What Is Light Steel Keel? An Analysis of Common Specifications and Sizes

Light steel keel is a metal framing system widely used in modern construction, mainly for ceiling systems and partition wall systems. It serves as a supporting structure to fix panels and ensure overall stability. Thanks to its light weight, high strength, and easy installation, light steel keel has gradually replaced traditional wooden keels and become a mainstream material for interior decoration and engineering projects.

1. What Is a Light Steel Keel?

Light steel keels are usually made from high-quality galvanized steel strips, formed through cold-rolling processes. The galvanized surface provides excellent rust and corrosion resistance, making the system suitable for long-term use.

According to application, light steel keels are mainly divided into ceiling light steel keels and partition wall light steel keels. They are commonly used together with gypsum boards, calcium silicate boards, mineral fiber boards, and fiber cement boards, and are widely applied in residential buildings, offices, shopping malls, hotels, and industrial facilities.

2. Main Types of Light Steel Keels

1️⃣ Ceiling Light Steel Keels

• Main channel

• Furring channel

• Angle bead / perimeter channel

These components are used for suspended ceilings, supporting ceiling panels and maintaining overall flatness.

2️⃣ Partition Wall Light Steel Keels

• Vertical studs

• Top and bottom tracks

They are used for non-load-bearing interior partition walls, offering good stability, sound insulation, and high installation efficiency.

3. Common Specifications and Sizes of Light Steel Keels

(1) Common Sizes for Ceiling Light Steel Keels

Main Channel

• Width: 38 mm / 50 mm / 60 mm

• Height: 10 mm–15 mm

• Standard length: 3 m / 4 m

Furring Channel

• Width: 50 mm

• Height: 19 mm / 24 mm

• Standard length: 3 m

Perimeter Channel

• Sizes: 20 × 20 mm, 25 × 25 mm

• Standard length: 3 m

Thickness Range

• Generally 0.6 mm–1.2 mm

• For engineering or commercial ceilings, 0.8 mm or above is recommended

(2) Common Sizes for Partition Wall Light Steel Keels

Stud

• Width: 50 mm / 75 mm / 100 mm

• Height: 35 mm / 40 mm

• Standard length: 3 m / 4 m

Track

• Width: matched with studs (50 / 75 / 100 mm)

• Height: 35 mm

• Standard length: 3 m

Thickness Range

• Common options: 0.5 mm / 0.6 mm / 0.8 mm / 1.0 mm

4. How to Choose the Right Light Steel Keel Size?

• Standard residential ceilings: 0.6–0.8 mm thickness is sufficient

• Large-area public ceilings: ≥0.8 mm for better load-bearing and stability

• High partition walls: 75 mm or 100 mm studs are recommended

• High sound insulation or fire resistance requirements: use thicker keels combined with double-layer gypsum boards