What is the weight of Helix PU Hose per unit length?

As a seasoned supplier of Helix PU Hose, I've encountered numerous inquiries regarding the weight of these hoses per unit length. This is a crucial parameter, as it impacts various aspects of the hose's application, including installation, handling, and transportation. In this blog post, I'll delve into the factors influencing the weight of Helix PU Hose, how to calculate it, and its significance in practical use.

Factors Affecting the Weight of Helix PU Hose per Unit Length

The weight of a Helix PU Hose per unit length is not a fixed value; it is influenced by several key factors:

Hose Diameter: Larger diameter hoses generally weigh more per unit length. This is because they require more material to form the tube and helix structure. For instance, a 2 - inch diameter Helix PU Hose will typically weigh more than a 1 - inch diameter one of the same length and wall thickness.
Wall Thickness: A thicker wall means more polyurethane material is used, resulting in a higher weight per unit length. Hoses designed for high - pressure applications often have thicker walls to withstand the stress, and thus they are heavier.
Helix Design: The pitch and thickness of the helix also play a role. A helix with a smaller pitch (more closely spaced coils) or a thicker helix structure will add more weight to the hose. Different helix designs are used for different purposes, such as enhancing flexibility or increasing abrasion resistance.
Material Density: The density of the polyurethane used in the hose affects its weight. Different grades of polyurethane have different densities, and hoses made from high - density polyurethane will be heavier.

Calculating the Weight of Helix PU Hose per Unit Length

To calculate the weight of a Helix PU Hose per unit length, we need to consider the volume of the polyurethane material in the hose and multiply it by the density of the material.

The volume of the hose can be approximated by considering it as a combination of a cylindrical tube and the helix structure. For the tube part, the volume (V_{tube}) of a cylinder is given by the formula (V_{tube}=\pi\times((D/2)^2-(d/2)^2)\times L), where (D) is the outer diameter of the tube, (d) is the inner diameter, and (L) is the length of the hose.

For the helix, we can approximate its volume by considering it as a series of small cylinders. However, this is a more complex calculation and often requires detailed knowledge of the helix geometry.

Once we have the total volume (V) of the polyurethane in the hose, we can calculate the weight (W) using the formula (W = V\times\rho), where (\rho) is the density of the polyurethane.

Let's take a simple example. Suppose we have a Helix PU Hose with an outer diameter (D = 50) mm, an inner diameter (d = 40) mm, and a length (L = 1) m. The density of the polyurethane (\rho=1.2) g/cm³.

First, we calculate the volume of the tube part:
[
\begin{align*}
V_{tube}&=\pi\times((5/2)^2-(4/2)^2)\times100\
&=\pi\times(6.25 - 4)\times100\
&=\pi\times2.25\times100\
& = 225\pi\space cm^{3}\approx706.86\space cm^{3}
\end{align*}
]

If we assume the helix adds an additional 10% to the volume of the tube, the total volume (V = V_{tube}\times1.1=706.86\times1.1 = 777.55\space cm^{3})

The weight (W=V\times\rho=777.55\times1.2 = 933.06) g or approximately (0.93) kg per meter.

Significance of the Weight per Unit Length

The weight of Helix PU Hose per unit length has several practical implications:

Installation: Heavier hoses can be more difficult to install, especially in situations where the hose needs to be lifted or maneuvered into place. This may require additional labor or equipment, increasing the installation cost.
Handling: During day - to - day use, a lighter hose is easier to handle. Workers can move it around more easily, reducing the risk of injury.
Transportation: The weight of the hose affects transportation costs. Heavier hoses require more fuel to transport, and there may be weight limitations on trucks and other transportation vehicles.
Performance: In some applications, such as in mobile equipment, a lighter hose can contribute to better overall performance by reducing the load on the equipment.

Our Helix PU Hose Offerings

At our company, we offer a wide range of Helix PU Hoses with different weights per unit length to meet various customer needs. Our Smooth Bore PU Hose is designed for applications where smooth flow is required. It has a relatively uniform wall thickness, which allows for a more predictable weight per unit length.

Our Translucent Hose is popular for applications where visual inspection of the fluid inside the hose is necessary. The weight of this hose is optimized to balance translucency and durability.

For applications requiring high abrasion resistance, we have Flexible Hoses for Abrasion. These hoses may have a heavier helix structure to enhance their resistance to wear, but we also strive to keep the overall weight per unit length as reasonable as possible.

Contact Us for Your Helix PU Hose Needs

If you're in the market for Helix PU Hoses, understanding the weight per unit length is just one aspect of making the right choice. Our team of experts can help you select the hose that best suits your specific requirements, whether it's based on weight, diameter, pressure rating, or other factors.

We welcome you to contact us to discuss your needs and start a procurement negotiation. We are committed to providing high - quality products at competitive prices and excellent customer service.