ±1.5 ±2.0 ±2.5 ±3.0 ±3.5
Waist thickness D ±0.4 ±0.5 ±0.6 ±0.7 ±0.8
Bending deflection should not exceed 0.15D
Usually the length is 5 ~ 12m 5 ~ 19m 6 ~ 19m
