You will need

- Measuring tape

Instruction

1

In the most General case,

d1 = L / N where L is the length of the circumferential section

Thus, D1 is the outer

**the diameter**s**pipe**of wall thickness T can be calculated by measuring the circumference of its cross section. Let this length equal to L. Then, the formula for the circumference of a circle, its**diameter**will be equal tod1 = L / N where L is the length of the circumferential section

**of the pipe**, P = 3,14Thus, D1 is the outer

**diameter**.

2

The length of the inner

d2 = d1 – 2 * T, where T is the wall thickness of the

**diameter**and**pipe**will be equal tod2 = d1 – 2 * T, where T is the wall thickness of the

**pipe**

3

If you have a piece of

d1 = P * h / S where h is a length

d2 = d1 – 2 * T, where T is the wall thickness of the

**pipe**and is known for its length and surface area, the**diameter**s can be calculated using the formula of the area of the cylinder surfaced1 = P * h / S where h is a length

**of pipe**, S is the surface area, P = 3,14d2 = d1 – 2 * T, where T is the wall thickness of the

**pipe**