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brass tube with pointy spikes

author:MF manufacturerstime:2022-03-17 06:19:28

Rebar Theoretical Weight Table

(brass tube with pointy spikes)angle steel:weight per meter=0.00785*(side width+side width-edge thickness)*edge thickness

round steel:weight per meter=0.00617*diameter*diameter(Rebar and round steel are the same)

(brass tube with pointy spikes)flat steel:weight per meter=0.00785*thickness*side width

pipe:weight per meter=0.02466*wall thickness*(outer diameter-wall thickness)

plate:weight per meter=7.85*thickness*area

brass tube:weight per meter=0.02670*wall thickness*(outer diameter-wall thickness)

Copper tube:weight per meter=0.02796*wall thickness*(outer diameter-wall thickness)

Aluminum checker plate:weight per square meter=2.96*thickness

Specific gravity of non-ferrous metals:copper plate8.9brass plate8.5Zinc plate7.2stereotype11.37

The calculation formula of non-ferrous metal sheet is:weight per square meter=proportion*thickness

How to calculate the weight of various specifications of rebar,Is there a standard?how many?

0.617is round10Rebar weight per meter。Rebar weight and diameter(radius)proportional to the square of。

(brass tube with pointy spikes)G/m=0.617*D*D/100

weight per meter(Kg)=Diameter of rebar(mm)×Diameter of rebar(mm)×0.00617

In fact, it is also very simple to remember the weight of steel bars commonly used in construction projectsφ6=0.222 Kg φ6.5=0.26kg φ8=0.395kg φ10=0.617kg φ12=0.888kg Φ14=1.21kg Φ16=1.58kg Φ18=2.0kg Φ24=2.47kgΦ22=2.98kgΦ25=3.85kgΦ28=4.837kg............

(brass tube with pointy spikes)Φ12(contains12)the following andΦ28(contains28)The steel bars are generally rounded to three digits after the decimal point,Φ14toΦ25Reinforcing bars generally take two digits after the decimal point






(brass tube with pointy spikes)Φ16=1.58Kg







(brass tube with pointy spikes)Φ36=7.99Kg


Simple formula for calculating theoretical weight of steel

(brass tube with pointy spikes)flat steel、steel plate、steel belt W=0.00785×width×thick

square steel W=0.00785×side length2

round steel、wire、steel wire W=0.00617×diameter2

Steel Pipe W=0.02466×wall thickness(outer diameter--wall thickness)

Equilateral angle steel W=0.00785×edge thickness(2side width--edge thickness)

Unequal angle steel W=0.00785×edge thickness(Long side width+Short side width--edge thickness)

I-beam W=0.00785×waist thick[high+f(leg width-waist thick)]

(brass tube with pointy spikes)Channel steel W=0.00785×waist thick[high+e(leg width-waist thick)]

prepare Note

1、angle steel、The exact calculation formula of I-beam and channel steel is very complicated,Tabular form is used to calculate approximate values。

2、fvalue:General model and beltafor3.34,beltbfor2.65,beltcfor2.26。

3、evalue:General model and beltafor3.26,beltbfor2.44,beltcfor2.24。

4、All lengths are in millimeters

Steel length dimension

The steel length dimension is the most basic dimension of all kinds of steel,refers to the length of the steel、width、high、diameter、radius、the inside diameter of、Lengths such as outer diameter and wall thickness。The legal unit of measurement for the length of steel is meters(m)、centimeter(cm)、mm(mm)。in current practice,also useful inches(″)indicated,but it is not a legal unit of measurement。

1.Range of steel

It is an effective measure to save material。The fixed scale is the length or the length times the width is not less than a certain size,or length、Delivery within the size range of length by width。The production unit can produce and supply according to this size requirement。

2.indeterminate length(usual length)

Where product size(length or width),within the scope of the standard,Those that do not require a fixed size are called indeterminate feet。Indefinite length is also called normal length(full length)。Metal materials delivered to length,As long as the delivery is within the specified length。E.g,no greater than25mmof ordinary round steel,Its usual length is specified as4-10m, Then the round steel with the length within this range can be delivered。

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3.Fixed length

Cut to a fixed size according to the order requirements is called a fixed length。When delivered in fixed length,The delivered metal material must have the length specified by the buyer in the order contract。E.g,According to the length of the contract 5m delivery,then the delivered materials must be5mlong,shorter than5mor longer than5mare unqualified。But in reality the delivery can't be all5m long,Therefore, it is stipulated that a positive deviation is allowed,without allowing negative bias。

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4.double ruler

(brass tube with pointy spikes)According to the fixed size required by the order, it is called a double ruler。When delivered in multiple lengths,The length of the delivered metal material must be the length specified by the buyer in the order contract(single ruler)integer multiple of(additional saw)。E.g,The purchaser requires in the order contract the length of a single ruler to be 2m ,So,When cut into double rulers, the length is4m,cut into3When the ruler is doubled, it is6m,and add one or two kerfs respectively。The amount of sawing is specified in the standard。When delivered with a double ruler,Only positive deviations are allowed,Negative bias is not allowed。

5.short ruler

(brass tube with pointy spikes)The length is less than the lower limit of the indeterminate length specified by the standard,But not less than the shortest allowed length is called short ruler。E.g,water、Provisions in the standard for gas transmission steel pipes,Allow each batch to have10%of(Root calculation)2-4mLong short steel pipe。4mThat is, the lower limit of uncertainty length,The maximum length allowed is2m。


The width is less than the standard specified minimum width limit,But not less than the narrowed width of the allowed width。Press narrow foot,Must pay attention to the narrow scale ratio and narrowness of the standard specified。

Steel length size example

1.Length size of type steel

(brass tube with pointy spikes)⑴The standard length of the rail rail has12.5mand25mTwo types。

(brass tube with pointy spikes)⑵Round steel、Wire、Steel wire size is diameter d Millimeter(mm)Number calibration。

⑶Square steel sizeaMillimeter(mm)Number calibration。

(brass tube with pointy spikes)⑷Hexagonal steel、Octagonal steel sizesMillimeter(mm)Number calibration。

⑸The size of the flat steel is in widthbThicknessdMillimeter(mm)Number calibration。

⑹Ingral steel、Slot steel sizeh、Leg widebWaistdMillimeter(mm)Number calibration。

⑺The size of the equipped angle steel is equal to the equal edge widthbAnd edgedMillimeter(mm)Number calibration。The size of inequal angle steel is wideB、bAnd edgedMillimeter(mm)Number calibration。

⑻HType steel size with web heighth、Wing widthbAnd web thicknesst1、Wing thicknesst2Millimeter(mm)Number calibration。

2.Steel plate、Size of steel strip

⑴Generally, the thickness of the steel sheet d Millimeter(mm)Number calibration。And the steel belt is widthbThicknessdMillimeter(mm)Number calibration。

⑵Single steel plate has a specified different sizes,Such as hot rolled steel sheets:1mm Thick steel sheet,Width600×length2000 mm ;650×2000 mm ;700×1420 mm ;750×1500 mm ;900×1800 mm ;1000×2000 mm Wait。

3.Length size of steel pipe

⑴Generally in the outer diameter of the steel pipeD、Inner diameter and wall thicknessSMillimeter(mm)Number calibration。

⑵Each steel pipe has a specified different sizes,Such as seamless steel pipe outer diameter50mmof,Wall thickness2.5-10mmof15kind;Or the same wall thickness5mmof,Outer diameter32-195mmof29kind。Another example is the welded steel pipe25mmWall thickness3.25mmOrdinary steel pipe and4mmThick steel pipe。

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Steel weight

1.Theoretical weight of steel

The theoretical weight of steel is the nominal size and density of steel.(Past called a proportion)The calculated weight is called theoretical weight。This is the length size of steel、The cross-sectional area and dimensions allow the deviations to be directly related。Allowed deviation due to steel in the manufacturing process,Therefore, the theoretical weight calculated by formula has a certain entry into the actual weight.,So just as an estimated reference。

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2.The actual weight of the steel material is the actual weight of the steel.(Overweight)Weight,Actual weight。The actual weight is accurate than the theoretical weight。

3.Steel weight calculation method

⑴Gross weight Yes“net weight”Symmetry,Is the total weight of the total steel itself and packaging materials。Transport enterprises calculate shipping time by gross weight。But steel purchase is calculated according to net weight。

⑵net weight Yes“Gross weight”Symmetry。Steel gross weight reduction weight after weight of the packaging material,Actual weight,Net weight。Generally consolidated in steel purchase and sale。

⑶Felt Steel packaging material weight,Be called skin weight。

⑷Weight ton Power units used in calculating shipping costs by steel gross weight。Its legal metering unit is tonne(1000kg),Long ton(British weight unit1016.16kg)、Short ton(Multi-system weight unit907.18kg)。

⑸Chargeable Weight Also known as“Billing ton”or“Freight ton”。Steel weight of the transportation department charges shipping。Different transportation methods,Different computing standards and methods。Railway vehicle transportation,Generally, the carcoller is refunded as a billing weight.。Highway transportation is charged with the vehicle's load-bearing tonnage。railway、LTL,Then, a few kilograms of gross weight is the weight of the calculation.,Insufficient progress。

Steel theoretical weight calculation

Steel theoretical weight calculated units as kg(kg)。The basic formula is:W(weight,kg) = F(Break areamm2)× L(length,m)×ρ(density,g/cm3)× 1/1000

Steel density is:7.85g/cm3,Various steel theory weight calculation formulas are as follows:

(brass tube with pointy spikes)name(unit)

Calculate formula

Symbolic meaning


Round steel Wire rod(kg/m)



diameter100mmRound steel,Seek everymweight。


(brass tube with pointy spikes)Threaded steel(kg/m)


d=Section diametermm

Section diameter of the section12mmThreaded steel,Seek everymweight。

Everymweight=0.00617 ×12 2=0.89kg



a=Edge widthmm

Edge width20mmSteel,Seek everymweight。


flat steel(kg/m)


b=Edge widthmm


Edge width40mm,thick5mmFlat steel,Seek everymweight。


(brass tube with pointy spikes)Hexagonal steel(kg/m)


s=Edge distancemm

(brass tube with pointy spikes)Edge distance50mmHexagonal steel,Seek everymweight。


Octagonal steel(kg/m)


s=Edge distancemm

(brass tube with pointy spikes)opposite side distance80mm的八角then every,octagonal steelmfrom the catalogue of metallurgical products。

ask for eachmfor=0.0065×802=41.62kg


=0.00785×[d (2b–d)+ 0.215(R2–2r2)]



R=Each equilateral angle steel


weight20mm×4mmEquilateral angle steelmEnd arc radius。

side width4mm×20mm等边角钢的Redge thickness3.5,rfor1.2,Inner arc radiusmbeg=0.00785×[4×(2×20–4)+0.215×(3.52–2×1.2 2 )]=1.15kg

End arc radius(kg/m)

W= 0.00785×[d(B+b–d )+0.215(R2–2r2)]





r=Long side width

(brass tube with pointy spikes)求30mm×20mm×4mmequilateral angle steelhighm重量。

(brass tube with pointy spikes)从冶金产品目录中查出30×20×4不等边角钢的RInner arc radius3.5,rfor1.2,End arc radiusm重量=0.00785×[4×(30+20–4)+0.215×(3.52–2×1.2 2 )]=1.46kg

(brass tube with pointy spikes)槽钢



W=0.00785×[hd+2t(b–d)+0.349(R–r 2)]



(brass tube with pointy spikes)d=腰厚

(brass tube with pointy spikes)t=Unequal angle steel


r=from the catalogue of metallurgical products

求80mm×43mm×5mmShort side widthm重量。

edge thicknesst为8 ,R为8,r为4,

then everym重量=0.00785×[80×5+2×8×(43–5)+0.349×(82–4 2)]=8.04kg


W=0.00785×[hd+2t(b–d )+0.615(R2–r2)]


b=Each unequal angle steel





求250mm×118mm×10mmunequal angle steelm重量。


(brass tube with pointy spikes)则每m重量=0.00785×[250×10+2×13×(118–10)+0.615×(102–5 2)]=42.03kg




(brass tube with pointy spikes)Channel steel 4mm 的钢板,steelm2 重量。

每m2 重量=7.85 ×4=31.4kg

(brass tube with pointy spikes)leg length(包括无缝钢管及焊接钢管)kg/m


D=waist thick


average leg thickness60mm壁厚4mmInner arc radius,求每m重量。


(brass tube with pointy spikes)

来源:of channel steel per