Views: 0 Author: Site Editor Publish Time: 2025-09-01 Origin: Site
Cold galvanizing (electric galvanized) is in the plating bath by current unipolarity zinc plating on metal surface gradually, production speed is slow, uniform coating, the thickness of thin, usually only 3-15 microns, bright appearance, corrosion resistance is poor, usually a few months will rust.
Theoretical Weight Calculation Formula Of Steel
| Name | Formula | Symbol Meaning |
Steel Bar/Wire Rod(kg/m) | W=0.006165*d*d | d=diameter(mm) |
Screw Thread(kg/m) | W=0.00617*d*d | d=section diameter(mm) |
Square Steel (kg/m) | W=0.00785*a*a | a=side width(mm) |
Flat steel (kg/m) | W=0.00785*b*d | d=thickness(mm) b=side width(mm) |
Hexagonal steel(kg/m) | W=0.006798*s*s | s=side distance(mm) |
Octagonal steel(kg/m) | W=0.0065*s*s | s=side distance(mm) |
Equilateral angle steel(kg/m) | W=0.00785*[d(2b-d)+0.215(R*R-2r*r)] | B=width r=???? R=inner semidiameter D=thickness |
Inequilateral angle steel(kg/m) | W=0.00785*[d(B+b-d)+0.215(R*R-2r*r)] | B=long side width B=short side width D=thickness r=???? R=inner semidiameter |
Channel steel(kg/m) | W=0.00785?/SPAN>[hd+2t(b-d)+0.349(R*R-r*r)] | h=height d=thickness b=length of leg R=inner semidiameter T=average thickness of leg |
I-section steel(kg/m) | W=0.00785?SPAN>[hd+2t(b-d)+0.615(R*R-r*r)] | h=height d=thickness b=length R=inner semidiameter t=average thickness of leg |
Steel plate(kg/?) | W=7.85*d | d=thickness |
Steel pipe[including no-seam & welded pipe] (kg/m) | W=0.02466*s(d-s) | d=outer diameters=thickness |
Theoretical Steel Weight Form Pipe: kg/m Panel: kg/m2
| Hot plate | Checker plate | Square steel | I-section steel | Galv. flat steel | Electric wire tube | Galv. angle steel | |||||||
| Spec | Weight | Spec | Weight | Spec | Weight | Spec | Weight | Spec | Weight | Spec | Weight | Spec | Weight |
| 0.5 | 3.925 | 2.5 | 22.6 | 10*10 | 0.785 | 10# | 11.261 | 25*4 | 0.827 | 15 | 0.625 | 40*4 | 2.567 |
| 0.75 | 5.888 | 3 | 26.6 | 12*12 | 1.13 | 12# | 13.98 | 30*3 | 0.753 | 20 | 0.766 | 50*5 | 3.996 |
| 0.8 | 6.28 | 3.5 | 30.5 | 14*14 | 1.54 | 14# | 16.89 | 40*4 | 1.325 | 25 | 1.048 | ||
| 1 | 7.85 | 4 | 34.4 | 16*16 | 2.01 | 16# | 20.516 | 32 | 1.329 | ||||
| 1.2 | 9.42 | 4.5 | 38.3 | 18*18 | 2.54 | 18# | 24.143 | 40 | 1.611 | ||||
| 1.5 | 11.78 | 5 | 42.3 | 20*20 | 3.14 | 20b# | 31.069 | 50 | 2.407 | ||||
| 2 | 15.7 | 6 | 50.1 | 25*25 | 4.91 | 22b# | 36.524 | ||||||
| 2.5 | 19.63 | 8 | 65.8 | 30*30 | 7.06 | 25b# | 42.03 | ||||||
| 3 | 23.55 | 28b# | 47.888 | ||||||||||
| 4 | 31.4 | 30b# | 48.084 | ||||||||||
| 5 | 39.25 | ||||||||||||
| 6 | 47.1 | ||||||||||||
| 8 | 62.8 | ||||||||||||
| 10 | 78.5 | ||||||||||||
| 12 | 94.2 | ||||||||||||
| 14 | 109.9 | ||||||||||||
| Round & Deformed | Channel steel | Welded steel pipe | Galv. pipe | Angle steel | Flat steel | no-seam steel pipe | |||||||
| Spec | Weight | Spec | Weight | Spec | Weight | Spec | Weight | Spec | Weight | Spec | Weight | Spec | Weight |
| 6.5 | 0.26 | 5# | 5.438 | 15 | 1.26 | 15 | 1.33 | 25*25*3 | 1.124 | 3*16 | 0.38 | 25*2.5 | 1.39 |
| 8 | 0.395 | 6.5# | 6.709 | 20 | 1.63 | 20 | 1.73 | 30*30*3 | 1.373 | 4*16 | 0.50 | 32*3 | 2.15 |
| 10 | 0.617 | 8# | 8.045 | 25 | 2.42 | 25 | 2.57 | 40*40*4 | 2.422 | 3*20 | 0.47 | 38*3 | 2.59 |
| 12 | 0.888 | 10# | 10.007 | 32 | 3.13 | 32 | 3.32 | 50*50*5 | 3.77 | 4*20 | 0.63 | 45*4 | 4.04 |
| 14 | 1.21 | 12# | 12.059 | 40 | 3.84 | 40 | 4.07 | 63*63*6 | 5.721 | 4*25 | 0.78 | 51*4 | 4.63 |
| 16 | 1.58 | 14a# | 14.535 | 50 | 4.88 | 50 | 5.17 | 70*70*7 | 7.398 | 3*30 | 0.71 | 57*4 | 5.23 |
| 18 | 2 | 14b# | 16.733 | 65 | 6.64 | 65 | 7.04 | 75*75*8 | 9.03 | 4*40 | 1.26 | 76*4.5 | 7.93 |
| 20 | 2.47 | 16a# | 17.24 | 80 | 8.34 | 80 | 8.84 | 75*50*6 | 5.699 | 6*40 | 1.88 | 89*4.5 | 9.38 |
| 22 | 2.98 | 16# | 19.752 | 100 | 10.85 | 100 | 11.5 | 80*80*8 | 9.658 | 5*50 | 1.96 | 108*4.5 | 11.49 |
| 25 | 3.85 | 18a# | 20.174 | 125 | 15.04 | 125 | 15.94 | 90*90*7 | 9.656 | 8*50 | 3.14 | 127*4.5 | 13.59 |
| 28 | 4.83 | 18# | 23 | 150 | 17.81 | 150 | 18.88 | 90*90*9 | 12.717 | 6*60 | 2.83 | 133*5 | 15.78 |
| 32 | 6.31 | 20a# | 22.637 | 200 | 26.39 | 8*80 | 5.02 | 159*6 | 22.64 | ||||
| 20# | 25.777 | 8*100 | 6.28 | 219*7 | 36.6 | ||||||||
| 22# | 28.453 | 10*100 | 7.85 | 219*8 | 41.65 | ||||||||
| 25b# | 31.335 | 325*10 | 77.68 | ||||||||||
| 28# | 35.823 | 377*12 | 108.02 | ||||||||||
| 30# | 39.173 | ||||||||||||
