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# Formula for calculating the weight of stainless steel pipe fittings

## 1. The weight calculation of stainless steel plate

Weight calculation formula for stainless steel plate/stainless steel belt: weight (kg) = length (m) * width (m) * thickness (mm) * density.

• 304, 304L, 305, 321, 201, 202, 301, 302 Density: 7.93
• 316, 316L, 347, 309S, 310S Density: 7.98.
• 405, 410, 420 Density: 7.75
• 409, 430, 434 density: 7.7

## 2. The weight calculation of stainless steel round bar

Formula for calculating the weight of stainless steel round bar: weight (kg) = diameter (mm) * diameter (mm) * length (m) * density.

• Chromium nickel steel density: 0.00623
• Chrome steel density: 0.00609

## 3. The weight calculation of stainless steel hexagonal bars

Weight calculation formula for stainless steel hexagonal rod: weight (kg) = opposite side (mm) * opposite side (mm) * long (m) * 0.0069

## 4. The weight calculation of stainless steel square rod

Calculation formula for the weight of stainless steel square bar: weight (kg) = side width (mm) * side width (mm) * length (m) * 0.00793

## 5. The weight calculation of stainless steel pipe

Weight calculation of stainless steel pipe: weight (kg) = (outer diameter mm – wall thickness mm) * wall thickness mm * 0.02491 * length m,

## 6. Stainless steel and other corner steel (kg / m)

W = 0.00785 × [d (2b – d ) + 0.215 (R2 – 2r 2 )]
b= edge width, d= edge thickness, R= inner arc radius, r= end arc radius

## 7. Stainless steel unequal angle steel (kg / m)

W = 0.00785 × [d (B+b – d ) + 0.215 (R2 – 2 r 2 )]
B = long side width, b = short side width; d = side thickness; R = inner arc radius; r = end arc radius

## 8. Stainless steel channel steel (kg / m)

W=0.00785 ×[hd+2t (b – d )+0.349 (R2 – r 2 )]
h=high; b= leg length; d= waist thickness; t=average leg thickness; R= inner arc radius

## 9. Stainless steel I-beam (kg / m)

W = 0.00785 × [hd+2t (b – d ) + 0.615 (R2 – r 2 )]
h= high, b= leg length, d= waist thickness, t= average leg thickness, R= inner arc radius
r = radius of the end arc;

## 10. The weight calculation of the flange

Formula: [π*(D÷2)2-π*(K÷2)2-nπ*(L÷2)2]*C*ρ
D: outer diameter of the flange;
K: the diameter of the center circle of the bolt hole;
L: bolt hole diameter;
n: the number of bolt holes;
C: flange thickness
ρ: density

## 11. The weight calculation of the flange

Formula: {[(d-D)÷2+L]-T}*T* coefficient
d: the bottom width;
D: top width;
L: length;
T: thickness;
Coefficient: 304 is 0.02491, 316 is 0.02508, Q235 is 0.02466

## 12. The weight calculation of the size of the head

Formula: [(D1+D2)÷2-T]*T*L* coefficient
D1: outer diameter of the big head;
D2: outer diameter of the small head;
T: thickness;
L: length;
Coefficient: 304 is 0.02491, 316 is 0.02508, Q235 is 0.02466

## 13. The weight calculation of the elbow

• 90° elbow: (D-T)*T*(2πR÷4)* coefficient
• 45° elbow: [(D-T)*T*(2πR÷4)* coefficient]÷2
• 180° elbow: [(D-T)*T*(2πR÷4)* coefficient]*2

D: end outer diameter
T: thickness
R: center to end distance;
Source: China Pipe Fittings Manufacturer – Yaang Pipe Industry Co., Limited (www.yaang.com)  