Z Purlin Weight Chart

Looking to use Z-section steel for your next construction project?

You’ll want to check out our Z Purlin Weight Calculator! This handy tool provides the unit weight for a variety of Z-section steel models, ranging from Z80×40×2.5 to Z250×75×25×4.0.

But that’s not all – our article also delves into the many applications of Z-section steel, from building doors and windows to power transmission towers and solar energy supports. With a thickness range of 1.6 to 3.0 mm and a section height range of 120 to 350 mm, Z-section steel can be customized to meet your specific needs.

Its high compressive strength also makes it a popular choice for large steel structure plants and municipal construction projects.

Whether you’re a seasoned steel structure pro or just getting started, our article is a must-read for anyone looking to make the most of this versatile material.

So, let us help you streamline your Z-section steel calculations and discover the benefits of this reliable material today!

What Is Z-section Steel?

Z-section steel is a widely used type of cold-formed, thin-walled section steel, with a thickness ranging from 1.6 to 3.0 mm and a section height of 120 to 350 mm.

It is manufactured from hot-rolled (painted) and galvanized materials and is frequently employed in large steel structure plants.

The processing length and holes can be customized to meet specific requirements.

Main uses of Z-section steel:

The Z-shaped steel that is cold-formed is popularly used for a wide range of applications due to its high compressive strength and adjustable specifications and sizes.

It is a preferred choice in various areas, including automobiles, railway vehicles, building doors and windows, transportation, shelves, electrical cabinets, highway guardrails, building steel structures, containers, steel templates and scaffolds, solar energy supports, shipbuilding, bridges, power transmission towers, steel sheet piles, cable trays, agriculture, furniture, storage, guide rails, keel steel, pipeline support for vegetable greenhouses, and in various municipal construction projects.

Z Purlin Weight Calculator

Z Purlin Weight Chart

1Cold Bend Z Section SteelZ80×40×2.5kg/m2.947
2Cold Bend Z Section SteelZ80×40×3.0kg/m3.491
3Cold Bend Z Section SteelZ100×50×2.5kg/m3.732
4Cold Bend Z Section SteelZ100×50×3.0kg/m4.432
5Cold Bend Z Purlin SteelZ100×40×20×2.0kg/m3.208
6Cold Bend Z Purlin SteelZ100×40×20×2.5kg/m3.932
7Cold Bend Z Purlin SteelZ120×50×20×2.0kg/m3.835
8Cold Bend Z Purlin SteelZ120×50×20×2.5kg/m4.718
9Cold Bend Z Purlin SteelZ120×50×20×3.0kg/m5.569
10Cold Bend Z Purlin SteelZ140×50×20×2.5kg/m5.11
11Cold Bend Z Purlin SteelZ140×50×20×3.0kg/m6.04
12Cold Bend Z Purlin SteelZ160×60×20×2.5kg/m5.895
13Cold Bend Z Purlin SteelZ160×60×20×3.0kg/m6.982
14Cold Bend Z Purlin SteelZ160×70×20×2.5kg/m6.288
15Cold Bend Z Purlin SteelZ160×70×20×3.0kg/m7.453
16Cold Bend Z Purlin SteelZ180×70×20×2.5kg/m6.679
17Cold Bend Z Purlin SteelZ180×70×20×3.0kg/m7.924
18Cold Bend Z Purlin SteelZ200×70×20×2.5kg/m7.073
19Cold Bend Z Purlin SteelZ200×70×20×3.0kg/m8.394
20Cold Bend Z Purlin SteelZ230×75×25×3.0kg/m9.573
21Cold Bend Z Purlin SteelZ230×75×25×4.0kg/m12.51
22Cold Bend Z Purlin SteelZ250×75×25×3.0kg/m10.04
23Cold Bend Z Purlin SteelZ250×75×25×4.0kg/m13.14


  1. How do you calculate the weight of Z purlins?

The weight of a Z purlin can be calculated by multiplying its volume by the density of the material it’s made from (usually steel). First, calculate the volume by multiplying the purlin’s length, width, and thickness. Then, multiply this volume by the density of steel, which is typically around 7,850 kg/m^3. Please note that this will give you the weight in kilograms. If you want the weight in pounds, you’ll need to convert from kilograms to pounds.

  1. What is the difference between Z and C purlins?

The primary difference between Z and C purlins lies in their shape and usage. Z purlins are shaped like the letter ‘Z’, while C purlins resemble the letter ‘C’. Z purlins are often used in simple roof constructions because their shape allows them to span longer distances and carry larger loads than C purlins. C purlins, on the other hand, are typically used in wall applications or in more complex roof structures.

  1. Are Z or C purlins stronger?

Both Z and C purlins have their strengths and are used for different purposes. Z purlins, because of their shape, can span longer distances and are often considered stronger in terms of load-bearing capacity, especially when used in roofing applications. However, C purlins are excellent for shorter spans and are often preferred for wall applications due to their shape and rigidity.

  1. What are Z purlins made of?

Z purlins are typically made of cold-formed steel. This steel is shaped into the ‘Z’ shape during manufacturing, which gives the purlin its name. The steel is often galvanized or coated to provide additional resistance to corrosion, making them suitable for use in a variety of environments.

  1. What is the load on purlins?

The load on purlins is the weight that they are designed to support. This includes the weight of the roofing material, any insulation, and any additional loads, such as snow or maintenance personnel walking on the roof. The specific load a purlin can support will depend on its size, shape, material, and the span between supports. It’s important to correctly calculate these loads to ensure the safety and stability of the structure.

  1. What is the maximum span of Z purlins?

The maximum span of Z purlins can vary depending on their size, thickness, and the load they are designed to support. As a general rule, Z purlins can span distances of up to 12 meters without additional support. However, it’s always recommended to consult with a structural engineer or the purlin manufacturer to determine the safe and appropriate span for a specific application, as factors like load and environmental conditions can significantly influence this.

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