What types of OSB boards are there? What are the OSB board grades?

2025-11-04

OSB stands for Oriented Strand Board. Note that it uses oriented strands, which is important. Its surface layer of strands is arranged longitudinally, while the core layer is arranged transversely. This three-layer structure, with its alternating longitudinal and transverse arrangement, restructures the wood grain and completely eliminates the influence of internal stress on processing, giving it exceptional workability and moisture resistance.

Thanks to Zhoubao's tireless efforts in explaining things, everyone should now have a general understanding of OSB boards. So, here's the question: did you know that OSB boards are actually a large family?

What types of OSB boards are there?

Due to its health and environmental advantages, OSB (Organic Strand Board) has become one of the most promising engineered wood products, giving it a wide range of applications and development opportunities. my country, referencing the European EN300 standard, classifies OSB into four grades. Let's get to know the members of the OSB family!

01, OSB1

It is a general-purpose non-load-bearing board material, suitable for interior decoration materials and furniture under dry conditions;

02, OSB2

It is a load-bearing plate, suitable for dry conditions;

03, OSB3

It is a load-bearing board material, suitable for humid conditions;

04, OSB4

It is a load-bearing board material, suitable for humid conditions.

Different levels, applications in different fields

Which level is suitable for the renovation industry?

OSB2 is mainly used in buildings, halls, and homes, and is an upgraded replacement for plywood and multi-layer boards.

Which grade is suitable for the furniture industry?

OSB2 is suitable for furniture making due to its reconstituted wood structure, which has load-bearing capacity, dimensional stability, and excellent processing performance.

Which grade is suitable for construction projects?

OSB3 is used for indoor and outdoor structural materials, decorative materials, concrete formwork, etc.

Which grade of flooring is suitable for?

OSB3 engineered wood flooring uses a substrate that replaces MDF, plywood, and multi-layer boards, and features moisture resistance, stable performance, and no deformation.

Five Advantages of OSB Boards


Environmental protection and safety

Made with carefully selected high-quality pine wood and MDI glue, it is environmentally friendly and healthy.

Strong structure

The core of the board is made of multiple layers of oriented strands, eliminating internal stress and eliminating internal joints. Gaps and cracks are minimized, resulting in a uniform overall structure. The addition of a middle plate on both the top and bottom surfaces further enhances the overall strength and provides superior support.

Impact resistance

It exhibits excellent static bending strength and modulus of elasticity, and is resistant to impact.

Not easily deformed

The board has a small density deviation, low moisture absorption rate, and is not easily deformed.

Good nail holding power and easy to process

The board surface and edges have strong screw holding power, making the furniture durable and easy to process, meeting various requirements such as sawing, sanding, drilling, nailing, and filing.

OSB board, as a new type of environmentally friendly building decoration material, is widely used in building structure, interior decoration and design, furniture manufacturing and other fields. It is the undisputed "natural beauty goddess" of the board industry.