STKM 11 vs Hollow for Furniture : Choosing the Right Frame Material

In the steel furniture industry, the frame is not merely a supporting component, but the core foundation that determines strength, stability, aesthetics, and product durability. Selecting the wrong frame material can affect production efficiency, cost control, and overall lifespan of furniture used by end costumers. 

Two of the most commonly used materials for furniture frames are STKM 11 pipes and hollow furniture tubes. Although both are made of steel, they have different technical characteristics and functional applications. In the comparison of STKM vs hollow, material selection should be based on design requirements, fabrication methods, and the intended use of the furniture. 

What Is STKM 11 Pipe?

STKM 11 pipe is a low-carbon steel pipe manufactured according to the JIS G 3445 standard, commonly used for light mechanical and precision applications. 

In the STKM 11 furniture industry, this material is widely applied as a round (tubular) frame. Its main advantages include:

• Flexible for bending

The low-carbon steel structure allows STKM 11 pipes to be bent more easily without excessive cracking or deformation.

• Easy to weld

Its material composition supports stable and efficient welding processes.

• Smooth surface

A more uniform surface simplifies finishing processes such as painting and powder coating.

• Lightweight yet strong

The combination of strength and lighter weight makes it ideal for furniture requiring mobility and ergonomic design.

These characteristics make STKM 11 pipes highly suitable for:

• Office and cafe chairs
• Tables with curved legs
• Tubular bed frames
• Modern decorative furniture

For design that emphasize curves and ergonomic comfort, STKM 11 furniture is often the preferred choice. 

What Is Hollow for Furniture

Unlike STKM 11, hollow furniture refers to square or rectangular steel tubes, typically produced according to structural standards such as JIS G 3466.

This material is known for delivering a firm and structurally stable appearance. The advantages of hollow tubes include:

• Stability for angular structures

The square shape provides effective load distribution in linear designs.

• Easier straight connections

Flat surfaces simplify assembly and frame jointing.

• Modern and industrial appearance

Visually, hollow tubes complement minimalist and geometric design concepts. 

However, hollow tubes have more limited bending flexibility compared to STKM 11 pipes, making them less efficient for curve designs.

Hollow tubes are commonly used for:

• Storage racks;
• Steel cabinets;
• Workbenches;
• Retail displays and showcases.

Also Read: Hollow GI SPINDO: Pengertian, Keunggulan, Spesifikasi, dan Contoh Penggunaannya 

Comparison of STKM 11 vs Hollow in the Furniture Industry

From the comparison above, it can be concluded that:

• STKM 11 pipes are superior for flexible and ergonomic designs
• Hollow furniture tubes are superior for rigid structures and angular designs. 

The best choice depends on the product’s function, structural load requirements, and the intended design concept. 

The role of SPINDO Furniture Pipes in the Industry

As a national steel pipe manufacturer, PT STEEL PIPE INDUSTRY OF INDONESIA Tbk (SPINDO) produces both STKM 11 pipes and hollow tubes with consistent quality for the furniture industry. 

The advantages of SPINDO furniture pipes include:

• Precise and consistent dimensions
• Stable production quality control
• Easy fabrication for mass production 
• Trusted by the national furniture industry

Material consistency is crucial in maintaining production standards, especially for industries that rely on volume manufacturing and uniform quality. 

Conclusion


In the comparison of STKM 11 furniture and hollow furniture, neither material is universally superior. Each is designed for different functional requirements.

• STKM 11 pipes are ideal for curved, ergonomic, and round-based frame designs.
• Hollow furniture tubes are better suited for angular structures and strong industrial aesthetics.

With product support from SPINDO, furniture manufacturers have access to high-quality material options to produce strong, aesthetic, and durable furniture.