Seamless Steel Pipe Weight Calculation

Seamless steel pipe (SMLS) weight calculation formula:

The weight of seamless pipe per meter W=0.02466*S(D-S). 
Symbol meaning: D=outer diameter, S=wall thickness.

For example: a seamless pipe with an outer diameter of 60mm and a wall thickness of 4mm, find the weight per meter.
Solution: Weight per meter=0.02466*4*(60-4)=5.52Kg.

The calculation formula of seamless steel pipe theoretical weight seamless steel pipe W=0.0246615(D-S)*SW.

How to calculate the thickness of seamless steel pipe?

Methods for measuring inner and outer thickness:

1. Method for measuring inner thickness: Use an inner diameter micrometer or a contact micrometer to measure the inner diameter of the pipe, calculate the average inner diameter of the pipe according to the measurement results, and then subtract the average inner diameter from the outer diameter of the pipe to get the inner wall thickness of the pipe.

2. Method for measuring outer thickness: Use an outer diameter micrometer to measure the outer diameter of the pipe, calculate the average outer diameter of the pipe according to the measurement results, and then subtract the average inner diameter from the average outer diameter of the pipe to get the outer wall thickness of the pipe.

Formula for calculating pipe thickness:

1. Thickness calculation formula: Pipe thickness = (outer diameter - inner diameter) ÷ 2. This formula is applicable to pipes with the same wall thickness.
2. Formula for calculating the thickness of pipes with different wall thicknesses: Pipe thickness = (outer diameter × wall thickness - inner diameter × wall thickness) ÷ 2. This formula is applicable to pipes with different wall thicknesses.

Notes:
1. When measuring, try to ensure the accuracy of the instrument.
2. The instrument should be calibrated before measurement to ensure the accuracy of the measurement results.
3. During the measurement, avoid using excessive force to avoid damaging the surface of the pipe.
4. After the measurement is completed, the instrument should be cleaned in time to avoid affecting the next measurement.
5. In actual work, it is necessary to consider factors such as the wall thickness and material of the pipe and choose a suitable calculation formula to calculate the thickness of the pipe.

Extended information:

1. The formula for calculating the weight of carbon steel pipes with square and rectangular (rectangular) cross-sections:

The unit of weight per meter: kg/m (kilogram/meter) & lb/ft (lb/ft).
Calculation formula: kg/m = (OC-4WT) * Wt * 0.00785
Among them: OC is the outer circumference, WT is the wall thickness; square: OC=4*a, rectangle: OC=2a+2b. a,b are side lengths.

2. The formula for calculating the weight of a circular cross-section carbon steel pipe:

Calculation formula: kg/m = (OD-WT) * WT * 0.0246615.

Among them: OD is the outer diameter and WT is the wall thickness.

Read more: Steel Pipe Dimensions & Sizes Chart or Schedule 40 Carbon Steel Pipe