---
product_id: 255103213
title: "K I Metals Mild Steel BoxSection -3000MM Length (3M) x 25MM Width x 25MM Height x 3MM Wall Thickness, Durable Square Mild Steel Tubes for Constructions, Residential & DIY Projects"
brand: "kimetals"
price: "€ 248.56"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.hr/products/255103213-k-i-metals-mild-steel-boxsection-3000mm-length-3m-x
store_origin: HR
region: Croatia
---

# 3000mm length for versatile project use Precision-cut 25x25mm dimensions for perfect fit 3mm wall thickness for robust strength K I Metals Mild Steel BoxSection -3000MM Length (3M) x 25MM Width x 25MM Height x 3MM Wall Thickness, Durable Square Mild Steel Tubes for Constructions, Residential & DIY Projects

**Brand:** kimetals
**Price:** € 248.56
**Availability:** ✅ In Stock

## Summary

> 🔧 Elevate Your Build with Steel That Means Business

## Quick Answers

- **What is this?** K I Metals Mild Steel BoxSection -3000MM Length (3M) x 25MM Width x 25MM Height x 3MM Wall Thickness, Durable Square Mild Steel Tubes for Constructions, Residential & DIY Projects by kimetals
- **How much does it cost?** € 248.56 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/255103213-k-i-metals-mild-steel-boxsection-3000mm-length-3m-x)

## Best For

- kimetals enthusiasts

## Why This Product

- Trusted kimetals brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatility Meets Reliability:** 3-meter length and 3mm wall thickness provide the ideal balance for both heavy-duty and DIY applications.
- • **Certified Quality You Can Trust:** UK-manufactured, CE-certified steel delivers peace of mind with every build.
- • **Precision Perfect for Every Project:** Exact 25x25mm square tubing with tight tolerances guarantees seamless welding, cutting, and assembly.
- • **Built to Last, Engineered to Perform:** High-grade mild steel ensures unmatched durability and strength for all your structural needs.
- • **From Fences to Furniture, Own Your Craft:** Perfect for custom metalwork, construction, and creative projects that demand strength and style.

## Overview

K I Metals Mild Steel BoxSection offers a durable, precision-engineered 3-meter long square tube with 25mm width and height and a 3mm thick wall. Made from high-grade, CE-certified UK mild steel, it’s designed for superior weldability and strength, making it ideal for construction, industrial, and DIY projects requiring reliable structural support.

## Description



## Features

- Strong Weldable Mild Steel Tubing for Metalwork and Structures: Made from high-grade mild steel, this square hollow section is designed for maximum strength and durability. Its excellent weldability makes it ideal for metal frames, supports, fencing, and construction projects.
- Versatile Sizes for Every Project Requirement: This mild steel box section is offered in widths ranging from 20mm to 100mm and lengths from 0.5m to 3m, ensuring flexibility to suit all types of construction, industrial, or DIY applications. Perfect for heavy-duty and light-duty projects alike.
- Precision Cut 20mm x 20mm x 2mm Box Section Steel: The steel tubing is precision-engineered with close tolerances to deliver reliable performance in cutting, bending, drilling, and welding tasks. Its exact dimensions ensure ease of use in any structural or creative design.
- Durable UK-Made Steel Certified for Quality and Safety: Manufactured in the UK from premium mild steel, this box section is CE-certified to meet strict industry standards. Its durable mill finish ensures long-lasting use, even in demanding environments.
- Perfect for Custom and Structural Applications: Whether you’re fabricating furniture, building fences, or creating custom metal structures, this square hollow steel tubing offers the perfect combination of strength, flexibility, and reliability for a wide range of uses.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | KIMETALS |
| Brand | KIMETALS |
| Product Dimensions | 300 x 2.5 x 2.5 cm; 5.9 kg |
| Item Weight | 5.9 kg |

## Product Details

- **Brand:** KIMETALS
- **Material:** 25MM W x 25MM H x 3MM T
- **Colour:** Silver
- **Product dimensions:** 25W millimetres
- **Item weight:** 5.9 Kilograms
- **Nominal wall thickness:** 3 mm
- **Outside diameter:** 35.36 Millimetres
- **Item length:** 3000 Millimetres
- **Manufacturer:** KIMETALS

## Images

![K I Metals Mild Steel BoxSection -3000MM Length (3M) x 25MM Width x 25MM Height x 3MM Wall Thickness, Durable Square Mild Steel Tubes for Constructions, Residential & DIY Projects - Image 1](https://m.media-amazon.com/images/I/71ObpD-jgPL.jpg)
![K I Metals Mild Steel BoxSection -3000MM Length (3M) x 25MM Width x 25MM Height x 3MM Wall Thickness, Durable Square Mild Steel Tubes for Constructions, Residential & DIY Projects - Image 2](https://m.media-amazon.com/images/I/81AHXhG33TL.jpg)
![K I Metals Mild Steel BoxSection -3000MM Length (3M) x 25MM Width x 25MM Height x 3MM Wall Thickness, Durable Square Mild Steel Tubes for Constructions, Residential & DIY Projects - Image 3](https://m.media-amazon.com/images/I/81sStQogveL.jpg)
![K I Metals Mild Steel BoxSection -3000MM Length (3M) x 25MM Width x 25MM Height x 3MM Wall Thickness, Durable Square Mild Steel Tubes for Constructions, Residential & DIY Projects - Image 4](https://m.media-amazon.com/images/I/61OOrJWyaXL.jpg)
![K I Metals Mild Steel BoxSection -3000MM Length (3M) x 25MM Width x 25MM Height x 3MM Wall Thickness, Durable Square Mild Steel Tubes for Constructions, Residential & DIY Projects - Image 5](https://m.media-amazon.com/images/I/713czq2HXyL.jpg)

## Available Options

This product comes in different **Size Name, Material Type** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great company
*by D***O on 12 August 2025*

Well packaged, good quality and at a consumer freindly price.Will be keeping the name to pass on and future orders if amd when required.Thanks again

### ⭐⭐⭐⭐⭐ Great quality
*by A***E on 26 March 2025*

Brilliant quality just what I ordered

### ⭐⭐⭐⭐⭐ Did the job well
*by S***R on 11 August 2025*

As expected. Nice to be able to buy a short length which was just enough to do the job without any waste.

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**Shop now:** [https://www.desertcart.hr/products/255103213-k-i-metals-mild-steel-boxsection-3000mm-length-3m-x](https://www.desertcart.hr/products/255103213-k-i-metals-mild-steel-boxsection-3000mm-length-3m-x)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-01-31*