MS Rectangular Tube Meaning

What is MS rectangular tube?

MS Rectangular Tube refers to Mild Steel rectangular hollow sections. These tubes are made from low-carbon steel, providing strength and versatility at a reasonable cost. Low carbon steel (with less than 0.25% carbon content) does not harden easily, making it highly workable and user-friendly. Because of its low carbon content, mild steel can be easily welded and shaped into various pipe forms and structural sections. Known for their rectangular shape and hollow structure, MS tubes are widely used in construction, engineering, fabrication, and industrial applications.

 

Characteristics of MS Rectangular Pipes

Some of the notable features of mild steel pipes and steel tubes are high tensile strength, these pipes comply with the American Society for Testing and Materials (ASTM) specifications, MS pipes are very strong, low carbon content, can be easily welded, simple to manufacture, easy to work with, not very expensive compared to other metals, and exist for 100 years or more. Some of the major applications of mild steel pipes are structural purposes, mechanical reasons, general construction, residential applications, planning transport bodies, fencing, building structures, and water supply steel pipes.

 

Rectangular mild steel pipes have notable features such as high quality, large consumption barriers, high strength, and easy deformation. Round MS pipes are used in some applications, for example, modern water pipelines, plant access, agribusiness and water supply systems, incentive steel fences, street barriers, stop boundaries, fences, steel doors and windows, roadside railings, foundation and construction works, water supply pipelines, etc.

Rectangular Tube Material:

Rectangular tubes are produced using a variety of metal materials, with the most commonly used being carbon steel. Depending on the carbon content, carbon steel can be categorized into ordinary carbon structural steel and high-quality carbon structural steel. Low carbon steel, a type of ordinary carbon steel, typically contains between 0.05% and 0.25% carbon, offering good weldability and formability. Based on the manufacturing process, rectangular tubes are divided into seamless and welded types. Seamless rectangular tubes are formed without welding, while welded ones are made by joining steel strips. According to their cross-sectional geometry, these tubes are also classified into square tubes and rectangular tubes.

Technical Specifications of MS Rectangular Tube

Specification	Description
Material	Mild Steel (low carbon steel)
Shape	Rectangular hollow section
Wall Thickness	1.2mm – 10mm
Width Range	20mm – 200mm
Height Range	10mm – 150mm
Standard Lengths	6m, 9m, 12m, or customized
Manufacturing Process	Hot-rolled or cold-rolled
Surface Finish	Black, painted, galvanized, or oiled

Key Features of MS Rectangular Tube

Here are the main characteristics that make MS rectangular tubes a reliable choice for a wide range of applications:

1. High-Quality Material

MS rectangular tubes are made from mild steel, a low-carbon steel known for its durability, ductility, and strength. This makes the tubes suitable for both heavy-duty and lightweight structural needs.

2. Rectangular Cross-Section

As the name suggests, these tubes have a rectangular shape. They come in a wide variety of sizes and wall thicknesses to suit different project specifications.

3. Hollow Structure for Weight Efficiency

The tube’s hollow interior reduces weight without compromising strength. This structural efficiency is ideal for large-scale projects where reducing dead load is essential.

4. Economical and Eco-Friendly

Compared to other steel materials, mild steel is more affordable. Its lower carbon content also results in less environmental impact, aligning with sustainable building practices.

5. Excellent Weldability

Mild steel is highly weldable, which simplifies fabrication. This allows engineers and manufacturers to create custom structures, frames, and supports with ease.

6. Impressive Mechanical Properties

MS rectangular tubes offer high plasticity and toughness. They can be formed into various shapes and maintain good strength and hardness even under stress.

Benefits of Using MS Rectangular Tubes

Here are some key reasons to choose MS rectangular tubes:
Lightweight yet durable for easy installation
Resistant to bending and deformation under pressure
Easy to machine and fabricate on-site
Available in custom lengths for project flexibility

Compatible with coatings for enhanced corrosion resistance

MS Rectangular Tube Specifications

Item	Details
Outer Size	20×20 to 50×150 mm
Wall Thickness	1.2 mm to 15.7 mm
Length	Any length up to 16 meters
Standards	GB/T3091-2008, ASTM A53, BS1387, BS EN39, ASTM A500, BS 4568, BS EN31
Chinese Grades	Q215, Q235 (according to GB/T700); Q345 (according to GB/T1591)
International Grades	- ASTM: Grade B, C, D, 50
	- CN: S185, S235JR, S235JO, E335, S355JR, S355J2
	- JIS: SS330, SS400, SPFC590
Applications	Used for transporting water, gas, fluids, flammable liquids, and other media
Structures	Plain ends, beveled ends, threaded with coupling or socket; plastic caps and steel rings available upon request
Surface Treatment	Bare, galvanized, oiled, painted, 3PE coating, or other anti-corrosion finishes
Testing	Chemical composition analysis, mechanical performance tests, dimensional and visual inspection, non-destructive testing (NDT)
Manufacturing Method	Hot-rolled or cold-rolled ERW (Electric Resistance Welded)