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Theoretical weight calculation formula for various steel pipes

general formula for calculating the weight of various steel pipes (materials) =0.25 (outer diameter square - inner diameter Square) l steel specific gravity, where: =3.14l= steel pipe length, the steel specific gravity is 7.8, so the steel pipe weight =0.25 3.14 (outer diameter square - Inner diameter Square) l 7.8* if the dimension unit is m, Then the calculated low-frequency fatigue testing machine works according to the principle of electro-hydraulic servo. The weight result is kg

the density of steel is 7.85g/cm3

theoretical weight calculation of steel

the unit of measurement of theoretical weight calculation of steel is kg (kg). The basic formula is:

w (weight, kg) =f (sectional area mm2) l (length, m) (density, g/cm3) 1/1000

the theoretical weight calculation formula of various steels is as follows:

name (unit)

calculation formula

symbolic meaning

calculation example

round steel wire rod (kg/m)

w=0.006165 d

d= diameter mm

100mm diameter round steel, find the weight per M. Weight per M =0.006165 1002=61.65kg

deformed steel bar (kg/m)

w=0.00617 d

d= section diameter mm

calculate the weight per m of deformed steel bar with section diameter of 12mm. Weight per M =0.00617 122=0.89kg

square steel (kg/m)

w=0.00785 a

a= square steel with side width of mm

20mm, calculate the weight per M. Weight per M =0.00785 202=3.14kg

flat steel

(kg/m)

w=0.00785 B d

b= side width mm

d= thickness mm

side width 40mm, thickness 5mm flat steel, calculate the weight per M. Weight per M =0.00785405=1.57kg

hexagonal angle steel

(kg/m)

w=0.006798 s

s= opposite side distance mm

weight per m for hexagonal angle steel with opposite side distance 50mm. Weight per M =0.006798502=17kg

octagonal steel

(kg/m)

w=0.0065 s

s= opposite side distance mm

calculate the weight per m of octagonal steel with opposite side distance of 80mm. Weight per M =0.0065802=41.62kg

equilateral angle steel

(kg/m)

=0.00785 [d (2B d) +0.215 (R2 2r2)]

b= side width

d= side thickness

r= inner arc radius

r= end arc radius

calculate the weight per m of 20mm 4mm equilateral angle steel, which may take quite a long time to completely degrade B. According to the metallurgical product catalogue, the R of 4mm 20mm equilateral angle steel is 3.5 and R is 1.2, then the weight per M =0.00785 [4 (2204) +0.215 (3.5221.22)] =1.15kg

unequal angle steel

(kg/m)

w=0.00785 [d (b+b d) + 0.215 (R2 2r2)]

b= long side width

b= short side width

.d= edge thickness

r= inner arc radius

r= end arc radius

calculate the weight per m of 30mm 20mm 4mm unequal angle steel. According to the metallurgical product catalogue, R of 30204 unequal angle steel is 3.5, R is 1.2, then weight per M =0.00785 [4 (30+204) +0.215 (3.5221.22)] =1.46kg

channel steel

(kg/m)

w=0.00785 [hd+2t (b d) + 0.349 (R2 R2)]

h= height

b= leg length

d= waist thickness

t= average leg thickness

r= inner arc radius

r= end arc radius

calculate the weight per m of 80mm 43mm 5mm channel steel. According to the metallurgical product catalogue, the channel steel t is 8, R is 8, R is 4, then the weight per M =0.00785 [805+28 (435) +0.349 (8242)] =8.04kg

I-beam (kg/m)

w=0.00785 [hd+2t (b d) +0.615 (R2 R2)]

h= height

b= leg length

d= waist thickness

t= average leg thickness

r= inner arc radius

r= end arc radius

calculate the weight per m of 250mm 118mm 10mm I-beam. It is found from the metal materials manual that the I-beam t is 13, R is 10, R is 5, of which 55 invention patents weigh per m, laying the foundation for Zhongwang to enter the aircraft manufacturing field; 2015 =0.00785 [250 10+2 13 (118 10) +0.615 (10252)] =42.03kg

steel plate (kg/m2)

w=7.85 d

d= steel plate with a thickness of

4mm, calculate the weight per m2. Weight per m2 =7.85 4=31.4kg

steel pipe (including seamless steel pipe and welded steel pipe (kg/m)

w=0.02466 s (d s)

d= outer diameter

s= wall thickness

calculate the weight per m for seamless steel pipe with outer diameter of 60mm and wall thickness of 4mm. Weight per M =0.024664 (604) =5.52kg

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