Hello Pipe Enthusiasts!
In this #SEAPIPipeInsight! article, we will discuss square pipes (RHS/SHS). These pipes are widely used for structural frames, fences, and architectural structures because of their symmetrical shape and ease of assembly. To make project tonnage calculations more accurate, let’s learn how to calculate the weight of square pipes based on their dimensions.
Why Is Pipe Weight Calculated Instead of Weighed?
Square pipes are commonly produced in standard lengths of 6 to 12 meters with varying side dimensions. Weighing them directly is impractical, especially in large quantities. Engineers therefore rely on mathematical formulas that use the side length, width, and wall thickness. This way, the weight per meter can be determined without physically lifting the pipe.
Determining the Dimensions and Thickness of Square Pipes (RHS/SHS)
1. Side length (A) and side width (B)
- Listed in product specifications, for example RHS 40×20, 100×50, or 150×100.
- They can be measured directly using a vernier caliper or steel ruler.
2. Wall thickness (WT)
- Specified in factory catalogs, for example 1.8 mm, 2.0 mm, 3.0 mm, or 5.0 mm.
- It can be measured with a thickness meter for accuracy.
3. Pipe length (L)
- Usually available in standard lengths of 6 or 12 meters
- Can be measured with a tape measure.
Formula for Square Pipe Weight (RHS/SHS)
W = (((2 × (A + B)) / 3.14) - WT) × WT × 0.02466 × L
Explanation:
A = side length (mm)
B = side width (mm)
π = 3.14
DF = density factor of steel (0.02466 metric formula)
WT = wall thickness (mm)
L = pipe length (m)
W = total pipe weight (kg)
Example Calculation of Square Pipe Weight (RHS/SHS)
A = 40 mm, B = 20 mm, WT = 1.8 mm, L = 6 meters
W = (((2 × (40 + 20)) / 3.14) - 1.8) × 1.8 × 0.02466 × 6
W = 9.70 kg
Therefore, the weight of a rectangular steel pipe (RHS) with A = 40 mm, B = 20 mm, WT = 1.8 mm, and L = 6 meters is 9.70 kg.
Conclusion
PT Southeast Asia Pipe Industries (SEAPI) is committed to continuously providing technical insights and education about steel pipes, enabling industry professionals to make better-informed decisions in every project.
