1. Calculate length

The length of metal hoses is usually measured using a ruler or a soft ruler, and attention should be paid to accurate measurement to avoid warping and deformation that may affect the measurement results.

2. Calculate diameter

The diameter of metal hoses is divided into inner diameter and outer diameter, which can usually be measured with a caliper. It is important to measure the diameter at several different positions and take the average value as the diameter of the metal hose.

3. Calculate wall thickness

The thickness of the metal hose wall refers to the average value of the pipe wall thickness, which can be measured using a caliper or micrometer, ensuring measurement accuracy and precision.

4. Calculate the cross-sectional area

The calculation formula for the cross-sectional area of a metal hose is: S=π (D-d)/2, where S is the cross-sectional area, D is the outer diameter of the metal hose, and d is the inner diameter of the metal hose.

5. Calculate the weight of the metal hose

The weight of a metal hose is related to factors such as length, diameter, and wall thickness, and can be calculated using a formula. The density reference value of the metal hose is 7.85kg/dm ³， The calculation formula is: W=π (D ²- D ²）× L/4 × 7.85, where W is the weight of the metal hose, D is the outer diameter of the metal hose, d is the inner diameter of the metal hose, and L is the length of the metal hose.

6. Calculate the coefficient of expansion

The engineering quantity calculation of metal hoses also needs to consider the possible thermal expansion and contraction deformation that may occur during their operation, and the expansion coefficient is usually used Δ L= α L Δ Calculate with T. Among them, Δ L is the length change of the metal hose, α Is the coefficient of expansion, L is the length of the metal hose, Δ T is the amount of temperature change.